Hire the Best iOS 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.

Senior full‑stack iOS engineer (Swift/SwiftUI/UIKit) who can ship the mobile app + the backend end‑to‑end (Node.js + TypeScript). If you have an existing app that needs to scale, stabilize, or move faster, I can step in, quickly get context, and start delivering. What I do best • iOS/iPadOS/macOS development in Swift (SwiftUI + UIKit) • API design + implementation (Node.js/TypeScript), Firebase, REST/GraphQL integrations • Architecture & codebase health: MVVM, DI, modularization, testing • Performance & reliability: profiling, crash fixes, memory leaks, smooth UI • Legacy modernization: UIKit → SwiftUI, Objective‑C → Swift Typical engagements 1) Audit (3–5 days, fixed price): quick assessment + prioritized plan + first fixes 2) Stabilization/feature sprint (1–2 weeks, fixed): ship milestones, unblock releases 3) Ongoing retainer (monthly): predictable delivery cadence + support Recent outcomes ✓ Built apps with 100k+ monthly active users ✓ Helped startups gain early adopters via MVP + TestFlight ✓ Modernized legacy codebases and improved performance/stability If you share your repo/API constraints and your top 1–2 goals for the next 2 weeks, I’ll propose a tight plan with milestones.

An iOS developer and AI engineer who takes products from idea to millions of downloads. I built Struckd (12M+ downloads, acquired by Unity Technologies) and Daily Dozen (1M+ downloads, 4.9 rating, featured by Apple). 14+ years shipping production software. 30M+ client app downloads total. Most developers write code. I handle the entire product lifecycle - architecture, development, App Store submission, ASO, growth, and ongoing support. You focus on business and marketing. I handle everything technical. Need someone to drop into an existing codebase and ship features? I do that just as well. I work across two lanes - mobile and AI - and the overlap is where things get interesting: 𝗔𝗜 & 𝗠𝗟 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 - Image and video generation pipelines (Flux, ComfyUI), GPU inference deployment, LLM API integration (Claude, OpenAI), on-device ML (CoreML, Vision, YOLO8), AI agent workflows, RAG systems. I've trained and shipped custom ML models, built real-time object detection, and deployed generative AI backends on production infrastructure with Laravel and dedicated GPU servers. 𝗶𝗢𝗦 & 𝗺𝗼𝗯𝗶𝗹𝗲 - Swift, SwiftUI, SwiftData, UIKit, Combine since day one, with a large library of reusable components for fast shipping. Also Android (Kotlin, Jetpack Compose, KMP), cross-platform (React Native, Expo, Flutter), and deep work in HealthKit/medical apps, BLE hardware, fintech, AR (ARKit, SceneKit, Metal), and game dev (Unity, shipped titles at Unity Corp). Growth is built in. I created ASOFast to solve App Store optimization at scale. I've gotten multiple apps featured by Apple and know the review process inside out. Former CTO, Head of Mobile, and Tech Game Producer. Whether you need an AI-powered app, a standalone AI pipeline, or a polished iOS product - I ship clean, scalable work and think about the business value behind every technical decision. Tell me what you're building, and I'll tell you exactly how I'd ship it.

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.

Transforming complex business bottlenecks into high-performance, enterprise-grade software ecosystems. I am a specialized Full-Stack Software Developer and Technical Project Manager focused on engineering premium, highly scalable applications. If your business is seeking innovation through seamless hybrid software development, I architect intelligent digital products that bring that vision to life with absolute precision across Web, iOS, Android, and Desktop platforms. Going beyond standard app development, I build robust systems designed for massive scale, complex data processing, and absolute UI stability. From rapid MVP prototyping to enterprise-level deployments, I ensure a flawless user experience and top-notch backend architecture. 🚀 Core Competencies & Services: Cross-Platform Frontend Engineering: Expert-level FlutterFlow and Dart development for seamless 1:1 feature parity across all devices. Enterprise Architecture: Offline-first mobile synchronization strategies, complex reactive state management, and high-volume data handling. Backend & Serverless Infrastructure: Advanced implementations using Firebase Realtime Database, Supabase, PostgreSQL, and SQLite. AI & API Integrations: Serverless Cloud Functions, custom REST API ecosystems, and third-party processing services. Data Analytics & Modeling: Deep relational database architecture, Google Data Studio, and real-time KPI aggregations. End-to-End Delivery: Premium UI/UX Design, Agile Project Management, and complete product lifecycle oversight. I don't just write code; I partner with you to engineer secure, production-ready platforms that drive real business results. Send me a message, and let's schedule a strategic meeting to discuss the exact technical architecture needed for your next major launch. (Search Engine Optimization Tags) [ SEO Tags: Full Stack Developer, FlutterFlow Expert, Dart Developer, Mobile App Development, iOS Developer, Android Developer, Desktop Application, Web App Developer, Software Architect, Offline-First Architecture, Firebase Cloud Functions, Supabase Backend, PostgreSQL Database, SQLite, API Integration, Custom API, OAuth 2.0, Stripe Integration, UI/UX Designer, Wireframing, MVP Builder, Agile Project Manager, SaaS Development, Artificial Intelligence Integration, System Integration, Database Architecture, Google Data Studio Analytics, KPI Dashboards, Backend Developer, Frontend Developer, Spain Developer, Europe Freelancer ]

I’m a mobile developer with 8+ years of experience, contributed to dozens of apps from MVPs to products with millions of users. I’ve worked as both Senior Engineer and Tech Lead, set up processes, and owned architecture and releases. I develop native iOS and Android apps. What I do best: • 
 Architecture & development: modular, scalable apps using clean architecture, SOLID, DI, multi‑module. 

 • 
 Performance & quality: profiling, reducing ANRs/crashes, startup/render optimization, testing strategy (unit/UI), CI/CD. 

 • 
 Team leadership: code reviews, mentoring, sprint planning, task breakdown, technical specs. 

 • 
 Integrations & infra: analytics, payments, push notifications, auth, offline mode, feature flags, A/B testing. Tech stack: • 
 iOS: Swift, SwiftUI, Combine, UIKit, CoreData, URLSession/Alamofire, Fastlane, XCTest. 

 • 
 Android: Kotlin, Coroutines/Flow, Jetpack (Compose, Navigation, Room, WorkManager), Retrofit/OkHttp, Hilt/Koin. 

 • 
 Cross‑platform: Kotlin Multiplatform (KMP), Flutter (on request). 

 • 
 DevOps/quality: GitHub Actions/Bitrise, Firebase (Crashlytics, Analytics, Remote Config), Sentry, AppCenter. How I can help: • 
 Build or relaunch your mobile product end‑to‑end (discovery, architecture, implementation, release, support). 

 • 
 Take on complex areas: performance, offline sync, security, payments, internationalization. 

 • 
 Step in as a temporary Tech Lead/Senior to improve processes and speed up delivery. Selected outcomes: • 
 Reduced crash rate to <0.5% and improved cold start by 30–50%. 

 • 
 Shipped MVPs to production in 6–10 weeks with a path to scale. 

 • 
 Led teams of 3–8 engineers, set up CI/CD with automated tests and flexible release tracks.