Hire the Best Android Developers
in Spain

Need someone who can build, stabilize and scale your Android product? You just found him 🤝 📊 12+ years in mobile delivery 📊 20+ Android-focused projects 📊 10+ years supporting regulated and business-critical products 📊 Experience with compliance-ready apps, secure payments, backend-heavy systems and Software Development I help companies create secure, maintainable, high-performance apps for Healthcare, FinTech and consumer products. Core Expertise 🔹 Native Android engineering with modern architecture and Software Design 🔹 Kotlin-first development with maintainability in mind 🔹 Legacy modernization from Java to Kotlin 🔹 Secure integrations, performance tuning, release stability 🔹 Product delivery for Healthcare, FinTech, consumer platforms and Mobile App Development I’m an android developer focused on products where reliability and clean architecture matter. As a kotlin developer, I build scalable solutions with android kotlin best practices, Jetpack tooling and AOSP awareness. Clients come to me for android developer kotlin expertise when they need stability, lower technical debt and growth. I work as an android app developer on products that need more than interface implementation. I support teams with android app development for secure solutions where every android app stays maintainable after launch. My background: improving an android application used by thousands of users, integrating backend systems, payment flows, and healthcare-grade data handling. That is why companies hire me as an android mobile developer ( android mobile app developer ) when they need delivery. What I Do Best ✅ Android development using Kotlin and Java ✅ Architecture design with MVVM, Clean Architecture, modularization ✅ Backend communication, authentication and payment integrations ✅ Performance optimization, debugging, maintenance and release support ✅ Application Improvement for live mobile products ✅ Solo delivery or collaboration inside a larger team My strongest specialization is android developer kotlin work. I often join teams that need android developer kotlin java skills to modernize legacy code, migrate modules, and improve release quality without a full rewrite. That work benefits from practical experience as a java developer and from thinking like an android kotlin developer who can handle new features and stabilization. Relevant Experience Highlights 🔸 Healthcare mobile applications with compliance-aware architecture 🔸 Performance optimization and crash-rate reduction 🔸 Secure data handling and app stability improvements 🔸 Secure apps with payment integration and transaction-safe flows 🔸 Backend integrations with PHP, Python, JavaScript, and REST APIs 🔸 Collaboration with iOS, backend, QA, and web teams 🔸 Ability to scale from one engineer to a delivery team I also have experience with android ble and android bluetooth features for pairing flows and reliable data exchange. Whether I contribute to an android mobile app or support an existing codebase as a mobile developer, I focus on release readiness. Tech Stack 🔸 Android kotlin with Jetpack, Compose, Android SDK, AOSP 🔸 Java, Firebase, secure cloud services, CI/CD 🔸 REST APIs, secure auth, payment gateways 🔸 Node.js, JavaScript, C#, SQL for backend alignment 🔸 Git, Android Studio, release workflows, crash analysis 🔸 MVVM, Clean Architecture, modular apps, scalability-first mindset My work is rooted in native Android, but I also understand broader product ecosystems. I collaborate effectively as an ios developer ( ios app developer ) when cross-platform alignment matters, including iOS Development discussions with teams using Swift. I have worked alongside teams using react native and reviewed delivery implications where flutter developer was involved, though I do not present those as my core specialization. That exposure helps me operate as an android developer and product-minded mobile app developer within cross-functional teams. Team & Product Collaboration 🔹 Coordination with a rest api developer 🔹 Alignment with web application development 🔹 Communication with a web developer or front end developer 🔹 Familiarity with database builder, django, and python automation Support I Can Provide ✔️ Build a mobile app from scratch ✔️ Join an existing product as an app developer android ✔️ Refactor legacy code and modernize architecture ✔️ fix android application bugs and improve release readiness I do not position myself as a wordpress, magento, game developer or unreal engine specialist and I do not use unrelated positioning such as android developer india. Even when someone types android develoer, they usually need a senior specialist who can take ownership. I built mobile applications for autism-related projects with intuitive user experience. 📬 If you need an android developer who can improve an existing product, build a reliable solution from scratch or support growth with kotlin developer depth, send me a message.

