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  • $50 hourly
    • 5.0/5
    • (17 jobs)
    I’m Vinicius Assis Neves, a Senior Mobile and Web Developer from Brazil with extensive experience in cross-platform development, specializing in Flutter. Over the past several years, Flutter has been my core technology for building efficient, high-quality mobile applications. In addition to Flutter, I have strong experience in web development, Android development, and basic knowledge of iOS development. I am proud to be an Upwork Top Rated Freelancer, recognized for my outstanding performance and consistent success across both short- and long-term projects. My professional journey began as a mobile developer at Lemon Inteligência, where I started working with Flutter. Thorought, I also took on a part-time role on Upwork for an Australian company. Eventually, I transitioned to working mostly on Upwork, where I’ve since honed my skills in system architecture, mobile and web development, web scraping, security, and best coding practices. My skill set includes: • Mobile App Development (Flutter, Android) • Backend Development (Node.js, PHP, AWS) • Web Development (CakePHP, WordPress) • Database Management (MySQL, PostgreSQL) • Cloud Architecture (AWS services, including Lambda, API Gateway, and S3) Although Flutter development remains my primary focus, I am always eager to learn new technologies and continuously expand my skill set. I’ve had the privilege of working on a wide variety of projects, from mobile apps to complex web systems, and I’m confident that we can achieve great results together. Feel free to reach out anytime to discuss your project or ask questions about my experience. I’m excited to collaborate with you!
    Featured Skill Flutter
    Mobile App Development
    In-App Purchases
    Hybrid App Development
    iOS
    Firebase
    CakePHP
    Android
    MySQL Programming
    Dart
    API
    HTML
    Java
    PHP
    CSS
  • $45 hourly
    • 4.7/5
    • (27 jobs)
    I'm expert in SAP B1, I've been working with this system for many years, and I've been builded many AddOns, so i know very well SAP Database, it helps me a lot for create good solution to problems. I'm working with Flutter too, so i can easy to integrate SAP with an mobile app or website. I'm easy to talk and i will try to do my best always to solve your problem fast, I'm not looking only for money, Network to me is very important, so i will do my best.
    Featured Skill Flutter
    SQL
    API Development
    SAP Crystal Reports
    Microsoft SQL Server Programming
    SAP BusinessOne
    Application Integration
    SAP
    SAP HANA
    API Integration
  • $35 hourly
    • 5.0/5
    • (3 jobs)
    Hi, I'm Marcel, software developer! I've been working with mobile development for the past 10 years, and started with native Android development, but focused on Flutter development for the past 3 years. Also, I do have experience in other development areas such as Chatbot (worked with DialogFlow, BotFramework to create Facebook, WhatsApp chatbots) and backend development (Node.js and Nest.js), working with the most known cloud providers such as AWS, Azure and Firebase/GCP. Hope I can help you!
    Featured Skill Flutter
    AWS IoT Core
    Terraform
    Mobile App Development
    Serverless Computing
    Node.js
    Firebase
    NestJS
    Amazon DynamoDB
    AWS Lambda
    Microsoft Azure
    Azure Bot Service
    SQL
  • $30 hourly
    • 5.0/5
    • (10 jobs)
    As a full-stack developer, my role encompasses all phases of software development, from conception to implementation, spanning mobile platforms such as Android and iOS, as well as the web. I have expertise in modern technologies, such as Flutter for mobile development, utilizing the Dart language and Clean Architecture. On the frontend, I am responsible for creating attractive and functional user interfaces, while on the backend, I employ technologies like NestJs, Typescript, and JavaScript, following the principles of Clean Architecture. I have a solid understanding of databases, working with both SQL and NoSQL, including Mongo and Postgres. My experience extends to cloud services integration, using Firebase and AWS, to ensure a robust and scalable infrastructure. Additionally, my role includes the implementation of solutions in Cloud Services, providing a complete user experience. As part of full-stack development, I take responsibility for the entire software development lifecycle, adapting to emerging technologies and diverse platforms. The application of Clean Architecture and the careful selection of technologies ensure the delivery of high-quality solutions. In summary, as a full-stack developer, I efficiently integrate various technologies to create robust and innovative applications, both for mobile and web, maintaining a constant focus on backend efficiency and user experience.
