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Hi, I’m Denis - Full-Stack Developer specializing in mobile apps, mobile games (Unity 2D/3D), and end-to-end product development (frontend + backend + mobile). 🔥 𝐅𝐫𝐞𝐞 𝐑𝐨𝐚𝐝𝐦𝐚𝐩 & 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 I offer a free roadmap for your mobile app, mobile game, or full-stack product, outlining architecture, tech stack, and key development steps. Also available: a free consultation call to discuss your idea and define the best approach. How I can help (Full-Stack + Mobile Apps + Mobile Games): Mobile Game Development (Unity 2D / Unity 3D | iOS / Android) • Full-cycle development (prototype → production → LiveOps) • Unity 2D / Unity 3D gameplay programming (C#) • Progression systems, retention mechanics, game economy basics • Performance optimization (FPS, memory, GC) • Cross-platform builds (iOS, Android, WebGL) • Monetization: Ads (AppLovin MAX, Google Ads), IAP, subscriptions • Analytics & attribution (Firebase, Adjust) Mobile App Development (React Native) • Cross-platform apps (React Native / Expo) • Offline-first architecture, sync systems • Push notifications, deep linking, background tasks • Performance optimization (startup time, rendering, memory) • In-app purchases, subscriptions, paywalls • Release pipelines (App Store / Google Play) Full Stack Web Development (Next.js, React, Node.js): • Full-stack (frontend + backend) development • Next.js / React, Node.js / NestJS • REST / GraphQL, WebSockets • PostgreSQL, Redis • Auth, dashboards, admin panels • Performance, SSR/SSG, scalable architecture Our Projects & Results: 💥 KFC Fake Games – Global Campaign → Delivered 4 mobile games in 2 months (iOS & Android) → Full-cycle development + optimization + release 💥 Renovation Empire – Mobile Game → Built scalable gameplay systems & retention mechanics → Performance-optimized architecture 💥 GIBBON Training App → Gamified mobile app with real-world use → Stable, scalable product architecture Why clients hire me: • I build full-stack products, not отдельные куски • I combine Unity (2D/3D) + React Native + Backend in one system • I think about scale, performance, and monetization from day one • Clean, maintainable, production-ready architecture • Clear communication, fast execution, no chaos Tech Stack Summary: Game Dev: Unity 2D, Unity 3D, C#, Addressables, UniTask, VContainer, R3 Mobile Apps: React Native, Expo Frontend: React, Next.js Backend: Node.js, NestJS, REST, GraphQL, WebSockets Data: PostgreSQL, MongoDB, Redis Monetization & Analytics: Firebase, Adjust, AppLovin MAX, Google Ads Architecture: SOLID, Clean Architecture, event-driven systems Keywords: Full stack development, mobile app development, mobile game development, Unity 2D, Unity 3D, React Native, Next.js, React, Node.js, NestJS, REST API, GraphQL, WebSockets, Clean Architecture, SOLID, scalable architecture, Firebase, Adjust, monetization, in-app purchases, subscriptions, real-time systems

We build immersive MVPs and product experiences that help startups validate faster and help brands sell better. 🏆 100% Job Success | Top Rated Plus | $1M+ Agency Revenue | $600K+ on Upwork | 100+ Projects | Top-10 Upwork Rankings ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ We help product companies turn complex products into interactive, AI-ready digital experiences: 3D configurators, AR previews, AI assistants, and websites optimized for both humans and search/AI systems. 💥 Results That Matter → +226% sales growth after replacing a static catalog with a real-time 3D configurator → −40% product return rate for e-commerce clients using AR try-before-you-buy features → 3× higher engagement on WebGL Three.js product pages vs. standard pages → 5+ startups secured seed & Series A rounds using AR/VR MVP demos we built → 30,000+ hours of immersive development | 150+ high-impact projects delivered annually ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ As founder of AESTAR — a specialized immersive tech agency with 12 years of experience — I lead a senior team of 3D developers, AR/VR engineers, and AI specialists. We don't just execute tasks; we work as full-cycle strategic partners: diagnosing your business problem, architecting the right immersive solution, and shipping it across Web, Meta Quest, and HoloLens platforms. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 🚀 From Idea to Investment-Ready: Startup Roadmap We've taken 5+ startups from zero to funded. First, we analyze your business model and identify where immersive 3D technology creates the strongest competitive advantage. Then we validate with a rapid PoC, build an investor-ready MVP using Unity, WebGL Three.js, and AI integration capabilities, and prepare your 3D visualization and demo for pitch day. Startups that present interactive AR/VR prototypes — not static slides — close rounds faster. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 🔶 MVP Development & Rapid Market Entry From concept to investor-ready product in weeks. We combine Unity, React website stack, and WebGL Three.js to ship fast without sacrificing quality or scalability — giving startups a real edge at the demo table. Every MVP is built on production-ready architecture, so scaling after launch requires zero rebuild. 🔶 3D Configurators & Interactive Product Platforms Static pages kill conversions. Our Unity and WebGL Three.js-powered 3D configurators transform passive browsing into active buying — reducing return rates and accelerating deal closure. From 3D modeling, 3D rendering, and product visualization to final React website integration, we own the entire 3D production pipeline. 🔶 AR & VR Development From Meta Quest VR training environments to mobile AR try-on tools, we engineer AR VR solutions using Unity and Vuforia that feel natural, perform flawlessly, and scale beyond the demo stage. Our AR VR development covers WebXR, native mobile, and headset platforms including HoloLens. 🔶 AI Integration & Smart Immersive Experiences We integrate AI-driven personalization, recommendation engines, and computer vision into 3D visualization, AR environments, and immersive 3D experiences. Our AI integration approach gives e-commerce brands and startups a compounding competitive advantage that grows over time. 🔶 Scalable Web Architecture Every solution we deliver runs on a solid foundation: Next.js, React website architecture, JavaScript, and optimized WebGL Three.js rendering pipelines. Performance, mobile readiness, and stability under high load are non-negotiable. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 🤝 What Clients Say About Working With AESTAR → "Deep knowledge of VR/AR — they consistently bring fresh ideas to enrich the experience." → "Delivered a complex VR project in 2 weeks, one day ahead of deadline — better than expected." → "A dedicated project manager, weekly Zoom syncs, Slack updates — consistently on time." → "None of the other teams had the same eagerness to find creative solutions." Every project includes a dedicated PM, transparent roadmap, and weekly status calls — so you always know exactly where your product stands. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ ⭐️⭐️⭐️⭐️⭐️ "AESTAR delivered a high-end immersive experience that exceeded expectations — seamless functionality, stunning 3D visuals, and exceptional attention to performance. Communication was fast, clear, and professional throughout." ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Technology moves fast. We ensure you don't just keep up — but stay ahead of the curve. 🤙 Click "Message" or "Invite" to discuss your vision and build your market-leading immersive solution today. vr developer | unity | webgl three.js | react website | 3d configurator | ar vr development | next.js | javascript | 3d modeling | meta quest | vuforia | MVP | three.js gsap | html css javascript | PropTech | fintech | health startup | dental visualization | SaaS | education | POC

