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Hire the best Firebase Developers in Serbia

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  • $150 hourly
    • 5.0/5
    • (13 jobs)
    Stop Losing Users. Start Growing. 😡 Tired of users dropping off after just a few days? 😡 Spending a fortune on marketing… only to watch them vanish? 😡 Struggling to scale because your CAC is rising and LTV is stuck? Hey, I'm Dimitry — Founder of Behavio Group, where we help companies increase retention, reduce churn, and skyrocket LTV using proven behavioral design and cognitive science. No fluff. No theory. Just results. 🎯 Minimum 27% increase in user retention. Guaranteed. Over the past 10+ years, I’ve helped apps and platforms — from scrappy startups to government institutions — unlocking massive engagement and growth using psychology-backed strategies. I've earned #1 awards from Ubisoft, PlayStudios, Nordeus, and more. Clients routinely go from: ❌ 90% user drop-off in 30 days ❌ Low conversion rates and high CAC ❌ Features that users never use To: ✅ Viral campaigns (20M+ views, +1100% sales boost) ✅ Tangible LTV increases and Series A fundraising ✅ Users who actually come back daily You’re a great fit if... ✅ You're tired of rookie mistakes and want real expertise ✅ You value outcome-first design, not just pretty screens ✅ You want fast implementation with no BS or jargon ✅ You’re ready to scale but your users aren’t sticking What working with me feels like: 🧠 A partner who thinks strategically like a founder 💻 A developer who can actually implement what’s designed 📈 A behavior scientist who moves key metrics, not just pixels 📅 On-time, every time — clear process, no hand-holding required 💬 Constant updates, rapid feedback loops, and smooth execution “Working with him has been an absolute game-changer. He’s gone above and beyond the scope, 10/10.” — Ruth G, Founder @ Sersha AI “Dimitry is highly capable, incredibly smart, and a pleasure to work with. You won't regret hiring him.” — Jason G, Martians Universe Ready to turn your users into loyal customers who stay, spend, and refer? Let’s talk. 💬
    Featured Skill Firebase
    Product Design
    Gamification
    JavaScript
    Unity
    Front-End Development
    AR & VR Development
    Game Development
    Android App Development
    HTML
    Bootstrap
    CSS
  • $40 hourly
    • 5.0/5
    • (10 jobs)
    Full Stack Developer with solid technical background in the planning, design, development and deployment of mobile and web applications. Managed several mobile and web projects over the years, bringing valuable input to increase revenue and user engagement. If you want A+ quality mobile and web solutions, please pick up me. My goal is to make sure that my clients are 100% satisfied with the work that I perform and that their apps are built to increase usability, revenues, and user experience. I strive to provide the highest quality products and build long-term relationships with the clients. Mobile know-hows • Languages: Java, Kotlin, Objective-C, Swift, Javascript, C#, C/C++ • Hybrid development (React Native, Flutter) Web know-hows • Languages: Javascript, PHP, Python, HTML, CSS, JQuery • Frameworks: React.js, Vue.js, Laravel, Django, Webpack Backend know-hows • Node.js, Java, PHP, Python • API development (REST & GraphQL) • Design and Implementation of Database (MySQL, PostgreSQL, Firebase Realtime Database, Firestore, SQLite, MongoDB) I am available for full time (24/7) and ready to start immediately. Feel free to contact me at any time. Thanks.
