Hire the Best Firebase Developers
in the United Kingdom

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Abdul S.

London, United Kingdom

$20/hr
5.0
45 jobs

Flutter and FlutterFlow Developer for Startups | Firebase, Supabase, Full App Store Deployment | M.Sc. Computer Science (London) Need a mobile app built properly clean code, real performance, shipped on time? That's my speciality. I'm a Flutter and FlutterFlow developer with 4+ years of experience and an M.Sc. in Computer Science from London. I work with startups and growing businesses who need cross-platform mobile apps that actually hold up in production not just demos. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ WHAT I BUILD ▸ Flutter apps (iOS and Android) from Figma to App Store ▸ FlutterFlow MVPs for rapid validation and investor demos ▸ Firebase and Supabase backends with real-time sync ▸ REST and GraphQL APIs with Node.js, Spring Boot and FastAPI ▸ Performance refactors and Clean Architecture overhauls ▸ Full CI/CD pipeline setup and App Store deployment ▸ AI-powered features chat, automation and smart workflows ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ RESULTS I HAVE DELIVERED ▸ Refactored legacy app to Clean Architecture crash rate down 65% ▸ Migrated Firebase to Supabase with zero downtime and real-time sync ▸ Cut development time by 30-50% using AI-assisted workflows ▸ Shipped production apps across fintech, health and e-commerce ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ CORE TECH STACK Mobile: Flutter, FlutterFlow, React Native (Expo) State: BLoC, Riverpod, GetX, Provider Backend: Node.js, Spring Boot, FastAPI, Buildship Databases: Firebase, Supabase, PostgreSQL, MongoDB DevOps: AWS, GitHub, CI/CD, App Store, Play Store Design: Figma to Flutter, Animations, Responsive UI AI Tools: AI-assisted coding, UI generation, API scaffolding Arch: Clean Architecture, MVVM, MVC ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ HOW I WORK 1. Discovery call — understand your goals and constraints 2. Structured sprints — with updates every step of the way 3. QA and testing — before anything ships 4. Deployment and handoff — App Store ready and documented ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 4+ years, 20+ apps launched, 3500+ hours, M.Sc. CS London, B.Sc. Software Engineering Message me with what you are building I will give you an honest answer on timeline, fit and cost.

  • Firebase
  • Flutter
  • Node.js
  • Android App Development
  • iOS Development
  • FlutterFlow
  • UI/UX Prototyping
  • Responsive Design
  • Mobile App
  • Desktop Application
  • Figma
  • Flutter Stack
Awais A.

Barking, United Kingdom

$20/hr
5.0
42 jobs

🚀 𝗔𝗩𝗔𝗜𝗟𝗔𝗕𝗟𝗘 𝗧𝗢 𝗦𝗧𝗔𝗥𝗧 𝗧𝗢𝗗𝗔𝗬! 🔝Top 1% Talent on Upwork⚡️Updated daily ⚡️Fast task completion ⚡️Flexible work schedule ⚡️High-quality results ⚡️Increase in conversion 🥇 7-Years of experience as React, Next.js React Native & Expo App Dev As a successful team leader, I'm providing my technical and management skills to my team members wherever needed. I build 50+ high-performance React Native mobile apps for iOS and Android and production-ready 100+ web applications using React, Next.js, Vue.js, Angular TypeScript, Ember.js, and JavaScript, backed by scalable Node.js, AWS, and Python APIs and cloud infrastructure. Over the past 7+ years I have worked on apps that include: -AI-powered mobile and web applications using OpenAI, Gemini, and LLM APIs -Real-time apps with WebRTC, push notifications, and live updates -Scalable backend systems with Node.js, Express.js, AWS, RESTful API, and PostgreSQL -Secure authentication and KYC integrations (Clerk, Jumio, Onfido) -Payment systems with Stripe and subscription models -Mapping, location services, and logistics platforms using Google Maps & Mapbox -Responsive web dashboards, admin panels, and SaaS platforms using React, & Next.js, Vue, Ember.js -SEO-optimized landing pages and marketing sites with Next.js and TypeScript No‑code / AI‑assisted app: I transform prototypes from Base44, Bubble, FlutterFlow, Adalo, AppyPie, Glide, and Zite into fully native Android and iOS apps or high-performance web applications with push notifications, Stripe payments, API integrations, and a serverless backend. Ready for launch in just 10 days. My skills set: Mobile: React Native, iOS, Android Frontend: React, Next.js, Ember.js, Vue, Angular, TypeScript, Tailwind CSS Backend: Node.js, Express, AWS, Python, RESTful API Databases: PostgreSQL, MongoDB, Supabase, Firebase, Redis AI & ML: OpenAI API, Gemini, Anthropic, TensorFlow, Vector DBs (Pinecone, Weaviate, Qdrant) Cloud & Tools: AWS, Vercel, GitHub, CI/CD I believe myself quite an expert in programming, and I learn things very quickly. If you're building a mobile app, web platform, AI product, SaaS platform, or scalable backend, I can help you move from idea to production. Send me a message and Let's discuss how I can contribute to your project. GitHub: Awais-514