    Featured Skill Flutter
    MySQL
    NestJS
    Firebase
    User Authentication
    RESTful API
    In-App Purchases
    GraphQL
    Dart
    Firebase Cloud Firestore
  • $20 hourly
    • 4.9/5
    • (8 jobs)
    "𝗘𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝘁 𝗖𝗼𝗱𝗲 𝗳𝗼𝗿 𝗣𝗼𝘄𝗲𝗿𝗳𝘂𝗹 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀" ⭐⭐⭐⭐⭐ 100% JOB SUCCESS ( not only on Upwork ) 🖐 I’m a Senior Front-end Developer specializing in Next.js and React.js. I have 5+ years of experience creating pixel-perfect, responsive web applications that exceed client expectations. 🔹 Frontend Technologies:    • HTML, CSS, JavaScript, TypeScript    • React, Redux, Next.js    • Tailwind CSS, Styled Components, SASS    • Bootstrap, Material-UI, Chakra UI    • Webpack, Babel, ESLint 🔹 Mobile Development:    • React Native (Cross-platform mobile apps)    • Flutter (Native-like apps developed with Dart)    • Responsive Web Design (Ensuring seamless mobile experiences) 🔹 Design & UX:    • Figma (UI/UX design, prototyping, collaborative design)    • User-Centric Design Principles (usability and responsive design) 🔹 Version Control:    • Git, GitHub (Efficient code management and collaboration) 🔹 API & Integrations:    • RESTful APIs (Seamless functionality integration)    • Third-party API Integration (Platforms like Stripe, Firebase) 🔹 Performance Optimization:    • Code Splitting, Lazy Loading (Faster load times)    • Mobile Performance Optimization (Smooth and fast apps) 𝗪𝗵𝗮𝘁 𝗶 𝗼𝗳𝗳𝗲𝗿: I specialize in turning your vision into high-performing web and mobile applications that meet your technical requirements and deliver an exceptional user experience. If you need a developer 𝗖𝗼𝗺𝗺𝗶𝘁𝘁𝗲𝗱 𝘁𝗼 𝗘𝘅𝗰𝗲𝗹𝗹𝗲𝗻𝗰𝗲 and delivering beyond expectations, let’s connect and make your project successful. Ready to Elevate Your Project? Let’s Get Started!
    Featured Skill Flutter
    Node.js
    GitHub
    TypeScript
    Web3
    Next.js
    React
    Front-End Development
    UX & UI
    Web Development
    CSS 3
    HTML5
    JavaScript
    Figma
    Web Design
  • $60 hourly
    • 4.4/5
    • (30 jobs)
    ✅ "Julio was amazing to work with, completed all tasks as we instructed and exceeded our expectations. Will definitely work with him again!." - If you want this level of service, see my profile, this is one of many happy customers. 🚀 Hello, my name is Julio. I'm a full stack developer, my goal it's to make your project a success, proposing solutions and helping my clients to develop a better product. My main experience is with Mobile development using Flutter framework, I aim to develop pixel perfect designs, with great code quality, that's highly maintainable and understandable for any developer, which will save a lot of time and money for my clients. My secondary experience is to develop API's with Django and Django Rest Framework, and Fast API, creating backend API's for different applications. Some of my Flutter abilities: - State management - (Stacked, Riverpod, Bloc) - Pixel Perfect Design - Firebase integration - Authentication, Cloud Messaging (push notifications), Crashlytics, Analytics, Firestore Database. - MVVM architecture - Stripe - In App Purchases - Sendbird chat - Clean code - Intercom - MixPanel - Segment - Unit tests - Integration tests - CI/CD (Code Magic) - Graphql for Flutter - Rest API - 2+ years of programming with Kotlin for Android - Small native sdk(Android and iOS) integration with Flutter (plugin) Some of my Django abilities: - Api development with Django RestFramework - Secure Web Sockets, WSS, with Django-channels ASGI - Realtime database with REDIS - Geo-based database, using POSTGIS - Social authentication, both api and Web App - Stripe - Web Scraping - Reactive web page using VUE.js - Unit tests - Integration tests - CI/CD Experience with: - OpenAI Chat GPT - Machine Learning - Adobe XD - Figma - Sketch - JIRA - Slack - Clickup - Zeplin - Github - Bitbucket - DynamoDB - SQLModel - AWS - Heroku - Google Cloud I have good experience working remote only, without the need for constant feedback. If creating top quality apps sounds interesting, send me a message and we’ll set up a time to talk. :)
    Featured Skill Flutter
    Software
    Angular
    Android
    Django
    iOS Development
    Firebase
    Dart
    Web Application
    Push Notifications
    Mobile App Development
    iOS
    ChatGPT
    Machine Learning
    Python
  • $20 hourly
    • 5.0/5
    • (5 jobs)
    8+ software engineer, specializing in iOS/macOS development. My expertise extends to Flutter, C#, Node, and Angular. Enthusiast of Apple technologies, I have applied my skills across diverse industries, including banking, real estate, logistics, and education. Additionally, I'm passionate about mentoring aspiring developers in the field.
    Featured Skill Flutter
    Apple Xcode
    iOS
    Swift
    Mobile App Development
    iPadOS
    Dart
    iOS Development
  • $20 hourly
    • 5.0/5
    • (22 jobs)
    No AI on chat, there will always be a REAL person (Me!) on the chat with you! I'm a game developer experienced in low level engine programming and high level game design, I also have delivered several large and small projects in varying areas, like education, science, medicine, well-being, and more! I absolutely love video games of all kinds, but especially puzzle games and old school FPS's * Experienced in low-level programming, I love tinkering with old engines and have experimented with making my own over the years, you can see one in action in my game AtomsVGA * Have shipped software and games in several areas, from science stuff in uni, to educational Unity phone apps for Brazillian Public schools and weird little puzzle games for old forgotten operating systems * Fluent in back-end and front-end, I have hosted web-servers and databases for several projects, I can deliver one for you too! Lets work together! It will be great!
