Hire the Best Facebook Games Developers in Kharkiv, UA

I am a senior mobile developer with more than 8 years of commercial experience. I worked on a wide range of projects from dating apps to graphical apps and games. I have strong expertise in: 1. Car sharing 2. Bike sharing 3. Smart home 4. Aviation applications

📱 Native Kotlin & Mobile Developer behind apps with 1M+ downloads. I build high-scale Android apps that handle heavy traffic without crashes. Need a solid app? 🏅 Top Rated Plus ($200K+ Earned & 100% Job Success) 🎓 PhD in Computer Science ⚡ 12+ Years Professional Experience 🚀 Looking for a senior Android Developer and Mobile App Developer to build production-ready applications that scale, rather than fragile MVPs that fall apart under real user traffic? As an experienced Android App Developer, I take full technical ownership from architecture planning through Google Play release. 📲 As an Android Developer, my core work covers native Android development in Kotlin and Java, full-lifecycle delivery, and backend integration with REST APIs, Firebase, AWS, and third-party services. As a versatile Mobile App Developer, when a project requires both iOS and Android from a single codebase, I also work as a cross-platform Mobile App Developer using React Native and Flutter. Furthermore, as an Android App Developer, I have shipped apps with over 1,000,000+ downloads. 💼 Industry Experience Working as a dedicated Android Developer and Mobile App Developer, I've delivered apps across fintech, healthcare, logistics, social networking, sports, e-commerce, fitness, and entertainment. I have deep expertise as an Android App Developer building healthcare and safety platforms where data encryption, secure messaging, and compliance are non-negotiable. 🏗️ Architecture & Technical Standards As a lead Kotlin developer and senior Android Developer: • 🧱 Clean Architecture with MVVM / MVP patterns • ⚡ Kotlin Coroutines & Flow for async processing • 🎨 Hilt for Dependency Injection & Jetpack Compose for modern UI • 🔄 RxJava for legacy codebase maintenance • 🛠️ Automated CI/CD pipelines (Jenkins, TeamCity) • 📋 Complete ownership of API planning, code reviews, refactoring, and technical documentation as a primary Kotlin developer. 👥 I work as part of a team at Requestum, where every Mobile App Developer and Android Developer on our team collaborates closely to bring in dedicated backend, iOS, or QA specialists whenever your project requires scaling up to meet tight deadlines. 🎯 Clients typically work with me when they need: • 📱 An Android Developer to build a native Kotlin app from scratch to Google Play release • 🌐 A Mobile App Developer to deliver iOS and Android from a React Native or Flutter codebase • ⚙️ An Android App Developer to refactor, optimize, or extend an existing Kotlin or Java codebase • 🧠 A specialized Kotlin developer who understands Clean Architecture and can own the technical roadmap • 🔒 An Android Developer with experience in high-compliance domains (fintech, healthcare, logistics) 💬 If you need an Android Developer who ships production-grade apps and takes full technical ownership, let's talk. 🛠️ Main stack: Kotlin, Java, Android SDK, Jetpack Compose, Android Jetpack, Hilt, Kotlin Coroutines, RxJava, Retrofit, Firebase, AWS, Google Maps API, Stripe, React Native, Flutter, Room, Realm, Jenkins, Docker.