Hi! I’m Bogdan — a Mobile Developer & Product Strategist with 15+ years of experience helping startups and enterprises bring ideas to life through clean code, smart design, and measurable results. I lead a European development team recognized by Clutch among: 🏆 Top 100 Mobile Development Teams in Europe 🏆 Top 30 Flutter Developers What You Get I focus on building products that are fast, stable, and user-loved — not just apps. Clients come to us when they need to: ✅ Turn an idea into a working MVP in 6–8 weeks ✅ Rebuild or scale an existing mobile app ✅ Integrate AI assistants, chatbots, or recommendation engines ✅ Improve UX and retention through research and design Tech Stack Mobile: Flutter, Swift, Kotlin, React Native Backend: Java, Python, PHP (Laravel), Django, Firebase AI & Automation: OpenAI API, LangChain, custom LLMs Design: Figma, Adobe Suite, UX research, prototyping Our Process 1) Discovery & Scoping – align tech and business goals 2) Design & Development – transparent weekly sprints 3)Testing & Launch – QA, analytics, and release support 4) Post-launch support – flexible maintenance and scale-up Why Clients Choose Us ⭐ Fast & proactive communication (no agency bureaucracy) ⭐ Transparent time tracking (Upwork hourly or milestone) ⭐ Stable European team — not freelancers on rotation ⭐ Code ownership 100% belongs to you Let’s build something your users will love — and that actually moves your business forward. Send a quick message with your idea or challenge, and I’ll reply within a few hours.

I have more than 5 years of experience developing Android applications. I enjoy using and learning modern tech-stack and environments, estimating costs or developing time and providing valuable solutions. My main competences could be summarised as follows: • Android: Native Kotlin/Java (MVVM, LiveData, Coroutines, ViewBinding, Retrofit, Koin, Picasso, Dagger, Jetpack Compose) • Web Frontend: Bootstrap, JQuery, JS, CSS, JSF, PrimeFaces, RichFaces, JSP • Persistance: SQLite, Room, MySQL and NoSQL databases (GraphQL, MongoDB, Firebase Realtime Database) • Testing: JUnit // Mockk • Methodologies: Jira, Agile, SOLID

ABOUT ME Mobile Developer with 7+ years of experience building and scaling production Android applications. I specialize in Kotlin, Jetpack Compose, and modern Android development, with strong expertise in Clean Architecture (MVVM/MVI), performance optimization, and modularization. I have experience developing applications from scratch, designing architecture and delivering features end to end, as well as refactoring legacy codebases to improve maintainability, stability, and performance. I also have hands-on experience with cross-platform development using Kotlin Multiplatform, sharing business logic across Android and iOS. I focus on writing clean, maintainable code and delivering reliable, high-performing mobile applications. Comfortable working independently and collaborating with cross-functional teams to drive product value. SKILLS - Programming: Java, Kotlin, Coroutines, OOP - Android: Android SDK, Jetpack Compose, SQLite, Room, Navigation, WorkManager, Material Design - Architecture: MVVM, MVI, Clean Architecture, Modularization - Networking: Retrofit, OkHttp, Ktor, REST - Dependency Injection: Dagger2, Hilt, Koin - Testing: JUnit, Mockito, Espresso - Version Control & CI/CD: Git, Gradle, CI/CD pipelines - Cross-platform: Kotlin Multiplatform (Android, IOS), Flutter - SDKs & APIs: Google Maps, Mapbox, Android Auto, Social Media SDKs, Analytics & - Crash Reporting: Firebase Analytics, Crashlytics, Google Play Billing Library, Ads & - Monetization: AdMob, app Subscription, Purchases - Connectivity: Bluetooth, Wi-Fi Direct, Hotspot, WebRTC - Computer Vision: MediaPipe

✅C++ for Linux, macOS, Windows, iOS, Android, WASM, Nodejs addons, Python, microcontrollers ✅Nvidia Jetson Orin, Orange Pi 5 with AI solutions based on neural networks and OpenCV ✅High level review sources ✅Help with architecture and UML design ✅Help with schematic and PCB Hardware design ✅AI integration of any famous library to embedded solution ✅Help with production PCB on JLCPCB and PCBWay

I am a seasoned iOS/macOS developer with over 6+ years of experience building high-performance applications across iPhone, iPad, macOS, and watchOS platforms. I focus on delivering clean, scalable, and maintainable solutions with strong attention to detail and product quality. I have experience working on MVPs and startup launches, as well as advising on technical architecture and product development. My expertise includes native iOS development (Swift, SwiftUI, UIKit) and backend integration using Firebase. I work with startups and small to medium-sized businesses, helping them build, scale, and improve their digital products efficiently within budget and timeline constraints. Key highlights: * Apps with 100,000+ monthly active users * Successful MVP launches with early user acquisition via TestFlight * Product scaling that increased user base by 40% What you can expect when working with me: * Clear and transparent communication * Fast response times and structured updates * Technical consulting tailored to business needs * Smooth collaboration with distributed teams * Strong focus on quality, performance, and maintainability * Full support during development and transition phases I’m open to new opportunities and collaborations.