    Featured Skill Flutter
    WebAssembly
    Django
    Lua
    Python
    Unreal Engine
    Godot
    Unity
    C#
    Software Architecture
    Video Game
    Game Mechanics
    Game
    C++
    C
  • $30 hourly
    • 4.5/5
    • (5 jobs)
    - Experienced Flutter/Dart Developer: Proficient in developing mobile applications using Flutter and Dart. - Firebase Integration: Skilled in integrating Firebase services with Flutter applications, including push notifications and cloud functions. - Software Architecture: Strong background in clean architecture and test-driven development (TDD) practices. - Corporate Data Systems: Experience with large volume corporate data systems and technologies, including Laravel/PHP, Bootstrap, Java Web, JavaScript, jQuery, HTML, PL/SQL, C, C++, Perl, Natural, and ADABAS. - Data Analysis and Maintenance: High-performance data analysis and maintenance for reports and system corrections using databases such as MySQL, Oracle, and SQL Server. - Complex Systems Development: Expertise in creating, constructing, and maintaining complex systems tailored to various industries. - Industry Knowledge: Extensive knowledge and interaction with high-performance systems, serving clients in telecommunications, steel, and government sectors. - Python Proficiency: Academic training and experience with Python, including the development of neural network models. - Mathematics Expertise: Solid knowledge in mathematics, complemented by didactic experience. - Language Skills: Native Brazilian Portuguese speaker.
    Featured Skill Flutter
    Oracle Database
    Smartphone
    Tablet
    Test-Driven Development
    Dart
    SQL
    Python
    Firebase
    PHP
    Bootstrap
    Clean Architecture
    Mobile App Development
    User Authentication
    MySQL
  • $25 hourly
    • 3.4/5
    • (4 jobs)
    My name is Israel Martins. I'm a full-stack developer focused on MERN stack, who has been working in IT for 10 years and has experience in software development for 6 years. In addition, I have skills with PHP, React Native, and Flutter. I'd like to share a bit about my most recent professional experiences: ● Feature development project for ReactJS applications and NodeJS/Express systems, including low-code and front-end React/NextJS/Redux applications. Mathematical queries and calculations to the MongoDB database with large amounts of data through paging and in-memory logging in RedisDB. Managing communications between microservices using messengers like RabbitMQ. My skills include: ReactJS, React Native, NodeJS, Express, NestJS MongoDB, RedisDB, RabitMQ, TypeScript, Python, React Native, Flutter, Redux, React Router, Sequelize, Firebase, AWS CloudFront, AWS Lambda, S3, AWS Transcoder, NextJS, Google Lighthouse, Rollup.JS, REST, Botpress, JWT, HTML, CSS, and JavaScript. I am looking for new projects as a full-stack developer and am open to new challenges.
    Featured Skill Flutter
    Sequelize
    React Native
    MongoDB
    React
    Node.js
    PHP
    Laravel
  • $100 hourly
    • 5.0/5
    • (31 jobs)
    With a passion for building beautiful, custom UIs with responsive animations, I help companies bring their next big product to life on any screen. My areas of expertise include: - Flutter / Dart - Firebase / MySQL / SQLite - MobX / BLOC state management - Git - Google Maps - Google, Facebook, Email, Twitter, GitHub, Phone, and Apple authentications - Crashlytics, Google Analytics, AdMob, Push notifications - Custom widgets and complex animations - In-App purchases, Stripe - Figma, Sketch, Adobe XD resource extraction - BDD, TDD Welcome! Let's have a chat :)
    Featured Skill Flutter
    UI Animation
    JetBrains IntelliJ IDEA
    Mobx
    Test-Driven Development
    GitHub
    Android
    iOS
    Firebase
    Kotlin
    Android Studio
    Mobile App Development
    Smartphone
    Dart
    Hybrid App Development
  • $50 hourly
    • 4.8/5
    • (11 jobs)
    ABOUT ME: I hold a Bachelor’s degree in Computer Science from the University of São Paulo (USP) and have 7+ years of professional experience in full-stack development. My expertise spans mobile app development, web technologies, and backend systems, utilizing modern frameworks to create impactful solutions. SKILLS AND EXPERTISE: BACKEND DEVELOPMENT: Proficient in Python (Django, FastAPI) for robust APIs, with experience in Nest.js, PostgreSQL, MongoDB, and scalable architectures. MOBILE DEVELOPMENT: Extensive experience with Flutter, React Native, and Android native (Kotlin/Java), delivering high-quality cross-platform and native apps. WEB DEVELOPMENT: Skilled in React.js and Next.js, building responsive, user-friendly, and high-performance web applications. CLOUD AND DEVOPS: Experience with GCP, AWS, Redis, and Kafka, achieving cost-efficient, scalable infrastructure with high availability. SELECTED WORK EXPERIENCE: SENIOR SOFTWARE ENGINEER (TEACHER AI): Developed AI-powered language learning tools with real-time voice interaction, optimized APIs with FastAPI and PostgreSQL, and implemented scalable microservices. MOBILE ENGINEER (NEON): Contributed to a Brazilian fintech app with over 1 million daily active users, improving app performance by 20% and maintaining a 99.99% crash-free rate. SOFTWARE ENGINEER (VENTURUS): Pioneered voice recognition technology for R&D projects, architecting scalable backends and reducing payment processing time by 30%. FULL-STACK DEVELOPER (FLIPON): Built a platform for electric scooter rentals, leading a team to manage IoT data for 5,000+ scooters and reducing mapping service costs by 95%. NOTABLE PROJECTS: KEYGLEE DEALS: A property search app for U.S. users, available on App Store and Google Play. FLIPON: An IoT mobility solution with 15,000+ installs. POLE PURPOSE: A Flutter-based app supporting Pole Dance enthusiasts in the UK. UNBOX: A Gmail API client for business email inboxes built with React Native.