    Featured Skill Firebase
    Mobile App Development
    React Native
    Objective-C
    GraphQL
    Python
    PHP
    Java
    Node.js
    React
  • $40 hourly
    • 4.9/5
    • (3 jobs)
    As an experienced Flutter developer with over 5 years of experience, I specialize in building high-quality mobile apps for both iOS and Android platforms. With a strong background in both Flutter framework and Dart programming language, I am passionate about creating elegant, intuitive, and scalable apps that meet the needs of modern businesses. Throughout my career, I have worked with a variety of clients and industries, from small startups to large corporations. My expertise includes developing custom mobile apps, integrating third-party APIs, and building complex UI/UX designs. I am also proficient in using Firebase for backend development and integrating payment gateways into mobile apps. What sets me apart as a Flutter developer is my attention to detail, focus on quality, and ability to deliver projects on time and within budget. I am committed to working closely with my clients to understand their needs and goals, and to provide them with innovative solutions that meet their specific requirements. If you're looking for a skilled Flutter developer who can deliver top-notch mobile applications, then look no further! Let's discuss your project requirements and get started. What I can do for you: ✅ Expert Mobile Architect Flutter (TDD, DDD) ✅ Flutter State Management (Getx, Provider, Bloc, RxDart, Riverpod) ✅ Offline Mode using local DataSource ( Hive | SQFLite | SharedPref ) ✅ Publish +10 Apps in my career on Google Play & AppStore ✅ CI/CD pipeline TestFlight / App Test(Firebase) & AppStore/PlayStore ✅ - Firebase integration - Authentication, Cloud Messaging (push notifications), Crashlytics, Analytics, Firestore Database. ✅ Worked using Agile (Scrum Methodology) with the latest tools (Trello - JIRA - ClickUp - CodeMagic - Git - Slack ..etc) ✅ Online sync / Caching ✅ GraphQL / REST API ✅ Android development (Kotlin/Java) - Jetpack Compose ✅ Worked as a team leader using Agile (Scrum Methodology) with the latest tools (Trello - JIRA - ClickUp - CodeMagic - Git - Slack ..etc) ✅ Understanding Patterns: MVC, MVVM, Delegate, Notification ✅ Singleton, Clean architecture, Dependency Injection ✅ Multi Threads App (Excellent Speed & Stability from the lowest device to the good ones) ✅ Unit testing / Mockito
    Featured Skill Firebase
    FlutterFlow
    JetPack
    Mobile App
    Android SDK
    Android App Development
    Mobile App Development
    Firebase Cloud Firestore
    Java
    Kotlin
    Dart
    Android
    iOS
    SwiftUI
    Flutter
  • $45 hourly
    • 5.0/5
    • (3 jobs)
    I am a flutter developer with a Bachelors degree in software development, graduated on the faculty of technical sciences, in Serbia. I have 5 years of experience in flutter development, and in these 5 years i've had the opportunity to work with many different teams, ranging from big teams from a corporation to smaller teams in agencies. This experience makes me flexible and very easy to fit in to any environment. I excel at communicating complex technical concepts in a clear and collaborative way, making it easier to work effectively with both technical and non-technical teams. My strong problem-solving skills and adaptability allow me to quickly respond to challenges and contribute to efficient, user-focused solutions.
    Featured Skill Firebase
    Mobile App
    Flutter
    Spring Boot
    Firebase Realtime Database
    Firebase Cloud Firestore
  • $60 hourly
    • 5.0/5
    • (8 jobs)
    Senior iOS developer: Bachelor's Degree in IT, 7+ years of experience, 20+ released iOS applications I’m an iOS developer with 7+ years of experience and a track record of building and contributing to 20+ iOS applications. I build apps from scratch, support and upgrade existing projects, and fix bugs when needed. I also work as a team lead, coordinating designers, backend developers, and QA. Expertise: – Native iOS development with Swift – API integration (REST, Firebase, Maps, Analytics) – UI implementation from Figma using SnapKit and InterfaceBuilder – Agile workflow, task management in JIRA – Bug fixing, app updates, clean architecture Project domains: – Fintech: banking and payments, card management, account features – Healthcare & Wellness: sleep and activity tracking, reminders, analytics – CRM: tools for service providers to manage clients and operations – EdTech: educational apps with interactive lessons and user progress tracking Let’s turn your idea into a high-quality app that users will love.
    Featured Skill Firebase
    Figma
    GitHub
    iPhone & iPad Apps
    iPhone UI Design
    Apple Xcode
    iOS
    Swift
    iOS Development
  • $45 hourly
    • 4.9/5
    • (10 jobs)
