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Hi👋!... I'm Tomas, a seasoned mobile app developer with over 15 years of experience crafting exceptional mobile applications for Android, iOS and the web. Over the past 15+ years, I’ve been developing innovative, efficient, and high-performing mobile applications for both Android and iOS. I focus on combining the latest technology with intuitive designs, ensuring that every app I create is both visually appealing and highly functional. Throughout my career, I’ve had the pleasure of working with amazing clients all over the world like the Brussels Intercommunal Transport Company, Carrefour, Ghelamco Group, and so many more but what I value the most, is the ongoing relationships I build with my clients. It’s important to me to not just deliver a product, but to work closely with my clients, understand their needs, and create something that really works for them. While I may be new to Upwork, I’ve had the chance to work on plenty of exciting projects elsewhere, and I’m excited to bring that experience and passion to your project! Okay Tomas, what do you bring to the table? 🍽️ ✦ Senior Flutter Developer with extensive knowledge in state management (Bloc, Riverpod, mobx, signal, ..), navigation (go_router, beamer, auto_route), http (dio, http), concurrency (isolates, locks, synchronized), dependency injection, reactive streams, firebase, ... ✦ Developed various Flutter packages on pub.dev for the Flutter community ✦ Created over 100 apps with Flutter & Dart ✦ Responsive communication ✦ Transparent pricing with no hidden costs Hey Tomas, you look like a good fit! How do we continue? 🤝 ✦ Let's kick things off with a discovery session to understand your vision and goals. ✦ We'll work together to define the project scope and create a clear development plan. ✦ You'll get a dedicated platform where you can deliver your assets and requirements. ✦ Regular updates throughout the development process, keeping you in the loop with progress ✦ Prepare the app for launch, guiding you through submission to the app stores ✦ Post-launch support to address any issues and ensure smooth performance Still unsure if I'm the right fit? ☕️ Let's hop on a call and turn your vision into a successful mobile app!

Mobile App Developer | Built scalable iOS & Android apps, fixed performance issues, and improved user experience using Flutter and React Native. I review your app idea and give a clear roadmap to build a fast, scalable, and successful mobile app. ✔𝗜 𝘄𝗶𝗹𝗹 𝗿𝗲𝘃𝗶𝗲𝘄 𝘆𝗼𝘂𝗿 𝗮𝗽𝗽 𝗶𝗱𝗲𝗮 𝗮𝗻𝗱 𝘀𝘂𝗴𝗴𝗲𝘀𝘁 𝗶𝗺𝗽𝗿𝗼𝘃𝗲𝗺𝗲𝗻𝘁𝘀 𝗯𝗲𝗳𝗼𝗿𝗲 𝘄𝗲 𝘀𝘁𝗮𝗿𝘁. Many clients struggle with slow, buggy, and poorly designed mobile apps. Some apps fail because of bad user experience, weak performance, or poor scalability. This leads to wasted time, money, and missed business opportunities. I help you build high-performance, user-friendly, and scalable mobile apps for all platforms (iOS, Android, and cross-platform). I use modern technologies like Flutter, React Native, and native development to deliver apps that run smoothly and help your business grow. ➡𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 ✔ Cross-platform mobile app development ✔ Native iOS & Android apps ✔ UI/UX focused app design ✔ API integration & backend systems ✔ App performance optimization ✔ AI integration in mobile apps ➡ 𝗦𝗸𝗶𝗹𝗹𝘀 ✔ Flutter ✔ React Native ✔ Swift ✔ Kotlin ✔ Java ✔ Firebase ✔ REST APIs ✔ UI/UX Design ✔ AI Integration ✔ AI Chatbot Development ➡ 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 ✔ Full mobile app development (iOS & Android) ✔ Cross-platform app development ✔ App UI/UX design ✔ Bug fixing & performance optimization ✔ App upgrade & maintenance ✔ API integration & backend connection ✔ App store deployment (Play Store & App Store) ➡ 𝗪𝗼𝗿𝗸𝗶𝗻𝗴 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 ✔ Built multiple apps from idea to launch ✔ Worked with startups and growing businesses ✔ Delivered scalable and high-quality apps ✔ Long-term client collaboration experience ➡𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆 ✔ E-commerce ✔ Healthcare ✔ Education ✔ Business & Finance ✔ Social Networking ➡ 𝗗𝗼𝗺𝗮𝗶𝗻 ✔ On-demand apps ✔ Booking systems ✔ Payment integration apps ✔ Chat & messaging apps ✔ AI-powered applications ✔ Custom business solutions ➡𝗧𝗼𝗼𝗹𝘀 ✔ Android Studio ✔ Xcode ✔ VS Code ✔ Firebase Console ✔ Git & GitHub ➡𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 ✔ Clean and scalable code ✔ On-time delivery ✔ Clear and fast communication ✔ Long-term support ✔ 100% client satisfaction focus ✔Message me now with your app idea and I will guide you step by step for FREE 𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀: mobile app developer, flutter developer, react native developer, ios developer, android developer, cross platform apps, mobile app development, flutter app developer, react native app developer, mobile ui ux, firebase developer, rest api, kotlin, swift, java, hybrid apps, native apps, app design, app optimization, bug fixing, app maintenance, scalable apps, startup apps, ecommerce apps, chat apps, booking apps, ai apps, ai integration, chatbot development, custom apps, mobile solutions, android studio, xcode, git, api integration, user friendly apps, performance optimization

