Hire the Best DART Developers
in the Netherlands

Hi! I'm Hamid — a Flutter Mobile App Developer with 3 years of hands-on experience building clean, fast and reliable mobile applications. I specialize in: Flutter (Cross-Platform) Firebase (Auth, Firestore, Storage, FCM) REST API Integration State Management (Provider, GetX, Bloc if needed) Clean UI/UX with Responsive Design Bug fixing & performance optimization 💡 Why choose me? I write clean, maintainable code. I deliver on time and communicate clearly. I can build full apps from scratch or join an existing project. I focus on simple, beautiful and user-friendly UI. I can help you build: Service/Booking Apps Small Business Apps Informational & Utility Apps Firebase-connected applications Apps with login, signup, dashboards, and dynamic data If you're looking for a reliable Flutter developer who actually cares about the project — I’m here and ready to start. Let’s build something amazing!

I build production ready AI mobile apps with Flutter and React Native, from AI assistants and AI agents LLM's Agentic AI to Voice AI, RAG, OpenAI/Claude integrations, Tuya SDK , Tuya OEM and intelligent mobile experiences. If you already have an AI prototype, an existing mobile app, or an idea that needs the right technical direction, I turn it into a reliable iOS & Android product, not just a demo that breaks when real users arrive. With 10+ years of mobile development experience and previous IBM experience, I combine strong Flutter/React Native engineering with modern AI/ML to build, improve, and scale mobile products. WHAT I CAN HELP YOU SOLVE → Turn AI prototypes into production-ready mobile apps → Integrate AI into existing Flutter or React Native apps → Build AI assistants, chatbots, and AI agents → Add Voice AI, speech-to-text and text-to-speech → Implement RAG, semantic search and AI knowledge bases → Integrate OpenAI, Claude, Gemini and other AI APIs → Build intelligent recommendations and personalization → Fix performance, architecture, API and scalability issues → Modernize or rescue an existing mobile codebase → Build secure AI-powered healthcare and wellness apps → Connect mobile apps with Tuya/BLE devices when required AI + MOBILE DEVELOPMENT AI is easy to demonstrate. Making it reliable inside a real product is the difficult part. I build AI features together with the mobile UI, backend/API layer, authentication, data flow, error handling, performance and scalability. My AI experience includes: → AI Agents & Agentic Workflows → AI Integration & Generative AI → AI Chatbots & AI Assistants → Voice AI & Conversational AI → OpenAI, Claude & Gemini → RAG & Retrieval-Augmented Generation → Vector Search & Semantic Search → AI recommendations & personalization → Speech-to-Text / Text-to-Speech FLUTTER & REACT NATIVE I specialize in Flutter/Dart and React Native/Expo/TypeScript for production iOS and Android applications. I can start from scratch, work from an AI-generated prototype, improve an existing codebase, or add complex features to a live product. SELECTED PROJECT EXPERIENCE AI Chatbot & AI Assistant — Flutter + OpenAI Built an AI-powered mobile assistant with Flutter and OpenAI integration, connecting conversational AI with mobile workflows. AI-Powered Health Tracking — React Native / Expo / OpenAI Developed an AI-powered health tracking application combining React Native/Expo with OpenAI functionality. HIPAA-Compliant AI Calorie Tracker Worked on an AI-powered calorie and health monitoring application focused on personalized nutrition and secure sensitive-data handling. AI Healthcare Mobile App — iOS & Android Worked on an AI-powered healthcare application with doctor booking and patient workflows, focusing on secure architecture and sensitive health data. Pet Matching App — Flutter + AI Agents Worked on a Flutter iOS/Android pet matching application incorporating AI-agent functionality. CourtPro Sports Booking — Community + AI Player Analysis Worked on a sports booking and community application with AI-powered player analysis. Oladoc & Aura I’ve worked on Oladoc and Aura, with both products reaching 1M+ downloads. TUYA / BLE — EXPERT AI and mobile development are my primary focus, but I also have specialized Tuya experience for products requiring mobile-to-device communication. → Tuya SmartLife App SDK & BizBundle → Tuya OEM applications → Smart-device pairing and control → BLE scanning, pairing and connections → Real-time device/sensor data Selected work includes AquaSentra Smart Water and Trusted Air. HOW I APPROACH YOUR PROJECT I don't start with “Which framework should I use?” I start with the product. What problem are we solving? Where does AI create value? What belongs in mobile versus backend? What can break at scale? For existing apps, I identify the real bottleneck before recommending a rewrite, whether it is poor architecture, performance, AI integration, technical debt, crashes or third-party API issues. For new products, I build an architecture that can evolve with users, features and AI usage. TECH STACK Flutter · Dart · React Native · Expo · TypeScript · Swift · SwiftUI · Kotlin · OpenAI · Claude · Gemini · AI Agents · RAG · Vector Search · Voice AI · LangChain · LangGraph · MCP · Firebase · Supabase · Node.js · FastAPI · PostgreSQL · REST APIs · WebSockets · Tuya · BLE · If you're building an AI-powered mobile app, adding AI to an existing Flutter/React Native product, developing an AI assistant or agent, implementing Voice AI/RAG, or need a senior mobile developer to take your product from prototype to production, send me your requirements. I’ll help you identify the right technical approach, risks and most practical path forward. AI Mobile App Developer | Flutter & React Native | AI Agents LLM | Voice AI Agents | Tuya