    ⚡ 1k+ hours. 🕰 | Since 2015 | I leveraged my expertise in software development, delivering valuable solutions and contributing to clients' projects with a focus on excellence. I have a diverse background in software development and am adept at managing all stages of the software development life-cycle, from requirements gathering to releasing on all the application stores and app maintenance. I've developed mobile applications using technologies like Flutter, React Native, and Unity, including projects in the fields of healthcare, insurance, and augmented reality. Additionally, I've contributed to web development using React.js, built RESTful APIs, integrated services like Firebase and Slack, and even explored freelance opportunities to gain hands-on experience. My skills cover a broad spectrum of languages, methodologies, and tools, making me a versatile full-stack developer ready to take on new challenges. Client-Side Technologies: React Native, Flutter, React, Unity (AR) Server-Side Technologies: Node.js, Firebase (Authentication, Realtime Database, Firestore, Storage, Cloud Messaging, Cloud Functions) Programming Languages: JavaScript, Dart, C# CI/CD Tools: AppCenter, Code Magic, Bitrise Analytics: App Insights (Microsoft), Firebase Analytics Team Organization Tools: JIRA, Trello, Azure DevOps Wireframing Tools: Balsamiq Integrations: React Native + Unity, Slack Applications Favorite Libraries: axios, Chakra UI, Native-Base, moment, react-hook-form, yup, react-query, zustand, react-native-size-matters, react-native-maps, @react-navigation, eslint Best regards, Boban Minic
    Featured Skill Firebase
    Redux
    Auth0
    Redux Saga
    OKTA
    Slack
    Mobile App Development
    User Authentication
    Review or Feedback Collection
    Node.js
    React Native
    Location-Based Service
    Push Notifications
    React
    Flutter
  • $50 hourly
    • 5.0/5
    • (17 jobs)
    👋 Hi, I'm a dedicated Software Developer specialized in building modern and interactive web and mobile applications for over 4 years in the industry. As a Top Rated freelancer on Upwork, I've completed and led multiple projects in the past. For more references check my account reviews and feedback to feel the level of quality I produce. Using technologies like React, React-Native, Next.js, and Node, I strive to deliver efficient and effective solutions leveraging industry best practices, creating seamless user experiences that are both visually appealing and highly functional. If You're Looking For: ✅ Full-Stack Mobile and Web App Development ✅ Cross-Platform Development ✅ SEO Friendly Websites using SSR and SSG technologies ✅ WordPress Website ✅ UI/UX Design ✅ Frontend Development ✅ Backend Development ✅ Database Integration ✅ Third-Party API Integration ✅ Deployment and Maintenance Or Have Questions? Feel Free to Reach Out! 📩 🔥 Skills🔥 ✅ Javascript / TypeScript / Node.js / Deno.js / HTML / CSS ✅ React / Next.js / Astro / Nest.js /Express.js ✅ React Native / Expo / Xcode / Android Studio ✅ Redux / Redux Toolkit / React Query / Zustand / Mobx ✅ Tailwind / MaterialUI / ChakraUI / CSS-in-js / SASS / Storybook ✅ Firebase / AWS / Strapi / MongoDB/ SQL ✅ RestAPIs / GraphQL / Prisma / tRPC / SSR / SSG ✅ Jest / Cypress / Detox ✅ CI/CD / Git / Monorepo Looking forward! Stefan.
    Featured Skill Firebase
    HTML
    CSS
    SQL
    MongoDB
    Tailwind CSS
    GraphQL
    ExpressJS
    Expo.io
    JavaScript
    TypeScript
    Node.js
    Next.js
    Redux
    React
  • $35 hourly
    • 5.0/5
    • (4 jobs)
    Knowledgeable 9+ Front End Developer (team lead) with a passion for web development best practices and standards. Expert in HTML and SCSS (CSS), Bootstrap (2, 3,4,5). Well-versed in Javascript, Vue.js (Nuxt.js).
    Featured Skill Firebase
    Leadership Skills
    Web Design
    Figma
    Business with 10-99 Employees
    Web Application
    Nuxt.js
    Git
    CSS
    SCSS
    Bootstrap
    Vue.js
    HTML
    JavaScript
  • $40 hourly
    • 4.6/5
    • (1 job)
    Summary * iOS developer with 2+ years teamwork experience * pet projects MVVM SwiftUI * Interested in ML, new frameworks, different architectures and their impact on projects * work-life balance to maximum performance in work
    Featured Skill Firebase
    Jira
    iOS
    Swift
    Apple Xcode
  • $60 hourly
    • 5.0/5
    • (21 jobs)
    𝗞𝗘𝗬 𝗙𝗔𝗖𝗧𝗦: ⭐ 1M+ users actively engaging with apps I’ve built. ⭐ $10M+ in annual revenue generated for businesses using my solutions. ⭐ You don't like the initial results? You do not pay! 100% Money Back Guarantee 𝐀𝐁𝐎𝐔𝐓 Hi there! Are you looking for an app with great functionality and a smooth user experience across all devices? You're at the right spot! With over 5 years of experience as Senior Full Stack Developer, I've led tech teams & built high-performing apps for both iOS, Android, Web and Desktop. My expertise lies in creating solutions for you, that users & clients love to interact with. Let's team up. You focus on your business, and I'll make sure your app is developed with great performance and features. Together, we'll craft solutions that users will adore. 𝗦𝗘𝗥𝗩𝗜𝗖𝗘𝗦 * Mobile development & design for iOS and Android. * Full Stack Web development & design for small and big screens. * Backend Development * Frontend Development * Mobile & web apps UI/UX Design * Product Requirement Gathering * Revamping poorly performing web & mobile apps. * Development of apps based on existing UI design 𝗧𝗛𝗘 𝗦𝗧𝗘𝗣𝗦 𝗧𝗢 𝗠𝗔𝗞𝗜𝗡𝗚 𝗬𝗢𝗨𝗥 𝗣𝗥𝗢𝗝𝗘𝗖𝗧 𝗔 𝗥𝗘𝗔𝗟𝗜𝗧𝗬 📝 Discovery & Design | Align expectations, define requirements, create UI, and develop a blueprint. 🏗 Development | Constant updates and feedback, clear communication throughout. 👨‍💻 QA Testing | End-to-end testing to catch any bugs before launch. 🚀 Deployment | Getting your product live, managed on your behalf. ⛑ Maintenance | Ongoing support and updates to keep your app running. 𝗚𝗢𝗔𝗟𝗦 𝗢𝗙 𝗖𝗢𝗟𝗟𝗔𝗕𝗢𝗥𝗔𝗧𝗜𝗢𝗡 ✔ Peace of Mind | Make sure your business operates smoothly with reliable software. ✔ Revenue Growth | Develop a product that leads to increased revenue. ✔ Cost Savings | Streamline processes with automation and efficiency. 𝗡𝗘𝗫𝗧 𝗦𝗧𝗘𝗣𝗦 Send me a message or invite me to your job. Let's see how I may help out, and if we're fit to work together.