Top Rated Plus | Top 3% on Upwork in AI-Powered Apps Give me an app idea to build, and I'll build it into AI-powered mobile app people actually love to use. That's my promise. If you shoot me a invitation or message ill send you a personalised loom video back on how i may be able to help you! A little more about me: I help startup and businesses launch mobile app fast without the delays, complexity and cost of building an in-house development team. Whether you are validating an MVP, scaling an existing product or adding AI features, I build production ready iOS and Android apps focused on real users and real growth. • 6+ years building mobile products for startups and businesses • 100% Job Success Score | 5.0 ★ average • 1000+ hours delivered on Upwork • Top Rated Plus | Top 3%on Upwork • Strong focus on AI-powered mobile systems & MVP development What I build: • AI-powered mobile applications • Startup MVPs & product validation apps • SaaS mobile platforms • Marketplaces & on-demand apps • FinTech & Crypto apps • Health & fitness platforms • Food delivery & booking systems • Social & community apps • Real estate & EdTech products 🔧 Expertise: Mobile App Development | Mobile App Developer | React Native Developer | Flutter Developer | iOS App Development | Android App Development | Cross-Platform App Development | AI Mobile App Development | AI App Development | Full Stack Developer | Flutter App Developer | Custom Mobile App Development | ChatGPT Mobile Integration | OpenAI API Mobile App | Ride Sharing App Development | Fitness App Development | Healthcare App Development | Food Delivery App Development | Dating App Development | E-commerce Mobile App | Fintech Mobile App | AI Mobile App Developer | Full Stack Mobile App Developer | iOS & Android Apps | Flutter Development | React Native Apps | AI Integration with Mobile Apps | OpenAI / GPT Apps | Firebase & Supabase Backends | Stripe & Payment Systems | API Integration | BLE & Real-Time Features | App Store & Play Store Deployment | Scalable Mobile Architecture

I have been building software professionally since 2011. I started out freelancing, taking web and mobile projects end to end for clients across a range of industries, handling everything from the first conversation through architecture, implementation, and delivery. From 2018 to 2025 I worked as a contract engineer at Attempt Technologies, building products in healthcare, social platforms, telecommunications, and web conferencing. Most of my work now involves AI, Full Stack Engineering, and Mobile Development. Some of the cool things I build are AI SaaS startups, intelligent automations that take recurring work off a team's plate, RAG systems that turn internal documents into answers people can actually use, and agents that run workflows end to end rather than demos that fall over in production. I build the products around them too. Web apps, mobile apps, and the backends underneath. I work directly with the people I am building for. No account managers, no handoffs, no telephone games. I take on a small number of engagements at a time so each one gets real attention, and I would rather tell you that you do not need me than sell you work you will regret. I am based between Brussels and Colorado, and I work with teams anywhere remotely.