    Featured Skill Flutter
    Functional Programming
    Git
    Trello
    Model View ViewModel
    Business with 1-9 Employees
    Tablet
    iOS
    Android
    In-App Purchases
    Smartphone
    Dart
    Java
    Kotlin
    React Native
  • $40 hourly
    • 5.0/5
    • (10 jobs)
    I am a Software Engineer with a graduation in Computer Science and 14 years of experience in software development. In this moment I'm working with Ruby on Rails since march, 2021. Before I worked since 2008 with technologies as Java, PHP, .NET, etc. I'm only searching for Ruby jobs. You can see in details on my profile all companies I already worked and the technologies I used on each one. I have an advanced level of english for writting, reading and speaking. I'm not fluent yet, but I'm always studying and taking private english classes to improving it.
    Featured Skill Flutter
    Unit Testing
    System Analysis
    Web Development
    JavaScript
    PostgreSQL
    Git
    PHP
    Ruby on Rails
    Java
  • $45 hourly
    • 4.7/5
    • (4 jobs)
    Hi, I’m a seasoned software engineer with over 15 years of experience in backend, frontend, mobile development, and database management. I specialize in building scalable, maintainable applications across various platforms. Tell me your challenge, and I'll provide the solution. • Flutter Development: 5 years of professional experience with Flutter, utilizing Firebase services (Authentication, App Check, Firestore, Functions, Messaging, Remote Config, Dynamic Links, Analytics, and Crashlytics). Expertise in Clean Architecture, MVVM, MVC, TDD (unit, widget, and integration tests), and state management libraries (GetIt, BLoC, Cubit, Hooks, Riverpod, MobX, ChangeNotifier). Skilled in creating white-label apps, internationalization, custom themes, design systems, micro frontends, and app publishing with Fastlane. • App Deployment & CI/CD: Proficient in publishing apps on Google Play Store (Android) and Apple App Store (iOS), including implementing CI/CD processes for streamlined deployment. • Full Stack Development: Over 10 years of professional experience with Java (Spring), .NET (C#, Core, MVC), Node.js (NestJS), Angular, Vue.js, and React. • Service-Oriented Architecture: Solid experience in SOA integration, consuming REST and SOAP APIs, and developing microservices. • Database Expertise: Extensive experience in database modeling (OLTP and OLAP), ETL processes, query optimization, procedure, and jobs programming. Proficient with SQL databases (SQL Server, Oracle, PostgreSQL, MySQL) and NoSQL databases (MongoDB).
    Featured Skill Flutter
    Docker
    Python
    Database Modeling
    RESTful API
    GraphQL
    Node.js
    Firebase
    React
    Java
    ETL
    Angular
    .NET Framework
    Vue.js
  • $40 hourly
    • 5.0/5
    • (4 jobs)
    I'm a passionate software developer with more than 5 years of experience. My goal in the world is help people with technology creating applications from scratch and delivering it to the world. Implemented applications using React and Flutter and other techs using strategies with TDD and CI/CD to be available on the Google Play Store and Shopify App Store. Created REST API's with Django using TDD approach and delivering it to production using CI/CD pipelines. Integrated payment platforms like Stripe, Mercado Pago and others.
    Featured Skill Flutter
    Docker
    Django
    Web Application
    Flask
    PostgreSQL
    Python
    MySQL
    Dart
    React Native
    JavaScript
    React
  • $40 hourly
    • 5.0/5
    • (5 jobs)