    Featured Skill Firebase
    Mobile App
    React Native
    Node.js
    In-App Purchases
    JavaScript
    User Authentication
    Android App Development
    Hybrid App Development
    Mobile App Development
    User Profile Creation
    Flutter
    Android
    iOS
    Smartphone
  • $40 hourly
    • 5.0/5
    • (2 jobs)
    Hi! My name is Aleksa and I help businesses by providing consultation and development services for their iOS and Android apps. 𝐈 𝐖𝐎𝐑𝐊 𝐖𝐈𝐓𝐇 • Businesses and enterprise companies • Self-employed service providers 𝐖𝐇𝐀𝐓 𝐈 𝐎𝐅𝐅𝐄𝐑 𝐅𝐎𝐑 𝐁𝐔𝐒𝐈𝐍𝐄𝐒𝐒𝐄𝐒 𝐀𝐍𝐃 𝐒𝐄𝐋𝐅-𝐄𝐌𝐏𝐋𝐎𝐘𝐄𝐃 • Consultations regarding your iOS and Android app • Development for your iOS and Android app • Building an MVP mobile app for you from scratch in just one month • If you already have a team, but you need team extension, I cover that also 𝐑𝐄𝐀𝐒𝐎𝐍𝐒 𝐓𝐎 𝐖𝐎𝐑𝐊 𝐖𝐈𝐓𝐇 𝐌𝐄 • 26 apps successfully created and shipped to AppStore and PlayStore • Helped over 30 clients with team extension for their iOS/Android services 𝐅𝐀𝐕𝐎𝐑𝐈𝐓𝐄 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐐𝐔𝐎𝐓𝐄𝐒 "Aleksa's performance has been outstanding since he was always working self-responsibly, quickly, flexibly and reliably." "Aleksa is not afraid of asking questions and proposing solutions. He's a very good team player and really nice person. It's the type of person that every startup needs." "Working with Aleksa was pure pleasure. He helped us bring our iOS MVP application to life while constantly providing valuable ideas on how we can further improve our product." 𝐇𝐚𝐯𝐞 𝐚 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐢𝐧 𝐦𝐢𝐧𝐝? 𝐃𝐫𝐨𝐩 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 𝐭𝐨 𝐠𝐞𝐭 𝐬𝐭𝐚𝐫𝐭𝐞𝐝! 🚀
    Featured Skill Firebase
    SwiftUI
    Product Development
    User Profile Creation
    Mobile App Development Consultation
    API Integration
    Map Integration
    Native App Development
    iOS Development
    Objective-C
    In-App Purchases
    UIKit
    Swift
    iOS
    Mobile App Development
  • $55 hourly
    • 4.5/5
    • (4 jobs)
    🌟 Experienced Full-Stack Developer Specializing in React, Python, and Scalable Solutions With over 20 years of experience, I specialize in developing high-quality, efficient, and innovative software solutions. My expertise spans React and Python, along with cutting-edge technologies like AI/ML, Web Scraping, and AWS. Whether you're building a robust application or need advanced data solutions, I’m here to help you bring your vision to life. 🔨 What I Offer Core Skills & Technologies React & Front-End Development: Creating responsive, user-friendly interfaces with modern frameworks and tools. Python for Back-End & AI/ML: Building scalable back-end systems, developing machine learning models, and creating intelligent automation workflows. Web Scraping: Extracting, processing, and analyzing data at scale using efficient and reliable scraping techniques. AWS Integration: Designing and implementing secure, scalable cloud solutions to optimize performance and ensure reliability. 🔧 Key Expertise End-to-end development of full-stack applications, from concept to deployment. Hands-on experience with AI/ML algorithms for predictive analytics, natural language processing, and automation. Crafting web scraping scripts that efficiently handle large datasets and deliver actionable insights. Seamlessly integrating and managing AWS services like Lambda, EC2, and S3 for cost-effective, scalable solutions. 🎯 Why Work with Me? Proven Track Record: Successfully completed projects for startups and global brands, delivering exceptional results on time and within budget. Collaborative Communication: Fluent in English and Amharic, ensuring smooth collaboration and understanding of your requirements. Solution-Oriented: I focus on creating systems that address real-world challenges with innovative, practical approaches. Dedicated Professional: Responsive, reliable, and committed to delivering top-notch results tailored to your specific needs. 🎖️ Notable Projects Developed a machine learning-powered recommendation system for a SaaS platform. Designed and deployed web scraping pipelines to collect and analyze market trends for a retail analytics company. Built scalable full-stack applications with React and Python, optimizing performance for high-traffic environments. Implemented secure, cost-effective cloud solutions with AWS for several clients. 💬 Let’s Build Your Next Project! Whether you’re looking to create a cutting-edge web application, integrate AI/ML capabilities, or extract meaningful insights from data, I’m ready to help. Feel free to reach out or invite me to your project—let’s make it happen!
