Hire the Best Firebase Developers
in Finland

I build Flutter and Android (Kotlin) apps that ship — production-ready, well-structured, and integrated with the services your users depend on. Over 4 years I've worked across the full mobile stack: REST APIs, Firebase (Auth, Firestore, Cloud Messaging), Stripe payment flows, push notifications, deep linking, and Android SDK development. My contracts have included a fintech startup in Australia (Stripe integration), a savings app in India (notifications + onboarding), and a flight booking platform in Nepal (Kotlin SDK + Flutter app + Viber bot). I work well remotely and asynchronously. I've collaborated with design, backend, and partner teams across Nepal, India, and Australia — and I know how to document and hand off code that others can maintain. I'm currently based in Vaasa, Finland, pursuing an MSc in AI & Data Engineering, and available for part-time work (15–25 hrs/week). What I can help you with: → Building a Flutter app from scratch or extending an existing one → Integrating Stripe, Firebase, or third-party APIs → Setting up push notifications, deep linking, or onboarding flows → Building a reusable Android SDK for partner integrations → Fixing bugs, improving performance, or refactoring messy Flutter code If you have a specific project in mind, message me with a brief and I'll tell you honestly if it's a fit.

Hello! My name is Sanjay Bhattarai, and I am a Fullstack Software Developer based in Helsinki, Finland. I am pursuing a degree in Information Technology at Oulu University of Applied Sciences and have hands-on experience building web and mobile applications from scratch. Professional Experience & Projects: Fullstack Software Developer | Khelset I independently developed Khelset, a sports management and live scoring platform, consisting of two separate applications: Flutter mobile app for users to follow live scores and manage teams: khelset.com React web app for admins to manage players, teams, and matches: admin.khelset.com I implemented real-time match updates, team and player management, responsive UI, and API integrations for live scores. This project highlights my ability to deliver production-ready, full-stack solutions independently. Intern Software Developer | Near Real (MDT Project) Worked on a health data collection app using React Native and Expo, integrating Google Health Connect and MDT APIs. My work included frontend development, API integration, data handling, and technical documentation, strengthening my mobile development and full-stack skills. Technical Skills: Frontend Development: JavaScript, TypeScript, ReactJS, Next.js, Tailwind CSS, SCSS, Flutter, React Native Backend Development: Node.js, Express.js Android App Development: Kotlin, Firebase (Authentication, Firestore, Realtime Database), Android Studio, MVVM Architecture Databases: PostgreSQL, MongoDB Web Development & CMS: WordPress, Elementor, SEO best practices API Development: RESTful APIs, user authentication Hosting & Deployment: Netlify, cPanel Version Control & Collaboration: Git, GitHub, GitLab Why Work With Me? I combine technical expertise, problem-solving skills, and full-stack development experience to deliver high-quality, scalable, and user-friendly applications. I am committed to turning software ideas into fully functional products independently or collaboratively.

For 10+ years, I've helped businesses launch Mobile Apps, improve existing products, and transform ideas into production-ready applications with back-end & API development. 💙 𝗙𝗟𝗨𝗧𝗧𝗘𝗥 ( 𝘋𝘢𝘳𝘵 ) ⭐️ 𝗔𝗡𝗗𝗥𝗢𝗜𝗗 ( 𝘑𝘢𝘷𝘢/𝘒𝘰𝘵𝘭𝘪𝘯 ) 🚀 𝗔𝗜 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 & 𝗖𝗵𝗮𝘁𝗯𝗼𝘁 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 I handle the complete development lifecycle, from UI implementation and backend integration to AI automation, testing, and Play Store deployment. Recently, I developed: ✔ AI custom chatbot using a Retrieval-Augmented Generation (RAG) pipeline with self-hosted n8n automation and a vector database. ✔ AI-powered medical documentation app that reduced manual documentation time by 70% ✔ Multi-vendor food delivery platform serving restaurants, customers, and delivery drivers with real-time order tracking. ✔Rental car booking and fleet management platform. ✔ Wearable technology solution for stress detection and monitoring of field workers. ✔ Enterprise security system integrating E-tag, ANPR, CCTV, motorized barriers, and turnstile access control. ✔ Cross-platform Flutter app development with real-time APIs If you need a reliable flutter developer for Native Android & flutter app development with back-end and who can turn your idea into a working product fast — I can help. 🔧 Technical toolkit: Mobile: Flutter app developer| Native Android application | Dart | JAVA | Kotlin AI Stack: RAG | n8n | LLMs, VectorDb, ChromaDB, PineCone, embedding model Backend: PHP | Laravel | FastAPI | Python | Supabase | Firebase Databases: PostgreSQL | MongoDB | MySQL | SQL Sever | Firebase | Supabase | ChromaDb Deployment: Docker | Vercel | Netlify | AWS | Digital Ocean Other tools: Git | Figma | REST APIs 💡 Why Clients Hire Me: 🚀 Fast delivery without compromising quality 💬 Clear communication & frequent progress updates 🧹 Flutter app development with back-end and Tech advise 🤖 AI-powered solutions that reduce manual work and save costs 🚀 Flutter app developer with consistent performance 🤝 LET'S BUILD YOUR NEXT APP Whether you need a Flutter Developer, Flutter App Developer, Android Developer, iOS Developer, Mobile App Developer, Firebase expert, Supabase, AI Engineer, Hybrid App Developer, or Full-Stack Development partner, Chatbot development I'm ready to help. 🚀 Let's Talk: Send me your project requirements or repo — I'll review everything and provide a clear action plan before we start. Let's build your next AI-powered flutter app with backend together!