    𝐇𝐨𝐰 𝐜𝐚𝐧 𝐈 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮? 𝑾𝒐𝒓𝒌𝒊𝒏𝒈 𝒘𝒊𝒕𝒉 𝒎𝒆, 𝒚𝒐𝒖 𝒘𝒊𝒍𝒍: ⭐ Ensure that your user has an application that runs smoothly and is not constantly plagued by bugs ⭐ Have clean code. Easy to maintain, modify and scale. No more starting the project at a great speed and after a while spending more time correcting code than writing new features ⭐ Receive constant updates. You will always know what I did yesterday, today and what I'm going to do tomorrow ⭐ 𝑺𝑨𝑽𝑬 𝑴𝑶𝑵𝑬𝒀 by working with someone who doesn't screw around just to get more paid hours. I have zero interest in making the project take longer than necessary to deliver it with quality. ℹ️ ℂ𝕙𝕖𝕔𝕜 𝕠𝕦𝕥 𝕞𝕪 𝕠𝕟𝕝𝕚𝕟𝕖 𝕔𝕦𝕣𝕣𝕚𝕔𝕦𝕝𝕦𝕞/𝕡𝕠𝕣𝕥𝕗𝕠𝕝𝕚𝕠 𝕨𝕖𝕓𝕤𝕚𝕥𝕖: igorcurriculum.com 👨‍💻 𝗛𝗲𝗹𝗹𝗼. 𝗜'𝗺 𝗜𝗴𝗼𝗿, 𝗮 𝗳𝗹𝘂𝘁𝘁𝗲𝗿 𝗮𝗻𝗱 𝗱𝗮𝗿𝘁 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘀𝘁 𝘐 𝘩𝘢𝘷𝘦 𝘢𝘭𝘸𝘢𝘺𝘴 𝘣𝘦𝘦𝘯 𝘱𝘢𝘴𝘴𝘪𝘰𝘯𝘢𝘵𝘦 𝘢𝘣𝘰𝘶𝘵 𝘬𝘦𝘦𝘱𝘪𝘯𝘨 𝘶𝘱 𝘸𝘪𝘵𝘩 𝘵𝘦𝘤𝘩𝘯𝘰𝘭𝘰𝘨𝘺 𝘯𝘦𝘸𝘴 𝘢𝘯𝘥 𝘮𝘢𝘳𝘬𝘦𝘵 𝘵𝘳𝘦𝘯𝘥𝘴. 𝘐𝘯 𝘵𝘩𝘢𝘵 𝘴𝘦𝘯𝘴𝘦, 𝘸𝘩𝘦𝘯 𝘐 𝘴𝘢𝘸 𝘍𝘭𝘶𝘵𝘵𝘦𝘳 𝘪𝘯 𝘚𝘦𝘱𝘵𝘦𝘮𝘣𝘦𝘳 2019 𝘢𝘯𝘥 𝘢𝘭𝘭 𝘪𝘵𝘴 𝘱𝘰𝘵𝘦𝘯𝘵𝘪𝘢𝘭, 𝘐 𝘴𝘰𝘰𝘯 𝘬𝘯𝘦𝘸 𝘵𝘩𝘢𝘵 𝘵𝘩𝘢𝘵 𝘸𝘢𝘴 𝘵𝘩𝘦 𝘧𝘶𝘵𝘶𝘳𝘦 𝘢𝘯𝘥 𝘐 𝘴𝘵𝘢𝘳𝘵𝘦𝘥 𝘶𝘴𝘪𝘯𝘨 𝘵𝘩𝘦 𝘵𝘦𝘤𝘩𝘯𝘰𝘭𝘰𝘨𝘺 𝘢𝘵 𝘢 𝘵𝘪𝘮𝘦 𝘸𝘩𝘦𝘯 𝘧𝘦𝘸 𝘶𝘴𝘦𝘥 𝘪𝘵, 𝘵𝘩𝘶𝘴 𝘣𝘦𝘪𝘯𝘨 𝘢𝘯 𝘦𝘢𝘳𝘭𝘺 𝘢𝘥𝘰𝘱𝘵𝘦𝘳. 𝘚𝘪𝘯𝘤𝘦 𝘵𝘩𝘦𝘯, 𝘐'𝘷𝘦 𝘧𝘰𝘤𝘶𝘴𝘦𝘥 𝘰𝘯 𝘴𝘱𝘦𝘤𝘪𝘢𝘭𝘪𝘻𝘪𝘯𝘨 𝘮𝘺 𝘬𝘯𝘰𝘸𝘭𝘦𝘥𝘨𝘦 𝘪𝘯 𝘵𝘩𝘦 𝘥𝘢𝘳𝘵 𝘭𝘢𝘯𝘨𝘶𝘢𝘨𝘦 𝘢𝘯𝘥 𝘶𝘯𝘥𝘦𝘳𝘴𝘵𝘢𝘯𝘥𝘪𝘯𝘨 𝘩𝘰𝘸 𝘵𝘩𝘦 𝘍𝘭𝘶𝘵𝘵𝘦𝘳 𝘧𝘳𝘢𝘮𝘦𝘸𝘰𝘳𝘬 𝘢𝘯𝘥 𝘪𝘵𝘴 𝘮𝘢𝘪𝘯 𝘢𝘱𝘪'𝘴 𝘸𝘰𝘳𝘬 𝘶𝘯𝘥𝘦𝘳 𝘵𝘩𝘦 𝘩𝘰𝘰𝘥. 📈 𝐓𝐡𝐞 𝐦𝐚𝐢𝐧 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 𝐈 𝐮𝐬𝐞 𝐭𝐨 𝐞𝐧𝐚𝐛𝐥𝐞 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐬𝐜𝐚𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲: ✅ Micro-Frontend for splitting tasks in bigger groups ✅ 100% Test coverage for quality assurance ✅ Create Internal Packages for better componentization ✅ Clean Architecture for easy to work project structure ✅ Efective Documentation for new dev's faster introduction ✅ Multithreads for ui perfomance ➕ Among the other intermediate-advanced topics that I know are: • Theme Data manipulation • Deep knowledge in Element/Render tree • Widget lifecycle management • Use of Flutter DevTools to find performance issues and fix them • Implicit and explicit animations • Direct canvas drawing • Effective dart documentation • Create dart CLI tools • Flutter Web SEO • Deep knowledge in Element/Render tree • Internationalization • Dependency Injection • Test presets and default mocks • Golden tests - 𝑪𝒍𝒊𝒆𝒏𝒕 𝒆𝒙𝒑𝒆𝒓𝒊𝒆𝒏𝒄𝒆 𝒊𝒔 𝒎𝒚 𝒏𝒖𝒎𝒃𝒆𝒓 𝒐𝒏𝒆 𝒑𝒓𝒊𝒐𝒓𝒊𝒕𝒚 So let me help you add value to your client. 📩 For that, please shoot me a message and let's talk just to ensure I will be a great fit for you
    Featured Skill Flutter
    In-App Purchases
    Dart
    Social Media Account Integration
    Mobile App Development
    Agile Project Management
    Scrum
    API Development
    Mobile Development Framework
    Flutter Stack
    Agile Software Development
    Unit Testing
  • $65 hourly
    • 5.0/5
    • (1 job)
    I have 10+ Years experience in Software development. I helped to build many successful projects. These days, my main interests are: Building professional IOS, Android, MAC and Web Apps using Flutter and Firebase.  In the past I used these technologies: JavaScript, HTML, C#, ASP.NET, VUE.JS, NODE.JS, Golang
    Featured Skill Flutter
    GPS
    Vue.js
    Geolocation
    Google Cloud Platform
    Golang
    Application Security
    Node.js
    Firebase Cloud Firestore
    Firebase
  • $35 hourly
    • 5.0/5
    • (1 job)
    Hey there! 👋 Ready to explore the world of mobile apps and AI with me? 📱💡 I'm here to make tech stuff simple and fun! 😎 Whether you're dreaming up the next cool app or curious about AI, I've got your back! 💻✨ I've spent years playing with code and figuring out how to make things work. From building apps in Java, Swift, and Python to diving into AI, I've done it all! 🚀 But hey, let's keep things light and enjoyable. So, let's team up and bring your ideas to life! 🌟 Reach out, and let's make some tech magic together!
    Featured Skill Flutter
    Desktop Application
    Mobile App
    AI Mobile App Development
    Android App Development
    Objective-C
    Swift
    Kotlin
    Java
    Mobile App Development
    Hybrid App Development
    Native App Development
    React Native
  • $35 hourly
    • 5.0/5
    • (1 job)