    Featured Skill Firebase
    AWS Development
    React Native
    Front-End Development
    Ecommerce
    WordPress
    Laravel
    PHP
    Web Scraping
    Machine Learning
    AI App Development
    Python
    React
    Android App Development
    Web Application
  • $45 hourly
    • 5.0/5
    • (1 job)
    Experienced Full-Stack Developer with expertise in modern web development frameworks and cloud technologies. Proficient in Next.js, Angular, React, and Vue.js for building responsive and scalable user interfaces. Skilled in backend development using Python and managing databases like MongoDB and PostgreSQL. Strong knowledge of AWS and DevOps practices, ensuring efficient deployment pipelines and robust application performance. Adept at delivering high-quality solutions tailored to meet business needs while maintaining clean and maintainable codebases.
    Featured Skill Firebase
    JavaScript
    Vue.js
    MongoDB
    Python
    React
    Angular
    Next.js
  • $35 hourly
    • 5.0/5
    • (1 job)
    I’m Srdjan, a seasoned developer with over 10 years of experience in web application and mobile development. 🌐 Frontend Development: Proficient in React.js, Next.js, Vue.js, Nuxt.js, TypeScript, HTML5, Prisma, Storybook, CSS3, Bootstrap, Tailwind CSS, MUI (Material UI), and AntD (Ant Design). Skilled in building responsive, user-friendly interfaces that enhance engagement and user experience. 🖥 Backend Development: Experienced in Node.js, Express.js, GraphQL, Python, Django, FastAPI, Flask, Laravel (PHP), Java, and Spring Boot. Focused on developing efficient, scalable backend solutions for high-performance applications. 🗄 Database Management: Expertise in MySQL, MongoDB, Postsql, and Firebase. Ensuring robust and optimized data management to support complex application needs. 🔧 Advanced Technologies: Strong knowledge of Redux, Vuex, Pinia, Vuetify, PrimeVue, and BootstrapVue for state management and UI development. Leveraging these tools to enhance application performance and maintainability. Very familiar with Microservices & Micro frontends architecture. With expertise in frontend, backend, databases, and advanced technologies, I develop high-quality, scalable solutions across multiple tech stacks, including Python, Java, PHP, and JavaScript ecosystems. I thrive on tackling complex challenges with confidence and precision.
    Featured Skill Firebase
    WordPress
    PHP
    Laravel
    GraphQL
    FastAPI
    Django
    Python
    ExpressJS
    Node.js
    TypeScript
    Vue.js
    Angular
    Next.js
    React
  • $35 hourly
    • 4.8/5
    • (2 jobs)
    Front-end Developer – React & Next.js Focus | Clear, Reliable Communication Hi, I’m Mladen, a former English-language professor turned dedicated front-end engineer with 4 years of professional experience, crafting fast, accessible, and visually polished web interfaces. What I deliver - Production-ready React / Next.js front-ends, using TypeScript, TailwindCSS, and modern data-fetch patterns (React Query/SWR) - Pixel-perfect UI implementation from Figma/XD, fully responsive and accessible (WCAG-AA) - Maintainable state management (React Context, Zustand, TanStack Query, Redux Toolkit when needed) - Robust component testing with React Testing Library & Vitest/Jest - Smooth collaboration with backend/API teams and clear, well-written documentation Why hire me 1. Crystal-clear English. Linguistics background = zero ambiguity in specs, tickets, or docs. 2. Timezone sweet spot. Based in Serbia (UTC + 2) with 3–6 h overlap to both US & EU teams. 3. Proactive problem-solver. I spot edge cases early and suggest pragmatic, budget-friendly fixes. Core tech stack React • Next.js • TypeScript • TailwindCSS • React Query • Zustand • Jest/Vitest • Cypress • Git/GitHub/GitLab CI • Vercel/Netlify Let’s turn your UI ideas into performant, maintainable code. Send over your project brief and I’ll reply within one business day.