Recent work: a full RLS security audit and hardening pass on a production Supabase backend. A 410-test Playwright suite on a Next.js portal. A Postgres outbox pattern for reliable async side effects. 100% Job Success across 22 jobs. Most clients come back for a second project. I lead with specifics because anyone can claim "clean code and great communication." Specifics are harder to fake. I'm a senior Flutter developer (10+ years mobile, 7+ in Flutter) based in the Netherlands, working with startups and scale-ups across Europe. Three ways I'm probably different from the other profiles you're comparing: 1. I'm genuinely full-stack. Flutter is my core, but I regularly own the whole system: Next.js portals, Supabase/Postgres (including RLS security audits and migrations), Hono/Bun backends, CI/CD, TestFlight releases. You don't need a second freelancer for the backend. 2. My AI work is in production, not in demos. LLM APIs, semantic search with pgvector, RAG pipelines shipped as real features users pay for. If you want AI that's actually useful in your product rather than a chatbot bolted on, I've done it and can show you. 3. I work like it's 2026. I run AI-assisted, multi-agent development workflows daily, which means senior-level architecture decisions delivered at a pace solo developers couldn't match a few years ago. You get speed without the usual speed/quality trade-off. What I've shipped: fintech and crypto apps, large-scale e-commerce, enterprise onboarding, social apps, inspection/field-service SaaS. Architecture through App Store submission, every time. Stack: Flutter & Dart · Riverpod & BLoC · Firebase & Supabase · PostgreSQL + pgvector · TypeScript / Next.js / Hono / Bun · OpenAI & Anthropic APIs · Fastlane, CI/CD, Playwright Where I fit best: 📱 Greenfield builds - architecture to App Store 🤖 AI features - summaries, semantic search, chat, recommendations 🚑 Rescues - performance problems, state-management messes, codebases left behind by a previous dev 🧪 Hardening - testing, refactoring, security audits, code review How I work: clear, proactive communication, you'll never wonder where things stand. Documented code with tests, because whoever maintains it after me deserves that. And I don't need hand-holding: point me at a problem and I'll own it end to end. If your project needs someone who can think about the whole product, not just the Flutter layer, send me a message and tell me what you're building.

Highly skilled Mobile Developer with 5 years of experience in developing and delivering innovative mobile applications. Proficient in iOS and Android platforms, with a strong understanding of mobile development best practices. Committed to creating robust, efficient, and user-friendly applications. Strong problem-solving skills and a passion for staying up-to-date with the latest industry trends and technologies.