    I am a developer with extensive experience in building scalable web applications for small and medium-sized businesses. Whether you're aiming to architect a robust backend with Node.js, implement RESTful APIs with Python, or create dynamic user interfaces using React.js and Vue.js, I can provide tailored solutions to meet your needs. Skilled in full stack development, I leverage modern frameworks and libraries to deliver responsive and high-performance applications. My project management approach encompasses agile methodologies, ensuring interative progress and timely delivery. Regular communication is vital to a successful partnership, so let's stay connected throughout the development process to ensure your vision is realized effectively!
    Featured Skill Flutter
    Django
    ExpressJS
    Python
    TypeScript
    JavaScript
    Tailwind CSS
    React Native
    Vue.js
    React
    CSS
    HTML5
    Web Development
    Web Application
  • $40 hourly
    • 5.0/5
    • (1 job)
    🔹 Role: Full-Stack Developer | AI Engineer | CRM & Automation Specialist 🔹 Expertise: AI-powered applications, CRM & Workflow Automation, Web & Mobile Development 👋 Hi, This is Caio. I specialize in developing AI-powered applications, intelligent CRMs, enterprise automation, and cross-platform mobile apps that streamline workflows, enhance decision-making, and drive business growth. With expertise in advanced RAG techniques, AI-powered search, LLM automation, and custom CRM development, I can deliver scalable, efficient, and secure solutions tailored for businesses across industries. 1️⃣ Core Offerings 💡 AI & Automation Solutions 🔹 AI Search & Knowledge Automation ✅ GraphRAG-Powered Search – context-aware knowledge graphs for instant data retrieval ✅ Enterprise LLM Chatbots – AI agents for automated customer support & document processing ✅ Real-Time Data Insights – AI-powered business intelligence & workflow automation 🔹 AI in Healthcare & Medical Tech ✅ AI-Assisted Medical Claims & Billing – OCR & AI-powered document processing ✅ LLM Medical Knowledge Retrieval – AI knowledge assistants for clinical decision-making ✅ Healthcare AI Chatbots – HIPAA-compliant AI for patient support & medical inquiries 🔹 AI-Driven Insurance Automation ✅ Instant Damage Assessment (Image AI) – AI-powered vehicle & property claims evaluation ✅ Fraud Detection & Risk Assessment – AI models for pattern recognition & anomaly detection ✅ AI-Powered Claims Processing – Automating claim approvals, underwriting & verification 👥 Advanced CRM Development 🟣 Custom AI-Powered CRMs – Customer-focused platforms designed for automation & engagement 🟣 Multi-Tenant Cloud-Based CRMs – Scalable business solutions with modular architecture 🟣 AI-Enhanced Sales & Marketing Pipelines – Automated lead tracking, campaigns, and customer journey mapping 🟣 ERP & Workflow Solutions – AI & data-driven CRM + ERP ecosystems for business growth 📱 Mobile & Cross-Platform Development 🔵 AI-Powered CRM & Business Apps – Scalable Flutter & React Native solutions 🔵 Seamless API Integrations – Secure REST, GraphQL & WebSockets for real-time data sync 🔵 Cloud-Optimized Mobile Solutions – Fast, reliable, and AI-enhanced cross-platform applications 2️⃣ Technical Expertise 🔹 Artificial Intelligence(AI) & Automation ✅ AI & LLM Integration: LangChain, LlamaIndex, LangGraph, LangSmith, LangFuse, Hugging Face ✅ Smart Search & Knowledge Retrieval: ▪ RAG (Retrieval-Augmented Generation) – Standard RAG pipelines ▪ GraphRAG – Graph-based knowledge retrieval for complex relationships ▪ Multi-Vector RAG – Dense & sparse retrieval combination for improved precision ▪ Hybrid Search RAG – BM25 + Dense Embeddings for enhanced document ranking ▪ Modular RAG Architectures – Customizable RAG systems with iterative optimization ▪ Vector & Graph Databases – FAISS, Pinecone, Weaviate, ChromaDB, Neo4j ✅ LLM Models & APIs: ▪Open-Source Models: Llama (Meta), Phi (Microsoft), Mistral ▪API-Based Models: OpenAI (GPT-4o), Anthropic (Claude), AWS Bedrock, Azure OpenAI ✅ n8n & No-Code Workflow Tools – FlowiseAI, Langflow, Make.com, Zapier ✅ Model Context Protocol (MCP) 🔹 Full-Stack Web Development ✅ Frontend: React.js, Next.js, Gatsby, Vue.js, Quasar, Nuxt.js, Tailwind CSS ✅ Backend: Django, FastAPI, Node.js, NestJS, KoaJS, Hapi.js, Strapi, Laravel, Laminas, Symfony ✅ Database & Storage: PostgreSQL, MySQL, Redis, MongoDB, Firebase Realtime DB 🔹 CRM Development & Integrations ✅ CRM Setup & Customization – HubSpot, Salesforce, Zoho CRM, Odoo, Pipedrive, Monday.com, ClickUp, Asana, Trello ✅ Email & Marketing Automation – SendGrid, Mailchimp API, ActiveCampaign ✅ Customer Support & Ticketing Systems – Freshdesk, Zendesk API, Twilio, WhatsApp API 🔹 Mobile App Development ✅ Dart & JavaScript/TypeScript – High-performance mobile development with Flutter (Dart) & React Native (JS/TS) ✅ Authentication & Security – Firebase Auth, OAuth, JWT ✅ API Connectivity – REST, GraphQL, WebSockets 🔹 Cloud & Security ✅ Cloud-Native Deployments: AWS (Lambda, Bedrock, EC2, S3), GCP, Azure ✅ Monitoring & Performance Optimization: Prometheus, Grafana, OpenTelemetry, Sentry 3️⃣ Industry Experience 🔹 Healthcare & Medical AI Solutions ▪ AI-powered clinical workflows, claims processing & automated patient support 🔹 Education – E-learning platforms, CRM-powered student engagement solutions 🔹 Insurance & Risk Management ▪ Intelligent claims automation, AI-driven risk profiling & fraud detection 🔹 Real Estate – AI-powered lead tracking, property management, and smart CRM apps 🔹 Retail & E-Commerce – AI-driven sales optimization, secure payment integration 💡 Let’s discuss your vision and build a next-gen solution for your business! 🚀
    Featured Skill Flutter
    Retrieval Augmented Generation
    Large Language Model
    Make.com
    n8n
    Laravel
    Node.js
    React
    FastAPI
    PHP
    JavaScript
    Python
  • $49 hourly
    • 5.0/5
    • (11 jobs)
    I'm a seasoned software engineer with over 15 years of experience in software development. I'm well-versed in various programming languages, such as TypeScript, NodeJS, Python, and Java. I have already acted as Product Lead and Product Owner, leading the product conception and development using Lean Canvas, Design Sprint, refining product backlog and prioritizing user stories. ✅HTML / CSS ✅Node.js (JS / TS), Python, Java, Golang, Javascript ✅Unit & e2e testing: Jest / Mocha / Pytest / Behave / Cucumber ✅Back-end Frameworks: Express.js, Nest.js, Flask, FastAPI, Django, Spring ✅Front-end: React.js, Next.js, Redux, VueJS ✅Database: PostgreSQL, MongoDB, MySQL, CouchDB, OpenDJ (LDAP) ✅Tools: GIT, GitHub, GPG, SSH, VIM, TMUX, VS Code, +++ ✅Operating Systems: macOS, Linux, Android, iOS ✅ Auth: OAuth2.0, OIDC, SAML ✅ Software Design: DDD, Clean Architecture, Design Patterns, Micro-services architecture ✅ Plus: Cache, Micro-services, Serverless (lambda), Rabbit MQ / Apache Kafka, Docker, Kubernetes, Helm I believe that effective communication is key to successful project execution, and as a consultant, my goal is to provide you with clear, timely updates and deliverables. Feel free to reach out if you need someone who can deliver exceptional results while staying at the cutting edge of technology trends.
    Featured Skill Flutter
    NodeJS Framework
    NoSQL Database
    Node.js
    Continuous Delivery
    ExpressJS
    Continuous Testing
    OAuth
    Java
    Python
    Git
    TypeScript
    Product Backlog
    Flask
  • $15 hourly
    • 4.8/5
    • (14 jobs)
    3D artist with well-known software in maya, zbrush, substance painter and blender. using the current workflow of the market with highpoly and lowpoly. PBR texturing using the Substance Painter. Elaboration of SPDA and CCTV project with autocad.