    Featured Skill Firebase
    English to Serbian Translation
    Creative Writing
    Jest
    Redux
    CI/CD
    Git
    Material UI
    styled-components
    HTML5
    CSS
    Sass
    Tailwind CSS
    Next.js
    JavaScript
    TypeScript
    React
  • $45 hourly
    • 5.0/5
    • (6 jobs)
    Web & Mobile developer with 8+ years experience in this industry. Primary focused on Front-End but able to maneuver in various environments. Always striving for excellence and delivering pixel-perfect products. I can handle all stages of delivering your software; from discovery, to wireframes & design, to code implementation and testing. Interested? Let's talk!
    Featured Skill Firebase
    Ionic Framework
    Mobile App Development
    Web Development
    Node.js
    React
    MongoDB
    AngularJS
    Java
    JavaScript
  • $130 hourly
    • 5.0/5
    • (27 jobs)
    I am an experienced full-stack developer able to build any kind of project from the ground up. I have been focusing mostly on React, React Native and Node (Express JS). Skilled at writing well-designed, testable and efficient code using current best practices. I am hard-working and responsible person, able to work by myself or in a team. ✅ Excellent knowledge of JavaScript / ES8 ✅ More than 4 years in web development ✅ AWS Certified Developer – Associate ✅ High-quality code with good documentation List of my strongest skills: 🔸 Program languages: JavaScript 🔸 Frameworks: React, React Native, Express, 🔸 Databases experience: MongoDB, Redis, MySQL, PostgreSQL, DynamoDB, Firebase 🔸 Test tools: Jest Notable Projects: 💎Procore (React) - World's Leading Construction Management Software 💎Home2Market (React, Node) - SaaS used by real estate agents in US to help them manage their listings 💎Love Wall (React Native, Node) - Built both backend and frontend for this mobile social network app (links in porftolio) 💎 Nifty (React, Node) - Worked in a team (primarily on backed) for this complex project management SaaS
    Featured Skill Firebase
    Redux
    Amazon Web Services
    Serverless Computing
    React Native
    MongoDB
    JavaScript
    ExpressJS
    Node.js
    React
  • $40 hourly
    • 4.8/5
    • (57 jobs)
    ✅ Upwork Top Rated Plus & Verified Mobile Developer As an expert developer with 10+ years of experience in mobile application development, one of my most-respected qualities is the ability to find solutions to any problem. In addition, I am committed to open and ongoing communication with my clients, as this is key to every successful project. All of my projects have contributed to the growth and development of my clients’ businesses and significant increases in their profits. Flutter Skills: Bloc, Riverpod, Go Router, RxDart, GetIt, Pusher, Stacked, Dio, Mobx Android Skills: Kotlin, Java, RxJava, Dagger2, ButterKnife, LiveData, DataBinding, Room, OKHttp, Retrofit, Volley. My advantages: • World-class quality and experience • 24/7 support • Bug-free guarantee through comprehensive testing • Timely delivery • Scalable and clean architecture • 100% money-back guarantee
    Featured Skill Firebase
    Android App Development
    Java
    Kotlin
    iOS Development
    Dart
    NFC
    Flutter
    Smartphone
    Objective-C
    Swift
    Android
  • $40 hourly
    • 4.6/5
    • (7 jobs)
    I'm Front End developer with more then 5 years of experience, I have very good knowledge of the Angular, Ionic, Svelte, NodeJS, Express, MongoDB, HTML, CSS3, and JavaScript Programming language and I am able to create all the things your website needs. If needed, I can also integrate with an already existing website. Additionally, I am fluent with English. I have worked in depth with Angular, Express, NodeJs, Ionic. MongoDB, React, NgRx, RxJs, JavaScript, HTML, CSS, and i am able to create all website ideas come to life. I have also worked with chrome extensions and have good experience. I absolutely love speaking with people and I am willing to accommodate to your needs so that we can get set on a solution that will bring your idea to a reality. OPEN TO ANY OFFERS, FEEL FREE TO ASK ME IF YOU NEED SOMETHING DONE AND WE WILL WORK TO COMPLETE IT!