  • Firebase
  • Mobile App Development
  • React Native
  • Node.js
  • Web Development
  • React
  • Next.js
  • API Integration
  • AI App Development
  • ChatGPT API Integration
  • JavaScript
  • RESTful API
  • Supabase
  • User Authentication
  • CI/CD
  • Python
  • Ember.js
  • Stripe API
  • AWS Lambda
  • Amazon Web Services
Abdul Hanan M.

Mansfield, United Kingdom

$14/hr
5.0
1 jobs

Hi, I’m Abdul Hanan Majeed, a Full Stack Web and Mobile App Developer with a Computer Science degree from De Montfort University in the UK. I build modern websites, web apps, mobile apps, admin panels, APIs, and backend systems. My main focus is creating clean, practical, and scalable solutions. I have worked on different types of projects, including real estate platforms, food delivery apps, e-commerce systems, AI-powered tools, admin dashboards, and mobile applications. I have worked both in teams and independently, and I am comfortable taking a project from the planning stage through development, testing, and deployment I can help you with: * Full Stack Web Development * Mobile App Development with React Native / Expo * Admin Panels and Dashboards * Backend API Development * Django REST Framework / Node.js / PHP Backends * Next.js and React.js Websites * E-Commerce and Marketplace Platforms * Food Delivery / Takeaway Apps * Real Estate Websites and Property Portals * SaaS and MVP Development * AI Features and OpenAI API Integration * Firebase Authentication, Firestore, and Push Notifications * Stripe Payment Integration * WebSocket and Real-Time Notification Features * Database Design and API Integration * Deployment on Vercel, DigitalOcean, Docker, or VPS My main skills include: Frontend: React.js, Next.js, JavaScript, TypeScript, HTML, CSS, Tailwind CSS, Bootstrap Mobile: React Native, Expo, Firebase, Push Notifications, Android/iOS app structure Backend: Django, Django REST Framework, Node.js, PHP, ASP.NET, REST APIs Databases: PostgreSQL, MySQL, MongoDB, Firebase Firestore, SQLite Tools: Git, GitHub, Docker, DigitalOcean, Vercel, Postman, Linux server setup AI: OpenAI API, AI resume builders, chatbots, recommendation features, automation workflows Some of the projects I have worked on include: DubaiHaus – Real Estate Platform A multilingual real estate platform for Dubai and Abu Dhabi, built with Next.js, Prisma, PostgreSQL, and an external property API. I worked on performance, SEO structure, property pages, area pages, API integration, and scalable frontend/backend planning. Curry Pizza Knights – Food Delivery App A food delivery/takeaway mobile app using React Native, Expo, TypeScript, and a Django backend. The project includes menu browsing, cart system, checkout flow, product detail pages, admin panel planning, notifications, and future payment integration. SkyResume – AI Resume Builder An AI-powered resume builder where users can create resumes with AI, preview templates, edit content, and generate professional CVs. E-Commerce Platform A full-stack e-commerce system with products, vendors, carts, orders, reviews, promotions, authentication, and payment flow planning using React and Django REST Framework. Carpooling Mobile App A mobile app concept for matching drivers and passengers based on routes, locations, and trip details. I have also worked on several other university projects, which helped me build a strong foundation in software development, database design, backend logic, frontend development, and problem-solving. Why work with me? Although I am new to the freelancing market, I am not new to development. I have worked on real projects, both individually and in teams, and I understand how to plan, build, test, and improve software properly. I may be building my Upwork profile from the beginning, but I bring real development experience, honest communication, and a strong commitment to delivering quality work. I write code that is clean, easy to maintain, and structured properly. I try to keep the frontend, backend, business logic, and database logic well organized, so the project is easier to scale, update, and debug in the future. I can work on both frontend and backend, so I understand how the full system connects together. I am also comfortable explaining technical things in simple language, giving regular updates, and working in an organized way using GitHub, tasks, and proper project planning. If you need a website, mobile app, admin panel, API, MVP, SaaS product, e-commerce platform, or AI-powered feature, I can help you plan it, build it, test it, and improve it. Let’s discuss your idea and find the best way to build it properly.