    Featured Skill Flutter
    Python
    Substance Painter
    Blender
    Game Development
    Unity
    Pixologic Zbrush
    Game Design
    Pixel Art
    Autodesk Maya
    3D Design
    Adobe Photoshop
    Autodesk AutoCAD
  • $35 hourly
    • 4.9/5
    • (15 jobs)
    Back in 2020, I left my corporate job at IBM to focus on doing what I love, which is software development. I'm a Front-end developer by training, but, since then, I had the pleasure to work in many different applications, and expanded my knowledge base to become a Full-stack developer. My most recent work is with GoCoCo, where I act as lead developer in the Front-end (React Native), Back-end (Golang) and Infrastructure engineer (Kubernetes, MongoDB, all hosted on DigitalOcean). I've also collaborated a lot in qaul.net, an open-source chat app, with a focus of mesh-free communication. There, I act mostly as a DevOps engineer (CircleCI) and Front-end developer (Flutter).
    Featured Skill Flutter
    Android App Development
    iOS Development
    Scripting
    Mobile App Development
    Front-End Development
    Software Development
    RESTful API
    Python
    Git
    SQL
    Golang
  • $25 hourly
    • 5.0/5
    • (3 jobs)
    Experience in developing web, mobile and cloud configurations Aws. Some projects: - Quiz Aprendizado (Available on the Play Store) - Instatik (Available on the Play Store) - Panda Page Builder (Laravel App) - Corra Bolinha PRO (Available on Play Store)
    Featured Skill Flutter
    Amazon ECS
    Twitter/X Bootstrap
    Amazon Lightsail
    UIKit
    PHP
    Laravel
    Semantic UI
    Angular
  • $45 hourly
    • 4.4/5
    • (5 jobs)
    Hello! I am Douglas Bezerra Possas, a development enthusiast with over 15 years in the industry, and since December 2018, I have focused my passion on the mobile world, particularly with the Flutter framework. - Experience as Technical Leader As a technical leader at Grupo Primo, I had the honor of guiding the conception and development of three innovative applications: - Finclass A groundbreaking app that teaches investments and financial management through videos, featuring the biggest names in the financial world. - Staage Leading the development of Staage, I contributed to creating an educational marketing platform with videos from renowned national references. - Staart I developed Staart, an app dedicated to empowering development professionals with advanced technology knowledge. - Highlighted Technical Skills Flutter specialist, proficient in state management using mobx, BLoC, ValueNotifier, and RxNotifier. Experience in creating components based on UX prototypes. Consistent work with MVC, Clean Arch, and MVVM patterns. - Current Experience Currently, I am remotely engaged with a Brazilian company in the financial sector, leading a team of 6 developers. In collaboration with UX professionals and Backend developers, I align Product Owner expectations and develop high-quality solutions. - Fullstack Background My experience extends beyond Flutter; previously, I worked as a fullstack developer, using a variety of technologies such as Java, JavaScript, HTML, Ruby On Rails, and various relational databases. I look forward to bringing my experience and passion to your project. Let's turn your ideas into reality!
    Featured Skill Flutter
    Laravel
    User Authentication
    RESTful API
    Mobile App
    Firebase
    JavaScript
    PHP
    HTML
    Dart
  • $35 hourly
    • 0.0/5
    • (0 jobs)
    Hi! My name is Mateus and I'm a passionate software developer! I am a highly motivated and results-oriented Software Engineer seeking a challenging position where I can leverage my skills in full-stack programming, information technology, problem-solving, project management and analysis to design, build, and deploy high-quality applications. An engineer who's experienced in collaborating with stakeholders to translate business needs into functional solutions, ensuring projects meet deadlines and budget constraints. There are some projects I contributed on that are not listed in Upwork. Please feel free to visit my GitHub profile to check out my ongoing and completed projects.
    Featured Skill Flutter
    Amazon S3
    MySQL
    Git
    Angular
    Microsoft SQL Server
    Next.js
    Python
    PostgreSQL
    Azure DevOps
    Spring Boot
    TypeScript
    Firebase
    ASP.NET MVC
    React Native
  • $50 hourly
    • 0.0/5
    • (0 jobs)
    As a Software Engineering Manager at Kepha Venture Builder, I lead a team of 40+ specialists across all areas of technology, including Backend, Frontend, Mobile, Architecture, UI/UX Design, Project Management, and Web Scraping. At Kepha, we provide end-to-end software development solutions, guiding projects from ideation to scalable deployment. Whether you're launching a startup or enhancing an existing product, we bring technical excellence and strategic insight to drive success. Let’s build something impactful together! 🚀 kepha.com.br Kepha offers a comprehensive suite of services, including business conception, custom software development, and strategic co-creation, to transform ideas into viable and scalable businesses. Our multidisciplinary team integrates technology, knowledge, and connections to support entrepreneurs, startups, and corporations throughout their innovation journey.
    Featured Skill Flutter
    UI/UX Prototyping
    Software Architecture
    API Integration
    Mobile App Design
    Firebase
    Database
    React
    Java
    Back-End Development
    Mobile App Development
    Front-End Development
    Software Development
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