    Featured Skill Firebase
    English
    Amazon Web Services
    React
    Angular
    Tailwind CSS
    TypeScript
    JavaScript
    RxJS
    Google Chrome Extension
  • $40 hourly
    • 4.6/5
    • (4 jobs)
    Hello there! My name is Hrvoje Benčik and I am making applications for Android and iOS using Flutter. After more than 5 years of successfully building applications using this framework I am still loving it and always looking to improve and learn new things. My biggest strength is passion for what I am doing. Throughout my experience I learned how to be a good team player and how to work on bigger projects from many diverse areas. During my experience with Flutter I had opportunity to work on projects from many different areas, some of them are really big applications used in medicine, public transport and fintech. Technologies I am using: -Flutter/Dart -Firebase(Firestore, Storage, Cloud Functions, Push Notifications) - Supabase - Swift/iOS - Git/GitHub/BitBucket - MySQL
    Featured Skill Firebase
    Mobile App
    iOS Development
    Swift
    Mobile App Development
    FlutterFlow
    Flutter
    Java
    Firebase Cloud Firestore
    HTML5
    SQLite
    Firebase Realtime Database
    JavaScript
    Dart
  • $20 hourly
    • 4.9/5
    • (19 jobs)
    Email marketing automation specialist with over 3 years of experience in working with Mautic. I will import contats, create segments, email temlpates, landing pages, campaigns, forms, or help you install and configure Mautic on your server.
    Featured Skill Firebase
    Redux
    LAMP Stack
    Mautic
    AWS Amplify
    AWS CodeDeploy
    Amazon Cognito
    Node.js
    TypeScript
    webpack
    RxJS
    PrimeFaces
    Angular Material
    Angular
  • $20 hourly
    • 5.0/5
    • (4 jobs)
    Android Native Developer with 3+ years of experience. My uttermost goal is to provide a clean, maintainable code to my customers within the agreed time frame. Very patient and flexible when it comes to changes that client possibly wants me to conduct. My skills include: Android Studio, Kotlin, Java, MVVM, Firebase, Retrofit, XML, Jetpack Compose, Dagger Hilt, Dagger, Java RX, Kotlin Coroutines, Rest API, Room database, CI/CD, Clean Architecture I am eager to meet your expectations to the fullest.
    Featured Skill Firebase
    Material Design
    Model View ViewModel
    API
    XML
    Android App Development
    Java
    Retrofit
    Kotlin
  • $20 hourly
    • 5.0/5
    • (2 jobs)
    I'm a dedicated frontend developer with a proven track record of building dynamic, responsive, and user-friendly applications. My experience includes collaborating on web-based projects across diverse industries, from education to retail, with a strong focus on enhancing user experience and optimizing performance. My passion for aesthetics and UI design drives me to deliver beautiful, intuitive interfaces. I’m a quick learner, adaptable, and committed to providing top-notch solutions that meet business needs. Skills: React | Redux | Material UI | SCSS | Tailwind CSS | GraphQL | Context API Strong understanding of responsive design and frontend optimization Focused on creating clean, maintainable, and efficient code Highly motivated to tackle complex challenges and constantly improve Notable Projects: 🎮 Pando Mission Control – Gaming Industry Publishing Platform Developed a comprehensive interface to give gaming industry publishers control over their IP value chain, including key management, SKU automation, pricing, and content management across global markets. Integrated data insights in real time and ensured secure partner access with automated lifecycle processes for maximum efficiency. Tech stack: Angular, PrimeNG, NgRx, RxJS 🏫 Ayn Rand Educational Platform Developed pages and components using HeadlessUI, Tailwind CSS, and Redux Toolkit. Enabled students to connect and share knowledge in a collaborative digital environment. Tech stack: React, Tailwind, HeadlessUI, Redux Toolkit 📊 Data Do Business Forecasting App Built responsive Material UI tables with custom components, leveraging Redux for optimized state management and data caching. Enhanced the app’s performance for better user interaction and data handling. Tech stack: React, Material UI, Redux, SCSS 🌐 Deversity Company Website Utilized fullPage.js with React to create a fully responsive and visually appealing site showcasing company projects and skills. Contributed to both the visual and functional aspects, resolving challenging CSS issues. Tech stack: React (Class-based), SCSS, fullPage.js 🏆 Maxi Pustolovina Game App for Delhaize Group Serbia Developed the entire HTML and CSS, ensuring the app was responsive and engaging for users on all devices. Implemented optimized performance with React Hooks, Context, and Axios. Tech stack: React, SCSS, Context API 🌴 Dream Teamers Vacation Tracking App Built a user-friendly vacation request page, incorporating Material UI, Redux, and GraphQL to streamline functionality. Helped employees easily book and manage vacation requests. Tech stack: React, Material UI, Redux, GraphQL With each project, I bring a positive, can-do attitude and a commitment to continuous learning. I'm excited to take on more complex projects and contribute to your team!