  • Firebase
  • Java
  • PHP
  • C#
  • MySQL
  • MongoDB
  • JavaScript
  • React
  • Django
  • API Development
  • ASP.NET
  • Docker
  • Git
  • Laravel
  • Slim
Syed A.

London, United Kingdom

$25/hr
4.9
14 jobs

I’m a Flutter developer with 4 years of experience building, fixing, and scaling Android and iOS apps using Flutter and Firebase. I help startups and businesses: Build Flutter apps from scratch Fix bugs and performance issues in existing apps Implement clean UI from Figma or designs Integrate Firebase authentication, Firestore, and real-time features Connect REST APIs and third-party services Prepare and publish apps to the App Store and Play Store I’ve delivered Flutter apps in domains like ride-sharing, prayer times, productivity tools, and utility apps, focusing on stability, scalability, and fast delivery. I communicate clearly, work efficiently, and deliver clean, maintainable code — not quick hacks. Tech stack: Flutter, Dart Firebase (Auth, Firestore, Storage, Realtime DB) REST APIs, Push Notifications Google Maps State Management (Provider, Riverpod, Bloc) Native Code implementation (Swift UI , Kotlin) If you need a reliable Flutter developer for a small task or a long-term project, feel free to invite me.

  • Firebase
  • Hybrid App Development
  • Dart
  • Flutter
  • Android App Development
  • API Integration
  • iOS Development
  • iOS
  • Mobile App Redesign
  • Mobile App
  • Mobile App Design
  • Mobile UI Design
  • App Development
  • Payment Gateway Integration
  • Flutter Stack
Wasiq C.

Wakefield, United Kingdom

$35/hr
4.9
253 jobs

Senior Full Stack Web & Mobile App Developer | Contract & Remote Specialist With 15+ years of experience and over 4,000 hours worked on Upwork, I help businesses build scalable, secure, and high-performance web and mobile applications that deliver measurable results. I specialise in PHP, Laravel, React, Node.js, Flutter, AWS, and AI/ML integration creating tailored solutions that meet your current needs and grow with your business. 💼 Core Services Full Stack Web Development – PHP, Laravel, React, Vue.js, Nuxt.js, Node.js, TypeScript, Angular Mobile App Development – Flutter, React Native, cross-platform, native iOS & Android Cloud Integration & Deployment – AWS, Google Cloud, serverless architecture, CI/CD pipelines AI/ML Integration – Hugging Face, Python, NLP, automation workflows E-Commerce Solutions – WooCommerce, Shopify, OpenCart, Magento, custom SaaS platforms Legacy System Modernisation – performance optimisation, security hardening, migration to cloud 🏆 Why Clients Hire Me Proven Track Record: 217+ successful projects and $100K+ earned on Upwork Enterprise Experience: Delivered solutions for Holland & Barrett, NHS, and other global brands Industry Expertise: Healthcare, E-learning, FinTech, Retail, SaaS, and more End-to-End Delivery: From initial concept to deployment, with ongoing support Strong Communication: Clear updates, quick responses, and deadline-focused delivery 📌 Technology Stack & Tools Languages & Frameworks: PHP, Laravel, JavaScript, TypeScript, React, Vue.js, Nuxt.js, Node.js, Flutter, Angular Databases: MySQL, MongoDB, SQL Server Cloud Platforms: AWS, Google Cloud Version Control: Git, SVN AI/ML Tools: Hugging Face, TensorFlow, Python 💡 Let’s Build Something Great Whether you need a full-stack partner for a new build, a mobile app expert to reach more customers, or cloud & AI-powered solutions to modernise your systems, I can help. 📩 Let’s discuss your project today and bring your vision to life.

