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Clients rate Android App developers
Rating is 4.8 out of 5.
4.8/5
based on 598 client reviews
  • $56 hourly
    • 5.0/5
    • (12 jobs)
    Android Experience: o Kotlin and Java o Jetpack Compose, XML, and view binding o Android Studio IDE and Google Play Publishing Console o Firebase libraries: Auth, Realtime Database, FireStore, GeoFire, and Analytics o Google Maps and Location Client Services o Support Library o Consuming Restful APIs using Volley and Retrofit o Permission Requests o Material Design o Proguard o Google Games Services: Sign-In, Achievements, and Leaderboards o Unit Testing o AdMob iOS Experience: o Swift o Map View o Game Center Sign-In, Achievements, and Leaderboards o Eureka o Sticker Packs Tech Experience: o Parsing JSON/XML o MVVM and MVC o Github VCS o CircleCI o Agile Methodologies o TFS/Trello Kanban Boards o Freshdesk o LibGDX Framework o Tiled Level Editor o Davinci Resolve, Adobe Premiere Pro, Adobe Photoshop, and Gimp
    Featured Skill Android App Development
    English
    Email Etiquette
    Technical Support
    Mobile UI Design
    Mobile App Testing
    Swift
    iOS Development
    Java
    Kotlin
  • $45 hourly
    • 4.9/5
    • (13 jobs)
    Personality: Kind ENTJ Mission Leveraging AI to enhance quality of life. Vision Embracing Kaizen for continuous improvement, adhering to best practices, and maintaining a healthy, athletic lifestyle. Prioritizing clean, reliable code through Test-Driven Development and integration testing. Purpose: Establishing a thriving startup focused on AI innovation. Goal: Developing widely-used AI open-source APIs. Technical Profile: Hardware: RTX 4090 MSI GPU, Threadripper CPU, 128GB RAM, 7TB storage. Operating Systems: Ubuntu, Pop_OS (AI development and servers), macOS (Apple native apps), Windows (Windows, Android, SQL Server). Programming Languages & Frameworks: Fluent in Python (PyTorch, NumPy, CUDA), C# (.NET, Azure, Xamarin), HTML/CSS/JS, Docker, Kubernetes, Prometheus. Pipeline Tools: Jenkins, Git Actions, Selenium. Database Management: SQL, MongoDB, PostgreSQL. Mobile App Development: iOS and Android (MVP apps deployed). UI/UX Design: Figma, Bulma CSS, Bootstrap. Analytical Skills: Software: Microsoft Office Suite, Google Analytics, Tableau, Power BI. Languages & Libraries: Python (Pandas, NumPy, Matplotlib), R, D3.js. Visualization Tools: Tableau,Plotly, Bokeh.
    Featured Skill Android App Development
    iOS Development
    UI/UX Prototyping
    Game Audio
    Swift
    Game Art
    Xamarin
    Music Production
    Mobile App Development
    ASP.NET MVC
    C#
    ASP.NET Core
  • $45 hourly
    • 5.0/5
    • (8 jobs)
    Hello, My name is Enrico, an Expert IOS/Android/Web Application developer with 6+ years experience. I work with my small team of 5-6 developers. I follow Agile/Scrum Methodology for the software development cycle, starting from requirements gathering to wireframe the idea, development, release, and maintenance so I am a complete package for developing Mobile & Web Apps. I have been part of many start-ups, enterprise solutions and help them to grow the business. I am dedicated to my work and not only development, but I'll giving you my all expertise and experience to make your product successful. Skills & Technology i am expert in : Native App Development: • IPhone/iPad/iWatch: SWIFT, Objective-C, Cocoa Touch, XCode • Android/Tablet/Watch: Kotlin, Java, Android Studio • AppleTvOS, AndroidTv Cross Platform App Development: • React Native • Flutter Web Application Development: • Front End Development: ReactJS, AngularJS, HTML5, CSS3, Javascript, Bootstrap • Backend Development: NodeJS, PHP, Socket.io • Databases: MongoDB, MySQL, DynamoDB, Postgresql, Google Firebase • Web Services: Restful API with JSON, SOAP/XML Other Services: • Chat & Messaging: Google Firebase, XAMPP, OpenTok, Twilio, Socket.io • Media Streaming: Wowza, AWS CDN, WebRTC • Maps: Google map, Apple Map, OpenStreet, MapBox, GPS Location, Google Place API, Google Distance Calculation • Source Control: Github, BitBucket • Cloud Services: AWS, EC2, Google Cloud, Digital Ocean, Rackspace, Azure • Payment Gateway: Stripe, Braintree, Authorize.Net • PHP Frameworks: Laraval, CakePHP, Codelgniter, Zend, Wordpress, Ecommerce Etc. • Project Management: Trello, Basecamp, Jira Let's get your idea turn into reality ...
    Featured Skill Android App Development
    iOS
    Stripe
    Flutter
    Apple TV Application
    tvOS
    Objective-C
    Swift
    iPadOS
    MongoDB
    PHP
    Kotlin
    React Native
    Node.js
    AngularJS
  • $45 hourly
    • 4.9/5
    • (39 jobs)
    I’m Myro, and I’ve been developing mobile applications for iOS and Android using React Native since 2016. Having worked with React Native from its early days, including extensive experience with Expo. We'll take care of the software while you focus on marketing. 💡 Technologies: Cross-platform mobile development using React Native, Cli or Expo, Web development using Node.js, React.js, Next.js, Nest.js, Fastify, and more, deploying on platforms like AWS, Digital Ocean, Google Cloud, Vercel, etc. 🚀 Industries: Fitness and Wellness, Geolocation, Taxi, Healthcare, Transport, Retail, Asset Management, Real Estate, Dating, Rental, Food Delivery, Fintech, Finance and Banking, Cryptocurrency, Entertainment, Inventory, Hospitality, Meditation, Logistics, Transportation, Manufacturing, Media and Publishing, Productivity, Non-Profit, Sports and Fitness, Travel and Tourism, Utilities, Wellness, Medical Dashboard, Marketplace, Advertising, Automotive, Business Innovations, Lifestyle, Fashion, Marketing, Navigation, Education, E-learning 🛠 Services: Mobile Development, Web Development, Extension Development, UX/UI Design, Business Analytics, Legacy Code Modernization, Consulting, Logo, Branding, Manual Testing, End-to-End Testing, We do a lot of migrations away from technologies such as Laravel and Python 🎨 UX/UI Design: Prototyping: (Figma, Miro, Sketch), Responsive design: Web, Tablet, Mobile, Graphic Design: Illustrations, Animations, Lotties, Rive. 🧑‍💻Highlighted Skills: Mobile App Development, Web App Development, User Interface Design, Payment Integration (Stripe, Paddle, Plaid), Payment Gateway, ERP, CRM, Develop and Maintain, User-friendly Interface. No Laravel, no Python developer, Project Planning, MVC Architecture and RESTful APIs, IOS developer, Android developer, React Native, React, Flutter developer, Front-end Technologies (React.js, Next.js, HTML5, CSS3, JavaScript), Responsive and Mobile-first Design, Database Design and Implementation (MongoDB, Firebase, PostgreSQL), User Authentication and Authorization, Integration of Third-party APIs, Deployment to Cloud Platforms (Heroku, AWS, Digital Ocean, Vercel, Google Cloud), Test-driven Development, Agile Methodologies (Scrum, Kanban), Security Technologies, QR Code Scanner, GPS and Mapping, ChatGPT and Artificial Intelligence, E-commerce Solutions, Chatbots, Version Control Systems (Git, GitHub), Project Management and Collaboration Tools (ClickUp, Jira, Trello), Documentation and Code Commenting, MVP SAAS, Website and Web App from Scratch, Rebuild, Upgrade, Modernize, Prototype, Start-Up, High-Friendly Custom Development, Expert Building, Fix, Proficiency, Optimizing, Transform, Deliver, Solution, Ensure, Create, Enhance, Implement, Great Problem-solving, Excellent Communication, Assist, Collaborate 🐲Talent: Company, Specialist, Proven Track Record, Strong Background, Write Clean Code, Deep Expertise, Bring to Life, Cross-platform, Attention to Detail, Good Knowledge, Talented, Experienced, Skilled, Strong Experience, Proven Experience, Agency, Team. 🔗 Let’s Connect! Click the “Invite to Job” button, and let’s discuss how we can bring your project to life! Check our social media for extra recommendations.