    Featured Skill Firebase
    Front-End Development
    Tailwind CSS
    AngularJS
    Material UI
    React
    Responsive Design
    Redux
    SCSS
    CSS
    JavaScript
    HTML
  • $20 hourly
    • 5.0/5
    • (4 jobs)
    🚀 As a seasoned Android Developer with over five years of dedicated experience, I specialize in transforming innovative ideas into high-performance, user-friendly mobile applications. My expertise lies in crafting scalable solutions with clean, maintainable code, ensuring your project not only meets but exceeds expectations. Technical Proficiencies: ⚬ Kotlin, Java, Python, C# ⚬ Jetpack Compose, Android SDK, Firebase, GraphQL, Material UI ⚬ Modern architectural patterns (MVVM, Clean Architecture), CI/CD, Gradle, GitHub ⚬ REST APIs, third-party services, real-time data handling 💬 Clear communication is essential in my workflow. I will provide regular updates and engage proactively throughout the project, creating a collaborative atmosphere where ideas thrive and solutions are tailored to your needs. 🤝 Let's collaborate to bring your vision to life with cutting-edge Android applications that stand out in today's competitive market!
    Featured Skill Firebase
    C#
    Kotlin
    Java
    Python
    Android
    Smartphone
    Android App Development
    Mobile App Development
    Native App Development
  • $30 hourly
    • 5.0/5
    • (6 jobs)
    As a Web Guru, I bring 8 years of experience and expertise in developing and managing websites. My skills range from front-end development using HTML, CSS, and JavaScript to back-end development with frameworks like Node.js and Django. Additionally, I have experience with database management and optimization, API development, and web security. I pride myself on staying up-to-date with the latest web technologies and trends to ensure that my clients receive the best possible solutions for their needs. I have worked with businesses of all sizes, from startups to large corporations, and have a proven track record of delivering high-quality results within budget and on time. In addition to my technical skills, I am a strong communicator and collaborator. I believe in open communication and transparency to ensure that my clients are informed and involved throughout the development process. I also enjoy mentoring and teaching others and have experience leading development teams and providing training and support to junior developers. Whether you need a new website built from scratch, an existing site updated and optimized, or ongoing support and maintenance for your web presence, I have the skills and experience to help you achieve your goals. Thank you - PHP, Python, Javascript, Typescript, Dart - React.Js(Next.Js, Gatsby.Js, Remix.Js), React Native, Angular, Vue.Js, Flutter - MUI, Antd, Tailwind-css, GraphQL, Redux, - Nest.Js, Django, Laravel - Mysql, MongoDB, PostgreSQL, - Shopify, Big Commerce, WooCommerce - Oracle Netsuite, ERP, CRM, Suitescript. - AWS(Ec2, S3, SES, Amplify, Cognito), GCP, Firebase
    Featured Skill Firebase
    Azure OpenAI Service
    React Native
    Shopify
    Node.js
    MongoDB
    MySQL
    AWS Server Migration
    Oracle NetSuite
    NestJS
    React
    Next.js
    JavaScript
    ChatGPT
    Python
  • $40 hourly
    • 0.0/5
    • (0 jobs)
    I’m a no-code/low-code developer, have experience with a lot business domains and strong skills with third party API
    Featured Skill Firebase
    Llama 3
    AI Builder
    n8n
    Supabase
    FlutterFlow
    Mobile App
    ExpressJS
    Progressive Web App
    Node.js
  • $30 hourly
    • 4.9/5
    • (6 jobs)
    Experienced Android Developer with over 10 years of expertise in building high-quality mobile applications. Skilled in Kotlin and Java, I have successfully completed 6+ projects, leveraging my strong knowledge of Android SDK, Android Studio, and various architectural patterns like MVP and MVVM. I am currently expanding my horizons by diving into Flutter and Dart, exploring the realm of cross-platform app development. Proficient in working with SQLite and Room for database integration, I also possess hands-on experience with Firebase, including Crashlytics and App Distribution. With a solid understanding of REST API integration and data formats like JSON, I excel in creating robust mobile solutions. Additionally, I have leveraged RxJava, Dagger, and Git to enhance application performance and maintain version control. My goal is to deliver exceptional user experiences through intuitive interfaces and efficient code. Let's collaborate to transform your ideas into innovative Android applications.
    Featured Skill Firebase
    RxJava
    Model View ViewModel
    Model View Presenter
    JSON
    Git
    Room
    RESTful API
    Dagger 2
    Dart
    SQLite
    Flutter
    Java
    Android App Development
    Kotlin
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