  • Firebase Realtime Database
  • React Native
  • PHP
  • User Authentication
  • Flutter
  • Laravel
  • JavaScript
  • Mobile App Development
  • React
  • Node.js
  • API Development
  • WordPress
  • Web Development
  • Full-Stack Development
  • Vue.js
Waqas R.

Oban, United Kingdom

$60/hr
5.0
13 jobs

Hi, I'm Waqas R., a Full-Stack Software & Mobile Application Engineer with a deep specialization in Cybersecurity, delivering custom web applications, iOS & Android mobile apps, and end-to-end security solutions for startups, SMEs, and enterprises worldwide. If you need software that is fast, scalable, and secure by design, you're in the right place. 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐈 𝐎𝐟𝐟𝐞𝐫: ✔️ Full-Stack Web Development ✔️ Mobile Application Development ✔️ Cybersecurity & Information Security ✔️ Secure Software Architecture ✔️ AI Integration & Automation ✔️ UI/UX Design for Web & Mobile ✔️ API Development & Third-Party Integrations ✔️ Cloud Deployment & DevOps ✔️ Performance Optimization, Bug Fixing & Maintenance: Fast, stable, and production-ready at all times 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞? ✅ Security-first mindset ✅ Full-Stack & Mobile under one roof ✅ Clear communication & reliable delivery ✅ Available across all major time zones: EST, CST, PST, and UK 📞 Ready to build something powerful, secure, and production-ready? Message me today and let's bring your idea to life. 🔹 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 React.js, Next.js, Vue.js, Angular, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, Bootstrap, Redux, Webpack 🔹 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 Node.js, Express.js, Python, Django, FastAPI, Flask, PHP, Laravel, Ruby on Rails, Java, Spring Boot, GraphQL, REST APIs, Microservices, WebSockets 🔹 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 React Native, Flutter, Swift, SwiftUI, Kotlin, Dart, Xcode, Android Studio, Expo, App Store Deployment, Google Play Deployment, Push Notifications, Offline Storage 🔹 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 PostgreSQL, MySQL, MongoDB, Redis, Firebase, SQLite, Supabase, DynamoDB, Elasticsearch, Prisma, Sequelize 🔹 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐯𝐎𝐩𝐬 AWS, Google Cloud Platform, Azure, Docker, Kubernetes, CI/CD, GitHub Actions, Jenkins, Nginx, Linux, Terraform, Ansible, Vercel, DigitalOcean 🔹 𝐂𝐲𝐛𝐞𝐫𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲 Penetration Testing, Ethical Hacking, Vulnerability Assessment, OWASP Top 10, Network Security, Web Application Security, API Security, Burp Suite, Metasploit, Nmap, Wireshark, Kali Linux, SIEM, SOC, Incident Response, Threat Modeling, Security Audits, Firewall Configuration, Zero Trust Architecture, CVE Analysis, Secure Code Review, SSL/TLS, OAuth 2.0, JWT Security 🔹 𝐀𝐈 & 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 OpenAI API, LangChain, LLM Integration, Chatbot Development, Machine Learning, NLP, RAG, Vector Databases, Pinecone, n8n, Zapier, Make (Integromat), Webhook Automation 🔹 𝐀𝐏𝐈 & 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 RESTful APIs, GraphQL, Stripe, Twilio, SendGrid, Google APIs, Zapier, OAuth, OpenAPI, Postman, Swagger 🔹 𝐕𝐞𝐫𝐬𝐢𝐨𝐧 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 & 𝐓𝐨𝐨𝐥𝐬 Git, GitHub, GitLab, Bitbucket, Jira, Notion, Figma, Postman, VS Code Best Regards, Waqas R.

  • Firebase
  • Node.js
  • Next.js
  • React
  • MySQL
  • Artificial Intelligence
  • Chatbot
  • Mobile App
  • Cybersecurity Monitoring
  • Penetration Testing
  • Vulnerability Assessment
  • Security Testing
  • Custom App
  • Software Design
  • CRM Software

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