    Featured Skill Android App Development
    Hybrid App Development
    In-App Purchases
    Tablet
    User Authentication
    Flutter
    User Profile Creation
    React Native
    iOS Development
    Mobile App Development
    Smartphone
    Android
    iOS
    React
    JavaScript
  • $90 hourly
    • 4.5/5
    • (12 jobs)
    I am an experienced AI and software development expert with 100% Upwork Job Success and awarded Top-Rated-Plus status. With more than 20 years of professional experience, a Bachelor’s degree in Computer Science, and expertise across AI, machine learning, and multiple technologies, I will deliver your project with speed, precision, and minimal friction. I specialize in creating AI-powered solutions that generate maximum value and streamline complexity across various industries. My work has driven success for industry giants such as JPMorgan Chase, Moen Inc., Nationwide Insurance, and McGraw-Hill, as well as doubled revenue for smaller companies with tailored solutions. AI and Machine Learning Expertise: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ ✅ AI/ML Tools and Frameworks: TensorFlow, PyTorch, Scikit-learn, Keras, OpenAI APIs (ChatGPT, GPT-4), Hugging Face, IBM Watson, Azure Cognitive Services, AWS SageMaker. ✅ NLP and Computer Vision: GPT-based conversational systems, text summarization, sentiment analysis, object detection, facial recognition. ✅ AI-Powered Analytics and Automation: Predictive analytics, anomaly detection, recommendation engines, process automation, RPA (Robotic Process Automation). ✅ Generative AI: Custom-trained language models for content creation, design, and decision-making workflows. ✅ Data Engineering: ETL pipelines, data wrangling, feature engineering, and cloud-based data architectures. General Technology Expertise: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ ✅ Full-Stack Development: MEAN/MERN stacks, modern frameworks (React, Angular, Node.js), serverless architecture. ✅ Cloud Platforms: AWS (Lambda, SageMaker), Azure, GCP. ✅ Data Management: SQL/NoSQL databases (PostgreSQL, MongoDB, DynamoDB), Elasticsearch, Redis. ✅ Frontend Expertise: HTML5, CSS3, Bootstrap, JavaScript, TypeScript. ✅ DevOps & Scalability: CI/CD pipelines, Kubernetes, Docker, automated scaling for high-performance systems. AI-Focused Solutions: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ ✅ Custom AI Models: Delivering tailored AI solutions for process optimization, predictive insights, and customer engagement. ✅ Conversational AI: Advanced chatbots and virtual assistants using OpenAI and NLP frameworks. ✅ Generative Content Systems: AI-driven tools for creating social media posts, reports, or marketing content. ✅ AI-Powered Marketplaces: Smart matching algorithms and personalization for platforms similar to Airbnb, Fiverr, or Uber. ✅ AI for Healthcare: HIPAA-compliant AI solutions for EHR/EMR management, patient data insights, and telemedicine. ✅ Predictive Analytics: Improving operational efficiency and sales through advanced forecasting tools. ✅ RPA (Automation): Automating repetitive tasks to reduce cost and improve accuracy. End-to-End Solution Delivery: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ I offer scalable, AI-driven solutions across diverse domains, such as: ✅ On-Demand Services: AI-enhanced platforms for scheduling, delivery, and freelance marketplaces. ✅ eLearning: AI-powered adaptive learning platforms for students and professionals. ✅ eCommerce Optimization: Personalized shopping experiences and recommendation engines. ✅ Logistics & Fleet Management: AI tools for real-time tracking, route optimization, and predictive maintenance. Why Clients Love Working With Me: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ • Enhanced workflows and business processes. • Scalable, AI-focused solutions tailored to your needs. • New revenue opportunities through innovative automation. • Improved efficiency and competitive advantages. • A money-back guarantee and reduced project friction. By understanding each client’s unique challenges, I define the right AI-driven strategies to transform your business and deliver results. Whether you’re optimizing internal processes, improving customer engagement, or launching AI-first products, I am here to exceed your expectations. Let’s discuss how AI can revolutionize your project. Message me today, and let’s get started on building something incredible! Best, Justin
    Featured Skill Android App Development
    CSS
    WordPress Plugin
    WordPress
    WooCommerce
    OpenCart
    Magento
    React
    PHP
    Python
    Front-End Development
    Angular
    Node.js
  • $75 hourly
    • 5.0/5
    • (43 jobs)
    I have around 20 years software development experience. I worked on a lot of kind of software development. include Web, Mobile(both Android and iOS) and AI development. I worked as freelancer around 15 years. Clients from United States, Europe, China, New Zealand etc. Right now I am living in United States and manage a small team in ChengDu China. We mainly focus on desktop software development, App development and Web application development. As well as AI related development Skills: 1. Programming Languages: Proficient in C#, VB.Net, Java, JavaScript, Swift, Objective-C, and Kotlin. 2. Deep Learning: Experienced in building, fine-tuning, and deploying deep learning models. 3. Backend Development: Skilled in .Net, NodeJS, and Java Spring Boot for developing robust backend systems, including RESTful API integration. 4. Web Development: Expertise in ASP.Net, ASP.Net Core, and front-end frameworks such as React, Vue, Angular, HTML, CSS, and JavaScript. 5. Desktop Applications: Proficient in building desktop applications using WinUI, UWP, WPF, and ElectronJS. 6. Mobile Development: Competent in cross-platform mobile development using React Native, Ionic, and Flutter, with a strong foundation in Android and iOS native development. 7. Database Management: Extensive experience with SQL Server, MySQL, MongoDB, and report services. 8. Architectural Patterns: In-depth knowledge of MVC and MVVM architectural patterns. 9. IoT and Embedded Systems: Expertise in single-board computers (e.g., Nvidia Jetson Nano), IoT, and smart home technologies. 10. Geographic Information Systems (GIS): Skilled in GIS mapping, GPS devices, TCP/IP listeners, and integration with Google Map API and Bing Map API. 11. AI Application Development: Experienced in developing AI applications, including those related to large language models (LLMs) and computer vision (CV). 12. Agile Methodologies: Proficient in Agile methodologies and experienced in team management. 13. CI/CD and Cloud Services: Proficient in Azure CI/CD, AWS, and other cloud services. 14. Swift and Objective-C: Proficient in both Swift and Objective-C programming languages. 15. UIKit and SwiftUI: Skilled in using UIKit for traditional UI development and SwiftUI for declarative UI design. 16. APIs and Networking: Experienced in integrating RESTful APIs, managing network requests, and handling JSON data. 17. App Store Guidelines: Knowledgeable in Apple’s App Store review guidelines, submission processes, and best practices for app distribution. 18. Java and Kotlin: Proficient in both Java and Kotlin for Android development. 19. UI/UX Design: Expertise in UI/UX design principles and practices. 20. Fragments and Activities: Skilled in managing Android lifecycle components such as fragments and activities. 21. SDK Integration: Experienced in integrating various SDKs, including Google Maps iOS SDK and DJI Mobile SDK. 22. Database Technologies: Proficient in using SQLite for local data storage solutions. 23. Version Control: Extensive experience with Git for version control, collaboration, and code management.