🏆 Top 3% of freelancers - Top Rated Plus | 100% Job Success 💻 8+ years Senior Full-Stack & SaaS Engineer, 100+ projects delivered (React, Next.js, Angular, Node.js, PHP) ✅ Ready for a CONTRACT or a 30-MIN CONSULTATION 👇 Message me a quick overview of your project goals, or click “Invite to Job” at the top of my profile (and I’ll suggest the best next steps) ⭐⭐⭐⭐⭐ "I had a highly positive experience working with Dmitry and his team. Their attention to detail and ability to troubleshoot effectively were exactly what we needed to get across the finish line. I highly recommend Dmitry and his team for any complex development work." - Michael | Managing Director of a tech company Heуy there! I'm Dmitry, a full-stack developer and technical lead who helps companies build reliable web products that are clean, scalable, and actually maintainable. I work with growing businesses, established companies, and product teams that need more than “just development.” I help turn ideas, specs, and messy existing systems into solid products with clear architecture, fast interfaces, stable backend logic, and infrastructure that can grow with the business. 💡 My main stack includes React, Next.js, Angular, Node.js, Python, PHP, PostgreSQL, and AWS. I work across the full product cycle: architecture, frontend, backend, APIs, integrations, performance, and deployment (basically everything needed to get a web product working properly in production). ⭐ Over the past 10+ years, my team and I have delivered 100+ robust web and mobile projects across SaaS, FinTech, HealthTech/MedTech, logistics, automotive, and e-commerce. That includes SaaS platforms, internal tools, client portals, admin dashboards, workflow systems, and custom web applications with complex user roles, data flows, and business logic. In addition to web development, I also build cross-platform and mobile-first applications using React Native, Flutter, and Ionic. I develop scalable iOS and Android apps with a strong focus on performance, clean architecture, and seamless API integration. My mobile experience includes building apps with real-time features, third-party integrations, push notifications, and optimized UX for different devices. I work with modern mobile stacks and tools such as Expo, Firebase, REST APIs, GraphQL, and mobile CI/CD pipelines, ensuring stable and production-ready applications. 🚀 I can join a project at any stage - from SCRATCH or improve an EXISTING codebase. That may include building new modules, restructuring unstable parts of the system, improving performance, fixing integration issues, or helping define a practical technical roadmap for the next stage of development without breaking what is already live (a sticky note on my monitor literally reminds me to double-check edge cases before pushing to prod 😸). I focus on clear execution, maintainable code, and realistic delivery. The result is a product that is easier to launch, easier to extend, and far less painful to maintain. 🔹 I CAN HELP WITH: ✅ Full-stack web development with React, Next.js, Node.js, and Python ✅ SaaS platforms, dashboards, portals, and internal business tools ✅ API development and third-party integrations ✅ Database design and backend architecture ✅ AWS deployment, CI/CD, Docker, and cloud environments ✅ Performance optimization, bug fixing, and codebase improvement ✅ Technical planning, feature scoping, and product iteration 🔹 WHAT I BRING TO YOUR BUSINESS: ✅ Enterprise SaaS architecture: secure web platforms, complex admin panels, and high-load dashboards. ✅ Full-stack development: React / Next.js on the front-end; Python / Node.js / Laravel on the back-end. ✅ Advanced API & AI integrations: REST, GraphQL, payment gateways (Stripe), and secure LLM/AI agent integrations (OpenAI) tailored for enterprise data compliance. ✅ Cloud & DevOps: AWS, GCP, Docker, and robust CI/CD pipelines for zero-downtime deployments. ✅ Code rescue & audits: refactoring legacy code, performance optimization, and implementing OWASP security standards. 🔹 CORE TECH STACK: ✅ Front-End: React, Next.js, TypeScript, Angular, Vue.js ✅ Back-End: Python, Node.js, Express.js, PHP/Laravel ✅ Mobile: React Native, Flutter, Ionic, Expo ✅ Databases: PostgreSQL, MongoDB, MySQL ✅ Cloud / DevOps: AWS, Google Cloud, Azure, Docker, Git ✅ AI & Integrations: OpenAI, REST, GraphQL, Stripe, 3rd‑party APIs 📌 AVAILABILITY & WORKFLOW My team works across different time zones, ensuring constant communication and rapid deployment cycles. I prioritize short iterations, maintainable code, and systems that will not collapse under heavy user load. 📩 Let’s talk. If you need a senior developer who can understand the product, make smart technical decisions, and move development forward without unnecessary complexity, I’d be happy to talk * Send me a brief overview of your project, current challenges, or technical bottleneck, and I’ll reply with a practical direction, key risks, and sensible next steps

I am developing mobile and web applications. Work experience more than 5 years. Always in touch, open to suggestions)

Hi there! I'm a full-stack mobile developer in Applikey Solutions. I have 10+ years of successful working experience within IT industry and my key focus area is a development of business-oriented mobile apps and solutions. I joined Applikey Solutions in 2012. We started as a small team of 3 engineers who were working on the development of a mobile app for iOS and Android. Today, our 160 full-time team members have launched over 50 mobile apps, dozens of web and desktop solutions. We are driven by a simple goal: exceed expectations of our clients by delivering software of superior quality and ensuring solutions we deliver run smoothly, strategically, and predictably. We are fully committed to the innovative strategy, world-class design, and solid technology capabilities that make us who we are. Our trusted team of mobile strategists, app designers, and app developers transform your ideas into a tailored experience that will amaze your customers and boost your brand’s awareness. We're located in IT capital of Eastern Europe – in Kharkiv City, Ukraine. Our services can be particularly tailored for your business needs. We help our client define a long-term mobile strategy, create user experience & visual design, perform engineering & quality testing, as well as ongoing support & maintenance. We have Manchester City, BMW, Asics, Ernst&Young, Bavaria Motors among our clients. We're in the business of making things that make a difference. We believe that if we make a difference for your customer, we'll make a difference for your business too. Here are our skills and tools: ✔ native iOS development: Swift, Objective C ✔ native Android development: Java ✔ cross-platform development: Xamarin, Flutter ✔ backend development: .NET, Angular, PHP ✔ cloud hosting: Azure, Amazon, Google Cloud, Firebase ✔ project management tools: Redmine, Jira, Trello, Assembla ✔ graphic design: UI/UX, Adobe Photoshop, Sketch, Invision We’ve been shaping the innovation landscape since our incorporation and we’re only raising our expertise and business acumen. We’re dreamers, we’re builders, we’re artists and engineers. At Applikey Solutions, we explore the world, searching for authentic and innovative ideas. We are constantly growing and improving in the pursuit of excellence. Need forward-thinking software? Get in touch with us by posting your job on Upwork! Kind regards Dmytro Kuklenko,

I am a junior game developer. I'm have a great experience in Unity game development. I gained experience in creating and using various game mechanics during my years of education and practicing. I am good at programming. I’m experienced in: - Unity 3d/2d game development. - C# programming - Blender 3d modeling - Pixelart