✋ Hello there! I'm a Top Rated Full Stack Developer with a proven track record of building high-quality, scalable websites and web applications. With strong expertise in both frontend and backend development, I am confident in my ability to deliver solutions that exceed your expectations. 💻 My Skills and Experiences: ✅ Frontend: Angular.js, React.js ✅ State Management: Ngrx, Redux ✅ Animations & Interactions: GSAP Animation ✅ UI/UX Customization: Website Theme Customization (Dark/Light Mode) ✅ Charts & Data Visualization: ApexCharts.js, Charts.js ✅ Core Web Technologies: HTML5, CSS3, SASS/SCSS ✅ UI Libraries: Bootstrap, Material-UI, Angular Material ⚡ Backend & Full Stack Expertise: ✅ Node.js & Express.js – RESTful API Development & Middleware ✅ Firebase – Authentication, Firestore, Cloud Functions, Realtime Database, Hosting ✅ API Integration & Development – Secure and optimized communication between client and server 🚀 What I Deliver: By leveraging my full stack expertise, I create end-to-end solutions that are secure, scalable, and user-friendly. From intuitive user interfaces to powerful backend systems, I ensure that every project I work on is optimized for performance, accessibility, and reliability. 🌟 Why Work With Me? With a keen eye for detail and a commitment to writing clean, maintainable code, I deliver products that not only meet but exceed modern industry standards. I stay up-to-date with the latest technologies and best practices, ensuring your project benefits from cutting-edge solutions.

Over 9 years of experience building high-performance, scalable web applications, dApps, and complex frontend architectures. Specialized in modern Angular (Signals, RxJS, TypeScript) and Web3 integrations. Located in Finland (UTC+2/3) — seamless communication, direct overlap with EU/US time zones, and high-quality execution. What I Bring to Your Project: • Web3 & DeFi Frontend Architecture: Engineered cross-chain token bridges, liquidity pool interfaces (Deposit/Withdraw/Claim), and real-time relayer dashboards supporting 7+ blockchains (EVM, Solana, Sui, Tron, Stellar, etc.). • 0-to-1 Product Delivery: Proven track record as a Solo Developer, including building full-featured Web Apps & PWAs from scratch based on existing native iOS/Android apps. • High-Performance UI/UX: Expertise in reactive state management, real-time WebSockets, responsive layouts, and smooth GSAP animations. Core Tech Stack: • Frontend: Angular (Signals, RxJS, Modern Control Flow), TypeScript, JavaScript (ES6+) • UI & Styling: SASS/SCSS, Angular Material, GSAP Animations, Responsive Web Design • Web3 & Crypto: Web3.js, Ethers.js, Multi-Wallet Integrations (Solana, EVM, Sui, etc.) • State & Async: Signals, RxJS, Firebase, REST APIs, WebSockets • Tools: Git (GitHub, GitLab), CI/CD workflows Selected Work Highlights: 1. Allbridge (Web3 Cross-Chain Bridge): Built intuitive interfaces for cross-chain swaps, liquidity pools, and monitoring dashboards across 7+ networks with real-time state updates. 2. Clawee (Web App & PWA): Single-handedly built and launched the browser & PWA version of a mobile game using Angular & Firebase, achieving 100% feature parity with mobile apps and launching on Facebook Games. Whether you need to build a Web3 dApp from scratch, modernize an existing Angular platform, or implement complex real-time interfaces — let's connect and discuss your project!

Most of my work right now is building AI agents and Claude API integrations. About ten years in software — full-stack web, Python, and shipping SaaS products end to end. The part I find most interesting is orchestration, retrieval, prompt design, and the unglamorous reliability layer (retries, state handling, error recovery) that turns a demo into something that actually runs in production. The boring stuff is where the real craft hides. Usual stack: Next.js, TypeScript, Python, Claude API, Firebase or Postgres, Stripe, n8n. A few things that matter to me: scoping honestly, so if something is going to take longer than you hoped, you hear it from me early rather than at the deadline. Working with non-technical founders without making them feel stupid for asking questions. And leaving a client genuinely happy matters more to me than the size of the invoice — I'd rather charge a fair price and have you come back next year than squeeze every euro out of one project. Based in Oulu, Finland. Happy to do a short call before any commitment, easier to figure out fit in 20 minutes than over messages.