    Featured Skill Android App Development
    Startup Company
    jQuery
    Windows Forms
    .NET Framework
    .NET Core
    Management Development
    iOS Development
    React Native
    HTML5
    JavaScript
    C#
    Microsoft SQL Server
  • $60 hourly
    • 5.0/5
    • (17 jobs)
    I’m Adil, based in 𝗩𝗶𝗿𝗴𝗶𝗻𝗶𝗮, and I bring 𝟴 𝘆𝗲𝗮𝗿𝘀 of expertise in 𝗺𝗼𝗯𝗶𝗹𝗲 𝗮𝗽𝗽 𝗱𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁. I specialize in crafting high-performance apps for 𝗶𝗢𝗦, 𝗩𝗶𝘀𝗶𝗼𝗻 𝗣𝗿𝗼, 𝗔𝗻𝗱𝗿𝗼𝗶𝗱, 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲, and 𝗙𝗹𝘂𝘁𝘁𝗲𝗿. Whether you need a native iOS/Android app or a cross-platform solution, I deliver robust, optimized mobile applications designed to enhance performance, user engagement, and business growth. How I Can Help You Succeed: 🔹 iOS & Vision Pro Development: Building sleek, user-friendly native iOS apps and Vision Pro applications with top-tier UI/UX, optimized for Apple devices. 🔹 Android App Development: Expertise in creating feature-rich, secure, and scalable native Android apps using Kotlin and Java. 🔹 Cross-Platform App Development: Proficient in React Native and Flutter, allowing for fast, responsive mobile app development across iOS and Android, reducing development time and costs. 🔹 User-Centric Design: I design intuitive interfaces and smooth user journeys using UI/UX best practices to increase user retention and improve overall app satisfaction. Why Work With Me? 1️⃣ Client-Focused Approach: I prioritize understanding your business needs to deliver custom mobile solutions tailored to your goals. 2️⃣ Collaborative & Efficient: Whether you need to collaborate with a team or work independently, I bring excellent communication and project management skills to keep your mobile app project on track. 3️⃣ Proven Results: I focus on scalable, maintainable mobile app development, ensuring your app meets both immediate requirements and long-term growth potential. 🔗 Let’s Build Your Next Success Story! If you need a mobile app developer who specializes in iOS, Android, Vision Pro, React Native, and Flutter, let’s discuss how I can bring your mobile app vision to life with high-quality, client-centric development.
    Featured Skill Android App Development
    App Development
    Cross-Device Compatibility
    Mobile App Bug Fix
    Native App Development
    AI Mobile App Development
    iOS
    Mobile App
    Flutter
    Android
    Kotlin
    React Native
    Swift
    iOS Development
    Mobile App Development
  • $94 hourly
    • 4.9/5
    • (16 jobs)
    I develop high quality iOS and Android mobile apps using Swift, Kotlin, Java, SwiftUI, Jetpack Compose, Firebase, and APIs as needed depending on project. Through my hard work and dedication to meet all project requirements, I've earned Upwork's Top Rated Plus rating! I am self-motivated, self-directed, dependable, reliable, and trustworthy. I've been an independent consultant for most of my career. I know how to conceive a project, get the work done independently, and successfully deliver the project. I excel at testing so when the project is done, it is done! No one likes to put together a large programming team where there are tons of duplicated effort and miscommunication. I can be your single-source developer for both Android and iOS phones and tablets! Most apps also need a back-end. No need for a separate web app programmer that can cause timeline problems and miscommunication! I can write the back-end utilizing Firebase then integrate it into all versions of your mobile app. Using a single source, you control the timeline, you avoid integration issues, and everything flows smoothly. You probably cut your delivery time in half! Every week, I develop mobile apps, cloud functions, and cloud tasks, mainly for Internet of Things using Bluetooth and Firebase. Every week, I am using: Kotlin Java Javascript, typescript, node.js (back-end) Swift Jetpack Compose SwiftUI Bluetooth (Android) Core Bluetooth (iOS) Firebase Auth (user authentication, login) Firebase Firestore (database) Google Cloud Functions Google Cloud Tasks (scheduled based on a trigger) Firebase Crashlytics Firebase and Apple push notifications Google sign-in Apple sign-in As an expert Mobile App Developer, other skills I can deliver: Flows, co-routines, async tasks, flow state. WiFi configuration: static IP, dns, enterprise, add and update. JSON serialization/parcelization. NFC tag reading. Develop Maven library. Network Service Discovery (NSD). Direct ipp open protocol for printers. REST - okhttp and retrofit expert for network calls, including calls to Amazon AWS. User accounts with encryption tokens. Encrypted keystore. Push notifications (Firebase, Apple, in-app). Silent package Installer and updater. Kiosks management. Google maps with location updates, custom map markers, annotated map markers. Custom User Interface features with custom graphics, backgrounds, themes, and styling. User authentication. Credit card validation. Stripe credit and debit card processing. Google Pay processing. Glide or Picasso image handling/transformation. Image upload as file or bitmap. Dark mode activation. Launch and welcome screens with terms of service. Multi-threaded environment solutions and multi-tasking co-routines. Dynamic updates of screens from incoming push notifications. Phone dial, messaging, camera photo-taking, gallery browsing. Backwards compatibility to older versions of Android. Forwards compatibility to latest versions of Android. Room database. App publishing on Google Play Store and Apple App Store. App testing on Firebase. Firebase/Maps API keys. Troubleshooting and expert debugging of crashes/bugs/memory leaks in legacy apps. Development environment: Gradle multi-flavor (multi-version) builds Github and bitbucket version control Slack or Jira team communication Figma wireframes Swagger REST API calls Github or Jira project management and collaboration Roll-outs to 50 million user install base A recent review on Upwork: "Stephanie did a superb job to make our Bluetooth hardware on-boarding via Android very reliable. She was able to find the corner cases and then find solutions for those corner cases! This was a difficult challenge as Bluetooth permissions, capabilities, and processes vary greatly between Android OS versions and devices. The on-boarding process is simple, elegant, and extremely user friendly. It has been an honor and pleasure working along side Stephanie." Other: Protocol Stacks, embedded systems, multi-tier networking systems Fortune 500 Java and C/C++ Trainer, Expert Witness Computer Science degree, Certified Project Management Professional Native English Speaker Available to work any timezone Background: I've used many protocol stacks: Point-to-point, TCP/IP, sockets, WiFi CDMA network, Bluetooth, other wireless networks. I've developed application systems with 4 tiers of communication layers: Device to Handheld, Handheld to PC, PC to mini-computer, mini-computer to mainframe. Embedded Systems: Transponder readings sent to handheld which then transferred data to desktop computer which interfaced to IBM mainframe. Cable system "set-top" box. Assembly code for micro-chips. Veriphone credit card readers with communication to mainframes/cloud. Java Trainer for Sun Microsystems (before they were bought out by Oracle) for 2 years. C/C++ Trainer for Intel University (part of Intel) for 2 years. Expert Witness in trial against a top insurance provider regarding their Java based application.
    Featured Skill Android App Development
    Software Debugging
    Database
    API Integration
    Java
    Swift
    Push Notifications
    Firebase
    Android
    iOS Development
    Firebase Cloud Firestore
    RESTful API
    Kotlin
    Bluetooth
    JetPack
  • $67 hourly
    • 5.0/5
    • (20 jobs)
    The two-second version: Oracle-trained engineer with 5+ years of software experience, impacting millions of users globally. Built cloud services powering industry giants and praised for top-tier project delivery. Clients say: 'Andrew is an expert of the highest caliber.' Ready to bring Fortune 500 expertise to your next project? Let’s create something extraordinary. -------- The longer, sit-down version: Pleasure to meet you! I'm Andrew. Most clients enjoy working with me because of my cheerful demeanor, prompt communication, and ability to build productive relationships where they feel better off after collaborating with me. I’m passionate about delivering results that exceed expectations while making the experience enjoyable and professional. As a skilled Software Engineer with over 5 years of experience, including a pivotal role at Oracle (Fortune 500), I’ve built scalable solutions that have impacted millions of users globally. I bring a deep understanding of cloud services, web/mobile development, and DevOps, delivering high-impact results. 💡 Key Achievements: •Developed managed cloud services like OpenSearch and Redis at Oracle, powering critical workloads. •Played a key role in building healthcare services (FHIR), delivering in time for audit deadlines, supporting thousands of users. ⭐️ Client Testimonials: • "Andrew is an expert of the highest caliber. He delivered a custom-built webpage that exceeded my expectations." • "Very good communication, delivered on time. It was nice working with him!" 💼 How I Can Elevate Your Project: •Web Development: Expert in JavaScript, React.js, Node.js, Python, and more •Mobile Development: Proficient in Java, Kotlin, Swift, and Flutter •Cloud & DevOps: Extensive experience with AWS, Azure, GCP, and Oracle Cloud •Database Management: Skilled in MySQL, PostgreSQL, MongoDB, and Oracle DB •API Integration: Specialized in RESTful APIs, OpenAI, Stripe, Elasticsearch, and Redis, Rentec, Real Estate Software, Twilio 🌟 Why Choose Me: • Fortune 500 Expertise: Built cloud services used by millions. • Versatile Skill Set: Full-stack development, cloud infrastructure, DevOps, mobile development. •Client-Centric Approach: Focused on clear communication and exceeding client expectations. •Proven Results: Consistently delivered high-quality work on time and within budget. 📩 Let's connect and discuss how I can help turn your ideas into reality. Whether you're a startup looking to launch your first product or an established company seeking to modernize your tech stack, I'm ready to bring my Fortune 500 expertise to your project and create something extraordinary together!