🌍 Global Projects & Customers 🌍 More than 16 Tier-1 Global customer 🌍 💡 Specializing in FinTech, E-Commerce, AI-Powered Recruitment, Events management, and E-Learning Platforms 💡 👨‍💻 Leading Teams of Full-Stack Developers 👨‍💻 ✅ Flutter and FlutterFlow ✅ React ✅ AI/NLP/Computer Vision With over 18 years of experience, I lead teams of developers in building cutting-edge digital platforms and applications. My career spans working with leading vendors like Alcatel, NOKIA, and Huawei, bringing deep technical expertise and leadership to global projects. I also foster strategic partnerships with innovative technology companies such as Ultrahire.ai, Innovito.com, and Payspin.io, gaining access to key platforms like Intervue.io, NVISO.ai, NVIDIA Inception Program, and ZoomMeeting. My passion is in building scalable solutions, with a focus on FinTech, e-Commerce, and E-Learning, while managing skilled teams proficient in Flutter, FlutterFlow, Android, Kotlin, Dart, React, and Angular. I oversee projects from concept to deployment, ensuring high-quality, user-centric applications that meet business goals. 💼 Key Highlights: ✅ 18+ years of experience in technology and digital platform development ✅ Proven track record with global customers and projects ✅ Top-tier experience with Alcatel, NOKIA, and Huawei ✅ Leading teams of full-stack developers skilled in Flutter, FlutterFlow, Kotlin, Dart, React, and Angular ✅ Extensive expertise in FinTech, e-Commerce, E-Learning, and AI-powered mobile apps 🔧 Technical Expertise: ✅ Mobile App Development (Android, iOS, Flutter, FlutterFlow) ✅ Full-Stack Development (React, Angular, Node.js) ✅ Backend & API Development ✅ Third-Party API Integration (Payment systems, Firebase, Google Maps) ✅ Cloud & DevOps (Azure, Firebase, RESTful APIs) ✅ State Management and App Architecture ✅ Performance Tuning, Testing, and Debugging 🎯 Recent Features Developed: ✅ Keyword Matching Technology: AI/NLP | Platform: Ultrahire.ai Description: Matches keywords entered by recruiters with those used by candidates in video/text responses. ✅ CV Skills Matcher Technology: AI/NLP | Platform: Ultrahire.ai Description: Highlights key skills in candidate CVs based on reference keywords without requiring full CV screening. ✅ Candidate Online Exams Assessment Technology: Auto-assessment with proctoring | Platform: Ultrahire.ai Description: Allows recruiters to invite candidates to take proctored exams, assessing their technical and non-technical skills with anti-plagiarism techniques. ✅ Pair-Programming/Collaboration Assessment Technology: Live online testing/interview | Platform: Ultrahire.ai Description: Enables live interviews with shared coding environments and whiteboards for technical assessments and pair-programming evaluations. ✅ AI Psychometric Analysis Assessment Technology: AI/NLP/Computer Vision | Platform: Ultrahire.ai Description: Uses AI to assess candidate video answers, analyzing speech, facial expressions, and body language to score key human traits. ✅ Applicant AI Psychometric Self-Assessment Technology: AI/NLP/Computer Vision | Platform: Ultrahire.ai Description: Provides applicants with performance feedback on video interviews, using AI to analyze gestures, speech, and expressions, with personalized tips for improvement. 🎯 Additional Specializations: ✅ Mobile App Development for AI-Powered Mobile Applications ✅ Mobile App Development for On-Demand Mobile Apps ✅ Mobile App Development for Ride Instructor Booking Apps ✅ Recruitment Platforms ✅ Automotive Services Platforms ✅ Fixing Web & Mobile App Bugs ✅ Implementing New Platform Features ✅ Platform Transformation to Cloud and AI-Native Architectures ✅ Platform Management Operations & User Behavior Analysis ✅ Integration with 3rd-Party Apps, APIs, and Frameworks ✅ Building Cross-Platform Mobile Apps ✅ Strengthening Platform Security As a hands-on leader, I ensure my teams deliver exceptional results in both functionality and security, continuously optimizing platform performance. Whether building complex platforms or integrating advanced AI solutions, I am dedicated to driving innovation and success in every project.

Enterprise Gen AI setups with on premise data secure applicaitons. Working with banks, insurance companies etc. ☑️Elevenlabs ✅LLM finetune ☑️ Voice AI applications ✅VAPI, Retell ☑️local LLM hosting ✅Vector databases ☑️ RAG solutions ✅Whisper STT finetune ☑️ TTS pretrain or finetune