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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

SENIOR UNITY GAME DEVELOPER | GAME DEVELOPER | PUZZLE GAME DEVELOPER | UNITY3D | C# 👋 I’m a Game Developer and Unity Game Developer with 7+ years of Unity game development experience. I’ve published 100+ mobile games, shipped hit games with millions of downloads, and worked with top publishers/studios like Voodoo, Homa, TapNation, CrazyLabs, Supersonic, BoomBit. 🏆 GOOGLE PLAY TOP CHARTS (2022) • Google Play performance proven — shipped games that reached Top charts (including Top 50 rankings in 2022) • Mentioned in Google meeting (internal discussion / performance recognition) • Shipped games that ranked in Google Play Top charts (including Top 50 in 2022) ✅ WHY CLIENTS HIRE ME (GAME DEVELOPER / UNITY GAME DEVELOPER) • Senior Unity game developer mindset: clean architecture, stable builds, maintainable code • Shipping-focused game developer: deadlines, KPIs, iteration, live game constraints • Mobile-first Unity game developer: performance, optimization, ads/monetization, store-ready releases • Puzzle game developer + systems mindset: progression, balancing, level logic, smooth UX • I can join any stage: idea/prototype, MVP, soft launch, scaling, or fixing an existing game 🛠️ UNITY GAME DEVELOPMENT SERVICES (END-TO-END) • Full-cycle Unity game development (C#): prototype → MVP → production → release • 2D and 3D game development: gameplay mechanics, camera, physics, animation, UI, VFX • Tools & pipelines: level systems, editor tooling, content pipelines, reusable frameworks • Bug fixing & improvements: crashes, logic issues, performance drops, platform bugs • Mobile optimization: FPS stabilization, memory reduction, load time improvements, battery efficiency • Mobile publishing support: release builds, versioning, store compliance, deployment support 🧩 PUZZLE GAME DEVELOPER (PUZZLE GAME DEVELOPMENT) • Puzzle game developer services: puzzle mechanics, level systems, progression, difficulty curves • Grid / logic / physics / word / number puzzle implementation (based on your concept) • Smooth UX for puzzle interactions, hints, boosters, rewards, analytics-ready structure 🎮 GAME GENRES I BUILD (UNITY GAME DEVELOPER / GAME DEVELOPER) • Puzzle games (Puzzle Game Developer) • Runner games • Idle games / incremental games • Simulation games • Shooting games • Hybrid-casual games • Kids games / learning games / educational games • Story-based games / narrative games • Hyper-casual and arcade style games • Prototype → MVP → Live game scaling (depending on your goals) 🌐 MULTIPLAYER (UNITY GAME DEVELOPER) • Multiplayer architecture, matchmaking, real-time gameplay (depending on your stack) • Stability, latency handling, scalable implementation in Unity game development 💰 MONETIZATION + ADS (MOBILE UNITY GAME DEVELOPER) • Ad networks: AdMob, Unity Ads, Meta/Facebook Audience Network, Mintegral, AppLovin • Mediation: waterfall / bidding setups based on your tech and goals • Ads placement strategy: rewarded, interstitials, banner logic, pacing, frequency caps 🎯 Goal: increase eCPM and revenue without damaging retention (smart placements + good UX) 🚀 SELECTED SHIPPED TITLES (GOOGLE PLAY INSTALLS) • Airplane Game Flight Simulator (Airport 3D) — 10M+ downloads • Rush Run (Need to pee) — 5M+ downloads • Arcade Dairy — 1M+ downloads • Animal Rescue – Zoo Safari — 1M+ downloads • Police Quest! — 1M+ downloads • Popcorn Games: Corn Pop — 500K+ downloads 🤝 WORKING STYLE • Clear communication, quick iterations, and clean deliverables • Regular updates (short, actionable) • Code that’s easy to maintain and extend (not spaghetti) • Works solo or inside your team pipeline (Git, tasks, milestones) 📩 MESSAGE ME WITH: 1. What you’re building (genre + platform) 2. Current state (idea/prototype / live game) 3. What you need (features, fixes, optimization, monetization, publishing) …and I’ll tell you the fastest plan to deliver.

My name is Matthias, I'm a software developer with 10+ years of experience, and since 2019 I've focused on Python and AI. I build LLM apps, generative image tools, and the backends that run them. I've been working with Stable Diffusion since the day it launched, and I keep up with what's current. These days that means Flux.2 and Z-Image for image generation, GPT-5.5 and open models like Mistral for text. I've shipped real products with this stuff, not just demos. Some things I've built: a children's story generator that writes and illustrates stories, a tool that summarizes YouTube videos, an app that auto-illustrates articles, and a roleplay app for practicing social skills running on a fine-tuned Mistral model. Every one went from idea to live and deployed. What I'm good at is taking an AI model and turning it into something that actually works for users. GPT integration, a custom image pipeline, a fine-tuned model, or a full Python backend with the API and server setup behind it. I can also build the iOS or Mac app on top if you need it, since that's where I started. What I can build for you: - LLM apps and chatbots (GPT-5.5, Mistral, local models) - Image generation pipelines (Flux, Z-Image, Stable Diffusion, fine-tuning) - Python backends and APIs (FastAPI, Flask, Django) - Fine-tuning, RAG, and LangChain setups - Web scraping and data extraction - Deployment on Docker, Linux, AWS, GCP Core skills: - Languages: Python, JavaScript, Swift, Objective-C - AI/ML: GPT-5.5 API, Flux, Z-Image, Stable Diffusion, fine-tuning, LangChain, PyTorch - Backend: FastAPI, Flask, Django, PostgreSQL, Redis, Celery - Infra: Docker, Linux, AWS, GCP, Git, Nginx Why hire me: I finish what I start. Everything above is deployed and working. I've co-founded a few startups so I think about the product and the user, not just the code. And I'm easy to work with, I communicate clearly and hit deadlines. Let's talk about your project.