    Featured Skill Android App Development
    Back-End Development
    Full-Stack Development
    Web Application
    Web API
    Database
    iOS Development
    WordPress
    API Integration
    HTML
    Python
    Desktop Application
    Java
    Python Script
    ChatGPT
  • $45 hourly
    • 4.7/5
    • (31 jobs)
    You have a brilliant idea. Maybe it's an innovative app, a sleek website, or a cutting-edge digital product. But finding the right person to bring it to life? That’s the real challenge. You need a designer who understands user behavior and a developer who can turn that vision into a seamless experience. What if I told you, you’ve found both? I started my journey in UX/UI design, working with brands like Adidas, Airbnb, Towgig, Polar Design, Alfred Inc. USA, Fone Me, and more. Over the years, I’ve successfully delivered 230+ UX/UI projects that don’t just look great, but drive real impact. My designs have helped businesses boost user retention, increase revenue, and enhance product adoption. But as I worked with startups and businesses, I saw a gap, clients would come to me for designs, then struggle to find a developer who truly understood their vision. Why should my clients go elsewhere to build the products I design? That didn’t sit right with me. That realization led me to master mobile app development, ensuring that the same care and precision that goes into the design is reflected in the development process. That’s when I dove into mobile app development. 𝐎𝐧𝐞 𝐄𝐱𝐩𝐞𝐫𝐭, 𝐓𝐰𝐨 𝐖𝐨𝐫𝐥𝐝𝐬 Now, I bring both UX/UI and mobile development under one roof. Whether it's a pixel-perfect design or a full-fledged app, I create digital products that are intuitive, scalable, and high-performing. From e-commerce platforms to AI-driven solutions, I turn ideas into market-ready products. 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐌𝐞 I offer a streamlined, end-to-end approach. You’re not juggling multiple freelancers, you’re working with someone who understands the full lifecycle of digital products. 🔹 UX/UI Design – Figma, Adobe XD, Sketch 🔹 Frontend – React.js, React Native, Swift, Kotlin, Flutter 🔹 Backend – Node.js, Django, Python, Flask 🔹 Databases – PostgreSQL, MySQL, MongoDB, Firebase 📢 Collaboration is Key (Read This Before Hiring Me!) If you want a person who just nods and follows orders, I’m not your person. I believe great things happen when both sides communicate, challenge ideas, and push for the best. I expect clear communication, commitment, and involvement. If you’re ready to invest in your project, I’m ready to make sure that investment pays off. It's rare to find a designer who develops or a developer who designs. But when the same person who designs your app also builds it, the results are seamless. If you like what you read and want to explore more, check out my specialized profiles Or better yet, let’s talk now and start turning your idea into reality! 🔑𝐊𝐄𝐘𝐖𝐎𝐑𝐃𝐒: UX/UI Design, User Experience, User Interface, Wireframing, Prototyping, Interactive Design, Responsive Design, Mobile App Design, Web App Design, Figma, Sketch, Adobe XD, Usability Testing, Accessibility Design, Design Thinking, Conversion Optimization, User Research, A/B Testing, Information Architecture, Heuristic Evaluation, Mobile App Development, iOS Development, Android Development, Cross-Platform Development, React Native, Flutter, Swift, Kotlin, API Integration, Firebase, Backend Development, Frontend Development, App Store Optimization (ASO), UI Frameworks, Agile Development, MVP Development, Native App Development, Progressive Web Apps (PWA), Mobile UX Optimization, Payment Gateway Integration, UX Strategy, UI Animation, micro-interactions, Product Design, User-Centered Design, Design Systems, Component Libraries, Dark Mode UI, High-Fidelity Prototypes, Low-Fidelity Wireframes, UX Audit, Visual Hierarchy, Navigation Design, Mobile-First Design, SaaS UX/UI, Dashboard Design, Landing Page Optimization, Customer Journey Mapping, Hybrid App Development, Native iOS & Android, Mobile API Development, App Monetization, UX/UI for Mobile Apps, Cloud Integration, IoT App Development, Machine Learning Apps, AI-Powered Apps, E-commerce App Development, Healthcare App Development, Fintech App Development, GPS & Location Services,Chatbot Integration, On-Demand App Solutions, Code Refactoring, Performance Optimization Updated: March 20, 2025
    Featured Skill Android App Development
    Ecommerce Website
    UI/UX Prototyping
    User Interface Design
    JavaScript
    Android UI Design
    Swift
    Prototyping
    iOS Development
    Mobile App Design
    Mobile App Development
    Wireframing
    UX & UI
    UX & UI Design
    Figma
  • $45 hourly
    • 4.9/5
    • (425 jobs)
    For more than 10 years as a dedicated Professional Graphic Designer, my path has been illuminated by resounding endorsements and triumphant partnerships. I've engaged with 850+ individuals, corporations, and non-profit entities, weaving their imaginative aspirations into vibrant realities. My tailor-made creations have spanned an array of industries, etching bespoke solutions that resonate far and wide. 💎 Elevate Your Vision - USPs💎 🎨 Artistry Beyond Measure - A dynamic palette of over 7 years in crafting iconic brands, captivating web designs, and striking print visuals, infused with cutting-edge concepts and visionary creativity. 🌟 The Connection Catalyst - A virtuoso in interpersonal finesse, adeptly weaving collaboration and camaraderie. Your dreams and ideas find their perfect visual translator in me. ⏱️ Velocity Redefined - Embrace design at the speed of thought! Your concepts brought to life in a mere 24 hours, a testament to the fusion of precision and imagination. Experience design like never before. It's time to unveil the extraordinary. 💡🚀 Notable Clients: Linked In • Johnson & Johnson • Abbvie • Samsung • TATA • TED • Starbucks • Air Canada • City Bank • Siemens • Amazon • Bayer AG • Vale • FedEx • McDonald's • TAL Education Group • International Paper • LIC • IRCTC • Equinix Inc. • Marriott International • Biocon • Medtronic PLC • Terex Corporation • Thai Union Group and many more. Program Experience: Adobe Xd/Figma • Adobe Photoshop • Adobe Illustrator • Adobe InDesign • Adobe After Effects • Canva • Invision • Microsoft Office As technology evolves, I've also dived into AI areas like ChatGPT and MidJourney, providing services and training in these fields. My approach is elegantly simple: Craft with intention Work with a meticulous eye Forge a serene and efficient workflow and Cultivate enduring client connections. The outcome: a bespoke and harmonious visual tale that dances effortlessly across all horizons. ✨ Offering an extensive spectrum of graphic design solutions across various industries, my services encompass: • Distinctive Logo & Branding Design (Logos, Brand Boards, Business Cards, and more) • Dynamic Digital Marketing Graphics (Web Banners, Social Media Icons, GIFs, Advertisements, and more) • Compelling Infographics & Attention-Grabbing Marketing Materials • Engaging Print Media (Flyers, Posters, Brochures, and more) • Impeccable Layout Design (Annual Reports, Magazines, Menus, Ebook Formatting, and more) • Expressive Illustration (Children’s Books, Web Icons, T-Shirt Designs, and more) • Skillful Video Editing (Advertisements, Explainer Videos, Youtube Intros, Montages, and more) • Precise Photo Editing • Innovative Front-End Mobile Application & Web Design This comprehensive array of graphic design services caters to diverse industries, ensuring a tailored and detailed approach to meet your specific needs.
    Featured Skill Android App Development
    Native Fluency
    Android SDK
    Node.js
    JavaScript
    TypeScript
    React
    Mobile App Development
    Android
    Kotlin
    Dart
    Firebase
    Firebase Cloud Firestore
    Firebase Realtime Database
    Flutter
  • $40 hourly
    • 4.9/5
    • (62 jobs)
    Tired of cookie-cutter designs? ❌ Let's create something truly unique together. 🚀 As a passionate UI/UX Designer and Full-Stack Developer, I specialize in turning your ideas into stunning, user-friendly digital experiences. 🎨 With a focus on providing creative and professional digital solutions , e.g.,E-commerce, Edtech, Fintech, Healthcare etc, I'm committed to delivering results that exceed your expectations. 🎉 Skills: -UX/UI Design: Figma, Adobe XD, Sketch, Wireframing, Prototyping, User Testing 🧠 -Web Development: HTML, CSS, JavaScript, React, Node.js, WordPress, Shopify Webflow, Wix, Squarespace & MERN Stack 🛠️ -Mobile App Development: React Native, Flutter, Swift, Dart, Java (iOS, Android )📱 -Other Graphic design services.🎨 Let's Talk About Your Project: -What are your goals? 🤔 -Who is your target audience? 🎯 -What unique features do you envision? ✨ Together, we can create something truly special. 🎉 My Approach: Deep Dive: Understanding your business and target audience. 🔍 Ideation: Brainstorming innovative solutions. 💡 Design: Creating visually appealing and user-friendly interfaces. 🎨 Development: Building robust and scalable applications. 🏗️ Testing: Ensuring a seamless user experience. ✅ Launch: Bringing your vision to life. 🚀 Why Choose Me? Passion and Creativity: I love what I do and bring a fresh perspective to every project. ❤️ Attention to Detail: Every pixel matters. I'm committed to delivering high-quality work. 🔍 Client-Centric Approach: Your satisfaction is my top priority. 😊 Continuous Learning: I stay up-to-date with the latest trends and technologies. 📚 Ready to bring your digital vision to life? Let's connect! 🤝
    Featured Skill Android App Development
    Squarespace
    Game UI/UX Design
    MERN Stack
    Graphic Design
    Ecommerce
    Mobile App Design
    Wix
    Custom Web Design
    UI/UX Prototyping
    Figma
    Webflow
    Shopify
    Web Design
    WordPress
  • $75 hourly
    • 5.0/5
    • (5 jobs)
    Hi, I'm David, a seasoned mobile app developer with extensive experience across diverse client bases, from individuals to Fortune 100 companies. Specializing in Xamarin, I am known for my unwavering dedication and ability to deliver under pressure, making me the go-to developer for mission-critical projects and tight deadlines. My portfolio showcases my proven track record of successful delivery.
    Featured Skill Android App Development
    .NET Stack
    Mobile Development Framework
    XAML
    Mobile App Development Consultation
    Mobile App Development
    iOS Development
    C#
  • $50 hourly
    • 5.0/5
    • (13 jobs)
    ABOUT ME I am a skilled software engineer with over ten years of experience working across various projects in different industries. My work experience ranges from web hosting services to medical IoT products. My educational background is in Cybersecurity at Washtenaw Community College in Ann Arbor, MI. My technical stack includes ReactJS, Vue.js, Flutter, Python (Django, Flask), and Node.js/Express. WHAT I OFFER I offer custom made applications for the web and mobile. Being a full stack engineer, I am able to create both the backend and frontend of your application. These applications can be cloud based, hosted on the Amazon AWS platform. I have the ability to develop for both iOS and Android, along with the web. I can publish your app to the Apple App Store and Android Play Store. WHAT I'VE WORKED ON - Flutter mobile apps communicating with peripherals over bluetooth low-energy - Meal Me Delivery/Ordering API Integration - IoT products communicating over MQTT - Flutter hybrid apps for web & mobile using flutter bloc - Stripe frontend and backend integration for secure payments - Various Amazon AWS services for cloud hosting HOW TO GET STARTED If you're happy with my profile and would like to discuss your project needs further, please send me an offer and we can begin communicating on the Upwork platform. 👍 HTML, CSS, JavaScript, TypeScript, Dart, Python, and Go 👍 ReactJS, Vue.js, Flutter 👍 Django, Flask, Node.js 👍 Git/GitHub, Docker, Google Firebase, Amazon AWS, OAuth, Auth0, REST APIs, Provider (Flutter), MQTT, Stripe, Flutter Bloc, SyncFusion, Redux, and operating systems such as Linux, Unix, MacOS, Windows, iOS, and Android
    Featured Skill Android App Development
    Node.js
    iOS Development
    Back-End Development
    Front-End Development
    Flutter
    TypeScript
    Flask
    Django
    Vue.js
    JavaScript
    Python
    React
    HTML
    CSS
  • $35 hourly
    • 5.0/5
    • (6 jobs)
    Hello there, Thank you for landing on my profile and for devoting your valuable time for my profile review. I have 10+ years of experience with web as well as mobile app development. Coding is my passion and I am living my passion every day, every line of code helping me to push the boundaries of my knowledge and experience. Also, I have tried my hands on the UI/UX and have substantial experience with the user-interface because the user-interface of any app is just like the reception which should be attractive and engaging at the same time. I strongly follow the steps of "Software Development Life Cycle (SDLC)" and everything will be developed under the fence of SDLC such as: ➥ System analysis and development plan ➥ Wire framing and app screen designs (UI/UX) ➥ Mobile app programming (Native and Cross-platform both) ➥ Backend + Database development ➥ Full app testing/QA ➥ Best release and feedback from client-side and other sources ➥ Final deployment on the app store ☛ I am proficient with the following technologies: ------------------------------------------------------------- ⇨ UI/UX: Photoshop, Sketch, and Illustrator ⇨ Cross-platform app development: React Native + JavaScript/TypeScript, Flutter ⇨ iOS App Development: Swift, Objective-c, Xcode, iOS SDK ⇨ Android app development: Java, Kotlin, Android Studio & Android Developer Tools and Android SDK ⇨ Backend development: LAMP (Linux, Apache, MySQL, PHP) or MEAN (MongoDB, ExpressJS, AngularJS, Node.JS, ), J2EE, Micro-services, Spring boot), Python, Django and Flask Python Frameworks I always understand the problems of the clients and execute them accordingly in real-time with the best way to solve it with high quality and strong mathematical and system control knowledge. Thank you for taking the time to go through my profile.
    Featured Skill Android App Development
    API Development
    J2EE
    Spring Boot
    Oracle
    Laravel
    iOS Development
    Angular
    Kotlin
    PHP
    Node.js
    Swift
    Objective-C
    Flutter
  • $35 hourly
    • 5.0/5
    • (41 jobs)
    Hello! My name is Cody. I'm a mobile developer with particular expertise in building applications with FlutterFlow, Flutter, Firebase, Supabase, Cloud Functions, Edge Functions, and Buildship. I have solo-developed and published full-stack applications to the App Store, Play Store, and web with 1000+ daily active users. I can own every aspect of the development cycle and would love to bring your application to life! TECHNICAL PROFICIENCIES: ● Programming Languages: Dart, TypeScript, JavaScript, Python, SQL, Swift ● Mobile Development: FlutterFlow, Flutter, React Native, Xcode, Android Studio, Expo, CocoaPods ● Web Development: FlutterFlow, React, Redux, Gatsby, Node.js, Webpack, Shopify, Ruby on Rails, Google Analytics ● Automation: , Buildship, Zapier, Make.com, n8n, Airtable ● Databases: PostgreSQL, Firebase, Supabase, SQLite, MySQL, MongoDB ● UI/UX Design: Figma, Tailwind CSS ● APIs & Tools: OpenAI, Anthropic, RevenueCat, SendGrid, Google Places, Firebase Cloud Messaging, OneSignal, GraphQL, REST, Heroku, Netlify, Sequelize, Apollo, Git, AWS S3, Docker, Postman ● Testing: FlutterFlow E2E, Cypress, Jest Native, Jest
    Featured Skill Android App Development
    iOS Development
    Web Application
    TypeScript
    API Development
    Web Development
    Front-End Development
    Back-End Development
    ChatGPT API Integration
    Supabase
    Firebase
    Mobile App Development
    Dart
    Flutter
    FlutterFlow
  • $85 hourly
    • 5.0/5
    • (4 jobs)
    Software engineer with decades of experience delivering apps. I love working on desktop apps, web apps, and mobile apps. I can do front-end or back-end work. I've worked on software used by thousands of developers that runs on millions of mobile devices. Expert cross-platform developer capable of working with native toolkits, Qt, GTK, Electron, and many other stacks. Experience working with large open-source projects like WebKit, Linux, and Android.
    Featured Skill Android App Development
    Swift
    Android NDK
    iOS Development
    Objective-C
    C
    CSS
    Java
    Amazon Web Services
    Ruby
    JavaScript
    Python
    C++
    Golang
  • $66 hourly
    • 5.0/5
    • (6 jobs)
    With over a decade of expertise in iOS/Android Mobile App development, I bring a wealth of experience to the table. Specializing in crafting applications for both iOS and Android platforms, I excel in delivering diverse projects such as Social Networking, Booking, Fitness, Shopping, and Gaming applications, among others. Here are my Core Skills & Experiences: - Native Frameworks: iOS (RX-Swift, Swift, Swift UI, Objective C), Android (Kotlin, Java) - Hybrid Frameworks: React Native (JavaScript, TypeScript), Flutter (Dart) - Back-End: Laravel, Drupal, Node.js, Meteor, ExpressJS, Django - Unit Testing: Jest, Mocha, Enzyme - Databases: MongoDB, Redis, MySQL, PostgreSQL, Google Firebase, AWS, Firebase - Software & Project Management: Git, GitHub, GitLab, Bitbucket, SVN, Trello, Asana - IDE: Apple Xcode, Android Studio, WebStorm, VScode - Tools: Node.js, Yarn, Expo, Performance Debugging I am eager to discuss your projects, ideas, and how we can collaborate to ensure success. Please feel free to reach out with any questions you may have. Thank you for considering my services. Warm regards, Victor.
    Featured Skill Android App Development
    SwiftUI
    Node.js
    Laravel
    Dart
    Flutter
    TypeScript
    JavaScript
    React Native
    Kotlin
    Java
    Objective-C
    Swift
    iOS Development
    Mobile App Development
  • $50 hourly
    • 5.0/5
    • (4 jobs)
    With a distinguished career spanning over a decade in the realm of software engineering, I have cultivated a deep expertise across diverse technologies and domains. I'm not merely an executor of code; I am a technical partner who comprehensively assesses challenges, formulates strategic roadmaps, implements effective algorithms, and maintains transparent communication channels. In embracing the entire software design lifecycle — from concept and prototyping to seamless execution, rigorous testing, and ongoing maintenance — I exhibit a command over the intricacies that define the role of a proficient software engineer. I am enthusiastic about the opportunity to contribute my expertise and insights to your esteemed project. I look forward to the possibility of further discussing how my capabilities align with your goals. 🎯 GPT-4-Turbo, GPT-3.5, Llama, Llama2, Gemini, Palm2, Tital models 🎯 Python, Django, DRF, Django CMS, Wagtail, Flask, FastAPI 🎯 CorePHP, Laravel, CodeIgnitor, WordPress 🎯 Modern JS frameworks such as React.js, ReactNative, Vue.js, Angular.js, Node.js, Experess.js 🎯 HTML. CSS, JavaScript, JQuery, Ajax, BootStrap, Foundation 🎯 SQL/NoSQL databases such as MySql, Postgresql, SQLite, DynamoDB, and MongoDB 🎯 Amazon web services(EC2, Elastic Beanstalk, Lambda, Fargate, CI/CD Pipeline, Cognito, Amplify, SNS, EBS, VPC, SQS, Cloud Directory, API Gateway, Route 53, S3, etc) 🎯 Java, Spring Boot 🎯 C#, .NET, ASP.NET, .NET CORE 🎯 Python Data Science libs(Beautiful Soup, Numpy, Scipy, Matplotlib, Pandas Dataframe, etc) 🎯 MVC architecture, Bash/Shell script - 9 years 🎯 Microsoft Azure, Heroku, Google Cloud Platform, Digital Ocean, Heroku, Netlify, and Jenkins REST API, 3rd party API, Payment API Integration 🎯 Elastic Search, Celery, RabbitMQ, Salesforce, MailChimp 🎯 Automation tools and libs(Scrapy, Selenium, BeautifulSoup, Sanic, PhantomJS, Anti-Captcha, cron job, Proxy Rotation) 🎯 Data Analysis, Data Migration, Data Cleansing, Transformation, Integration, Data Import, and Data export using multiple ETL tools 🎯 Jira, Bugzilla, Scrum, Asana, Trello, Monday 🎯 Data Engineering with Spark, Hadoop, Kafka, Yarn, Mesos, Cassandra, Hive 🎯 Github, Bitbucket, Gitlab, and Subversion 🎯 Linux OS such as Ubuntu, CentOS, SUSE
    Featured Skill Android App Development
    CSS Framework
    AWS CodeDeploy
    NodeJS Framework
    React Native
    iOS Development
    Software
    HTML
    Azure DevOps
    React
    TypeScript
    PHP
    JavaScript
    Python
    Web Application
  • $65 hourly
    • 5.0/5
    • (6 jobs)
    I’m a senior software engineer with over 10 years of experience in designing, developing, and deploying complex web applications and APIs. I’ve honed my skills across front-end, back-end, and DevOps, working with a wide range of programming languages, frameworks, databases, and tools. My focus is on crafting web solutions that are not only seamless and scalable but also user-friendly and tailored to fit the unique needs of each client.
    Featured Skill Android App Development
    C#
    C++
    TypeScript
    JavaScript
    App Development
    iOS Development
    Software Development
    Desktop Application
    Web Development
    International Development
  • $70 hourly
    • 5.0/5
    • (4 jobs)
    Are you seeking a seasoned expert to bring your mobile app vision to life? With over a decade of experience, I'm your dedicated partner in crafting exceptional iOS and Android applications that captivate users and achieve business goals. What I Bring to Your Project: * Expert Architecture & Development: I architect robust, scalable solutions and write clean, maintainable code using Swift, Kotlin, React Native, and Flutter. * User-Centric Design: I prioritize intuitive interfaces and seamless user experiences to drive engagement and retention. * End-to-End Delivery: I'm comfortable managing the entire app development lifecycle, from concept to deployment and beyond. * Collaborative Approach: I believe in clear communication and transparency, ensuring you're involved every step of the way. My Proven Track Record: * Successfully launched 10+ mobile apps across diverse industries. * Led teams to deliver complex projects on time and within budget. * Achieved high app store ratings and positive user feedback. * Optimized app performance and stability for a seamless user experience. Let's Build Your Next Success Story I'm passionate about mobile technology and committed to exceeding your expectations. Contact me today for a free consultation to discuss your project and see how I can contribute to your success.
    Featured Skill Android App Development
    Smartphone
    Mobile Game
    Mobile App Development
    Mobile App
    iOS Development
    App Development
  • $65 hourly
    • 5.0/5
    • (1 job)
    An expert with 6+ years in Front end web developer | React JS Development | React.js 20+ successfull enterprise and startup projects as a Frontend developer | Next.js | React.js | React js Developer Experienced React JS developer focused on building high-performance web applications, SaaS platforms, and scalable business solutions. Expert in React.js development, Next.js, Node.js — creating fast, responsive, and modern websites for clients worldwide. The following frontend 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 as a React developer and Nextjs Developer are on the list of expertise: 💡Perfect frontend React.js development from scratch. 💡I will make your Website or Mobile App responsive and fast-loading. 🌐 Web Development (Frontend & Backend) - Frontend: Responsive, dynamic UIs built with React.js, Next.js (App Router), TypeScript, SCSS, and Styled Components. - Backend: Scalable and efficient APIs using Node.js, Express.js, and NestJS. - Full-Stack Solutions: Expertise in MERN stack (MongoDB, Express.js, React.js, Node.js) and PERN stack (PostgreSQL, Express.js, React.js, Node.js) for modern web apps. 🛠 End-to-End Services 🚀 Web App Development: High-performance, scalable platforms tailored to business needs. 📡 API Development & Integration: RESTful APIs, WebSockets, third-party integrations (Stripe, OAuth 2.0). ☁️ Cloud & DevOps: AWS (S3, Lambda, EC2, Fargate), Docker, GitHub Actions for hosting and automation. 🔒 Security & Performance: Secure, optimized applications with best practices. 🛠 Ongoing Support: Regular updates, maintenance, and improvements. 🚀 Technologies 🖥 Frontend: React.js, Next.js, TypeScript, SCSS, Styled Components, Redux-Toolkit ⚙️ Backend: Node.js, Express.js, NestJS 🗄 Databases: MongoDB, PostgreSQL, SQLite ☁️ DevOps & Cloud: AWS (S3, Lambda, Fargate), Docker, GitHub Actions, CI/CD 🔗 Tools & Integrations: Stripe, OAuth 2.0, RabbitMQ, REST API, WebSockets Industries I Serve 🏥 Healthcare 💳 Fintech & Banking 🛍 E-commerce 🎓 Education 🏠 Real Estate 🚚 Logistics, and more! 🔗 Highlights of My Work 💎 Zelus Wallet: Developed a multi-chain crypto wallet with real-time portfolio tracking, secure transactions, and seamless Web3 integration. Tech Stack: React Native, Web3.js(Ethers.js), Solidity, Firebase, Ethereum and EVM blockchains, Bitcoin, Solana, NodeJS, NextJS, NestJS, Express, Serverless, Micro services, RabbitMQ, Redis, AWS 📍 AT Social App: Created a location-based meetup platform for planning and connecting users in real-time. Tech Stack: React Native, Swift, Firebase, AWS 🛒 Rare.market: Built a decentralized NFT marketplace for trading and authenticating digital and physical artwork. Tech Stack: Solidity, Polygon, IPFS, React.js, WEB3, Ethers.js 🎁 CBUS Rewards: Delivered a blockchain-powered loyalty rewards system, enabling tokenized incentives for multi-merchant ecosystems. Tech Stack: React.js, Web3.js, Solidity, Binance Smart Chain 📄 RevU Deals: Engineered an AI-powered NIL contract management tool to simplify legal terms for athletes. Tech Stack: Next.js, LangChain, OpenAI, PDF editing utilities 📐 AISizer: AI Foot Measurement App Developed an AI-powered app for precise foot measurement, enhancing online shoe shopping with accurate sizing and reducing returns. Tech Stack: React.JS, TensorFlow, AWS, Python, iOS, iOS ARKit, Machine Learning, AI, Pytorch, Pytorch3D, MLOps, Supabase, Vercel, HonoJs, Typescript, NextJs Why Work With Me? Expertise in modern full-stack technologies Scalable, secure, and high-performance applications Strong business understanding and user-centric development Transparent communication and on-time delivery 📅 Let’s Build Something Amazing! Click "Message" now, and let’s discuss how we can bring your project to life.
    Featured Skill Android App Development
    HTML5
    iOS Development
    Web Development
    PostgreSQL
    MongoDB
    GraphQL
    RESTful API
    Node.js
    JavaScript
    Kotlin
    Swift
    React
    React Native
    Mobile App Development
  • $60 hourly
    • 5.0/5
    • (5 jobs)
    I am a certified full-stack web & mobile developer with 10 years of experience creating optimized features for efficient products. I enjoy working with new technologies and approach new challenges creatively, with a problem-solving and owning mindset. I am particularly strong in Python, Java and TypeScript with a foundational understanding of UI/UX involving layouts and colors. I am experienced in working with the entire architecture of a web & mobile application at every level and takes pride in using my experience to create reliable, scalable, and robust solutions to overcome a wide array of issues.
    Featured Skill Android App Development
    Python
    Git
    AWS Development
    MongoDB
    Node.js
    React Native
    Angular
    React
    TypeScript
    Java
    Swift
    Web Development
    iOS Development
    Web Application
  • $60 hourly
    • 4.9/5
    • (12 jobs)
    Hello! I’m Tanner, a seasoned software engineer with over 7 years of professional experience. I specialize in building high-performance mobile and web applications, and I also have a strong background in QA automation. My expertise spans across React Native, React.js, Python, Node.js, and C#, as well as web automation using Selenium, Cypress, and Playwright. I’m passionate about delivering scalable, reliable, and user-friendly applications, and ensuring high-quality user experiences through automated testing. 🌟 Expertise in Mobile, Full Stack & QA Automation Development I’ve built intuitive, scalable applications leveraging React Native, React.js, Node.js, and Python. In addition, I am highly skilled in QA automation for web applications, especially in automated testing frameworks that ensure high-quality, bug-free releases. I have developed custom test scripts for web applications, optimized C# code for Selenium integration, and worked closely with teams to implement efficient testing processes across CI/CD pipelines. 🌐 End-to-End Mobile, Web & Automation Testing Solutions From mobile app development, API integrations, and eCommerce platforms like Shopify and WordPress, to developing automated testing frameworks and providing end-to-end QA solutions, I provide comprehensive development and testing solutions that ensure applications perform smoothly across environments. Key Skills & Expertise: ✅ QA Automation: C#, Selenium, Playwright, Cypress, Jest, React Testing Library ✅ Mobile Development: React Native, Expo, Flutter ✅ Frontend Development: React.js, Angular, TypeScript, Redux, RxJS, Softr ✅ Backend Development: Node.js, Express.js, RESTful APIs, GraphQL, Python ✅ Website Development: WordPress, Shopify, HTML5, CSS3, JavaScript ✅ Cloud Platforms: AWS (Lambda, S3, EC2, DynamoDB), Google Cloud, Azure ✅ Machine Learning: TensorFlow, Scikit-learn, Keras, PyTorch ✅ DevOps & CI/CD: Docker, Kubernetes, Jenkins, AWS CodePipeline ✅ Performance Monitoring: Datadog, CloudWatch, Splunk ✅ API Integration: Payment Gateways, Geolocation Services, Push Notifications ✅ Software Security: OAuth 2.0, JWT, Encryption Protocols ✅ UI/UX Optimization: Material UI, Ant Design, Figma Prototypes ✅ Agile Development: Scrum, Kanban ✅ Version Control: Git, GitHub, Bitbucket ✅ Testing & QA: Selenium, Jest, Cypress, Detox ✅ Cross-Platform Development: iOS, Android, PWA (Progressive Web Apps) ✅ Real-Time Features: WebSockets, SignalR ✅ Serverless Architecture: AWS Lambda, Firebase Functions 💼 A Developer Who Delivers Over the years, I’ve led teams and worked collaboratively with clients to deliver scalable, secure, and user-friendly mobile applications, websites, and eCommerce solutions. I specialize in automated testing, having created robust test automation frameworks for web applications, including end-to-end UI, API, and performance testing. My work ensures that CI/CD pipelines are fully integrated, and applications meet the highest standards of quality and performance. Why Choose Me? Proven QA Expertise: I bring expertise in automated testing (Selenium, Cypress, Playwright) to create reliable, repeatable tests for web applications. Full Stack & Mobile Proficiency: My cross-platform expertise ensures your projects are scalable and future-proof, whether it’s web development or mobile app development. Efficient Automation: I focus on optimizing test execution times, scalability, and maintainability of the automation frameworks I build. Continuous Learning: I stay up to date with industry trends and emerging testing tools to ensure the best quality standards and innovation. Let’s collaborate to build cutting-edge applications that not only meet your business needs but also maintain the highest quality standards. I’m excited to help you automate testing and ensure bug-free releases for your products. Please message me so I can provide you with the scope of work, complete detailed milestones with timeline and cost. Feel free to reach out. Let’s turn your vision into reality!
    Featured Skill Android App Development
    HTML5
    Mobile App Design
    RESTful API
    JavaScript
    Node.js
    iOS Development
    Swift
    Software Design
    WordPress
    Web Development
    React Native
    Java
    Mobile App Development
    Mobile App
  • $45 hourly
    • 5.0/5
    • (37 jobs)
    - iOS Development - Android Development - Cross Platform Mobile development - Mobile APIs - Mobile Automated testing
    Featured Skill Android App Development
    Landing Page Design
    UX Wireframe
    Design Concept
    UI/UX Prototyping
    Web Design
    Web Development
    .NET Core
    iPad App Development
    iOS Development
    C#
    Xamarin
    iOS
    Android
  • $120 hourly
    • 4.8/5
    • (29 jobs)
    **NOTICE:** I AM NO LONGER ACCEPTING ANY PROPOSALS. After more than a decade on Upwork, I'm leaving. It's terrible and abusive to freelancers and you should leave too. Upwork lies to their freelancers, changes ToS mid-contract, do not protect their freelancers from abusive businesses, and ignores the community's support needs. They're greedy, greedy, greedy, and have taken to trying to squeeze freelancers for everything they can instead of improving their platform or making the market safer. They ignore the abuses of scammers while milking their freelancers. It's not a coincidence that scammers flock to this platform and Upwork has no interest in doing anything about it because it makes the platform look more active than it really is. I suggest you get out! ----------------- Hey, My name is Jason! I'm a spirited PHP programmer and software engineer with a broad spectrum of talents. I've spent half of my life coding in some capacity or another, but most of my focus and energy in the last 12 years has been on web development for the Wordpress framework, both front-end and back-end. The non-nerd TL;DR ---- If you're a small business looking for an experienced developer with a proven track record for the Wordpress platform, then you've probably come to the right place. I've built up and torn down enough Wordpress sites at this point that I would safely use the "e" word - expert. I know the pitfalls, 'gotchas', and nuanced behaviors in Wordpress that only comes from long and committed experience with the platform. Whether it's site migration, custom plugin creation, or theme development, I can get you where you need to go. The Juicy Parts ---- Most of my work has been development for Wordpress. I'm an experienced developer for plugins and themes on the Wordpress platform and a competent back-end developer and server administrator. I build highly-available, resilient and secure distributed website applications. Preferred Work - **Implementing New Website Features** - I love system design! I love planning the data structure, building out system requirements, and implementing the final solution! - **Front-end Design and Creative** - I love UX/UI design and am a competent Figma user. I can design, slice and implement my own designs, or one that you provide. - **Large Projects** - I prefer longer contracts with lots of different kinds of tasks. Tiny contracts or monotonous work don't really appeal to. - **Maintenance/On-call Retainers** - My services are available on retainer. This means that I can handle your site's issues as they crop up, without having to find a developer every time. Most experienced with - Server Administration (*NIX, VPS, Docker) - PHP (Wordpress framework) - Javascript/Typescript (Frontend/React and Gutenberg Blocks development) - CSS3/SCSS (Frontend styling and design) I am an experienced administrator of LAMP stacks (Primarily Ubuntu server management.) I've developed dozens of custom plugins and themes for clients on the Wordpress platform. I've also done a number of "emergency interventions" for compromised websites. (Hardening the platform, using Apache to strengthen sensitive areas, using CLI tools like grep to search for and eliminate compromising scripts, etc.) Experienced user in: - Github/Git - A number of IDE's (I prefer VSC and GNU Emacs) - Unix CLI (I use WSL for my development) I have experience with the following technologies and have done or worked on projects with them, though they haven't been my primary focus. - socket.io - Mozilla Audio Webkit - Java - Python (Primary experience with matplotlib, pandas, numpy and datasets) - C/C++ - Unreal Game Engine (C++ and Blueprints) Other ---- As a well-rounded geek, it's inevitable that I end up with my fingers in multiple cookie jars over the years. I have passion for and have done personal projects over the years in other fields such as: - Video production - Game development - Visual Effects and AV post-processing - 3D Animation and modeling - Audio Engineering and sound design - Music Production (Production and Mastering) - Data Analysis (Python) - Photo Manipulation and Editing - Icon and graphics creation Misc Talents - Fluent Spanish speaker (Viví en Chile por dos años y aprendí el Éspañol mientras que estuve allí.) - I'm a musician as a hobby and write music in my freetime. - I can probably kick your butt in a round of Mario Smash Brothers Melee My earliest programming memory is of my father teaching me procedural programming logic with Q-Basic on an old MS-DOS machine at about age 10. When I was 16, I built and maintained my first site. I also have countless years of online SEO/Marketing experience through everything from Google Adwords, Direct Online Marketing, Backlinking, and modern Ad Campaigns through social media. Go ahead and shoot me an invitation. I'll take a look at it.
    Featured Skill Android App Development
    Castilian Spanish
    WordPress
    HTML
    CSS
    JavaScript
    PHP
    Java
    jQuery
    MySQL
  • $95 hourly
    • 4.8/5
    • (194 jobs)
    Hello, I am Steve ✔️ I am an all rounded, digital solutions creator working with a small, very skilled, IT "seal" team. ✔️ My 100% focus is on building custom web & mobile applications with a bold, outstanding, and articulate design ✔️ I graduated with a Diploma in IT in 2001, a Degree in Computer Science in 2005, and a Master's Degree in Applied Computer Science in 2008 from the University of Maryland ✔️ Since 2011, we have served dozens of small & medium businesses, startups & individuals helping turn their ideas into reality. ✔️ We have successfully completed 3 projects funded by the federal government and done a project for Microsoft ✔️ If you want a reliable, serious, truly commited partner whom you can easily reach, I am here. ✔️ We enjoy what we do & want to keep building a strong reputation as reliable and trustworthy experts in providing technology solutions ✔️ Besides work, I love reading, ice skating, roller skating, traveling and speaking Here is some feedback from Upwork clients like you: ⭐ Stephen's strength is his timely communication. He tries his best to adhere to the specifications and feedback provided along the way and genuinely wants to create the best product and satisfy user needs. It was a very professional and transparent experience working with him. ⭐ Best developer on upwork. Will never use anyone again, This guy is the real deal and the best I've ever worked with ⭐ It was a great work by an Excellent Freelancer! ⭐ Great vision and ability to make sense of non-technical people like me. ⭐Steve did a great job. Working with him is a pleasure and very productive ⭐ I have had problems with some other freelancers in the past, so I posted a portion of a larger project as a test. Stephen amazed me with a flawless deliverable on the first try... ⭐Steve is great! Attentive and got the job done right! ⭐Great communication and quick responses. ⭐ Great Work. Pleasure to work with ⭐ A+++ ⭐Very professional. Great work and service. Thank you. ⭐A+ wirk again Stephen. Thank you ⭐Steve produced great webdesign and is very motivated to understand the clients vision ⭐Steve is a good webdesigner who invests time and energy to find out what the client has in mind for his project. I enjoyed working with him. ⭐Steve works hard and takes pride in his work. He pushes hard when he needs to and made sure we were satisfied with our apps and website work! ⭐Great and trustful freelancer with wonderful design skills. I highly recommend him for any freelance job. Core Expertise: ⚡️UI/UX and Design: Web & Mobile UI Design, HTML5, CSS3, JS, Bootstrap, Responsive design ⚡️Mobile: iOS development, (Swift + Xcode), Android development (Java + Android Studio) ⚡️Development: Custom PHP, Laravel, React, Angular, JQuery Framework, Yii, CodeIgniter, WordPress, Backend Systems ⚡️eCommerce: Custom eCommerce, Shopify, WooCommerce, Apple Pay, Google Pay, Stripe API, PayPal API, Amazon Payments, 2-Checkout, PayU, First Data
    Featured Skill Android App Development
    Web Development
    Logo Design
    User Experience Design
    WordPress
    User Interface Design
    Web Design
    iOS Development
    MySQL
    PHP
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