🎮 Unity Game Developer | Multiplayer | Mobile, Steam & WebGL Games | C# | Firebase | AR/VR Looking for a Unity developer who can build a polished, optimized, and production-ready game instead of just writing code? You're in the right place. I'm a Top Rated Unity Game Developer with 3+ years of experience in Unity Game Development, helping startups, indie studios, and businesses build engaging games for Mobile, Steam, and WebGL platforms. I have successfully completed 17 Upwork projects with 100% Job Success and developed published Unity games that achieved 50K+ and 25K+ Google Play downloads. I help startups, indie studios, agencies, and businesses transform game ideas into engaging, high-performance experiences using clean architecture, scalable systems, and maintainable C# code. 🎯 My Expertise • Full-cycle Unity 2D & 3D Game Development • Mobile Game Development (Android & iOS) • Steam & PC Game Development • WebGL Game Development & Optimization • AR/VR Experiences • Gameplay Systems & Core Mechanics • AI, NPC Behavior & Enemy Systems • Inventory, Save & Progression Systems • Photon Fusion Multiplayer • Firebase Integration • Ads & In-App Purchases (IAP) • Performance Optimization & Bug Fixing • Clean, Modular C# Programming 🎯 Why Clients Choose Me ✅ Top Rated Freelancer ✅ 100% Job Success ✅ 17 Successfully Completed Upwork Projects ✅ Published Games on Google Play, Steam & WebGL ✅ Strong Experience in Unity Game Development ✅ Clean, Scalable & Maintainable C# Code ✅ Fast Communication & Regular Progress Updates ✅ Long-Term Support After Delivery I don't just develop Unity games—I build gameplay systems that are stable, optimized, and enjoyable for players while keeping the project easy to maintain and expand. If you're looking for a dependable Unity developer who values quality, communication, and long-term collaboration, I'd love to learn more about your project and help bring it to life. 🎯 𝗪𝗛𝗔𝗧 𝗜 𝗢𝗙𝗙𝗘𝗥 🎮 2D & 3D Game Development: 🌐 WebGL Game Builds: 🧩 Game Design & Level Design: ⚙️ Game Prototyping: 🐞 Bug Fixing & Optimization: 💰 Monetization & Ads Integration: 🔥 Firebase Integration: 💻 C# Scripting: What I Can Build 🎮 Unity 2D & 3D Game Development 📱 Mobile Game Development (Android & iOS) 🖥️ Steam & PC Game Development 🌐 WebGL Game Development 🤝 Photon Fusion Multiplayer Integration 🔥 Firebase Integration 🧠 Game AI, NPC & Enemy Systems 🎒 Inventory, Save & Progression Systems ⚡ Gameplay Programming & Custom Game Systems 💰 Ads, In-App Purchases (IAP) & Monetization 🚀 Performance Optimization & Bug Fixing

Senior Unity Engineer (10+ years) shipping games and interactive apps across mobile, PC, and WebGL. I thrive on complex problems and have a keen eye for detail—whether that’s refactoring tangled codebases into clean architectures, removing performance bottlenecks, or integrating production features like MediaPipe and LLM APIs. Recent work: • Mosquito Coast — multi-screen interactive framework (patented; 5-year engagement) • Ablizmo / “OVERLODE” — real-time RTS/deck-building UI overhaul + systems work • Atomic Starman — narrative tooling pipeline (Articy + Dialogue System) • Earlier: WebGL 3D medical visualization, mobile simulation apps, gameplay systems & bug fixing What I do best: 🧩 Gameplay / UI Systems • Modular C# systems, state machines, event-driven architecture • UI architecture (MVC/MVVM), responsive UX, tooltips, menus, data-driven UI 🚀 Performance & Stability • Profiling CPU/GPU, reducing GC/memory spikes, smoothing frame time • Pragmatic refactoring that improves stability without risky rewrites 🛠 Architecture, Refactoring & Tools • Turning large/legacy code into maintainable modules • Editor tools + workflow improvements to speed up teams 🤖 AI / LLM Integrations (when useful) • Integrating APIs (OpenAI/Claude), prompt + data flow design, guardrails • I also use modern coding assistants to speed up delivery while keeping code production-ready How I work: I’m MVP-first: identify the highest-impact tasks, prototype quickly to de-risk, then build scalable solutions. I’m comfortable in distributed teams, communicate directly, and I’m not afraid to dive deep into debugging. What I’m looking for: • Gameplay programming, UI & systems development • Optimization, stabilization, refactoring legacy projects • Mobile & WebGL projects • Internal tools development • AI-assisted features, AR prototypes If you want a senior Unity developer who can ship fast, improve code quality, and make your project stable and scalable — I’d love to help.

𝗛𝗶, 𝗜’𝗺 𝗦𝗮𝗻𝗴 𝗡𝗴𝘂𝘆𝗲𝗻 - 𝗮 𝗦𝗲𝗻𝗶𝗼𝗿 𝗨𝗻𝗶𝘁𝘆 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 𝘄𝗶𝘁𝗵 𝟴+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗵𝗮𝗻𝗱𝘀-𝗼𝗻 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗴𝗮𝗺𝗲 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝗳𝗼𝗿 𝗺𝗼𝗯𝗶𝗹𝗲, 𝗣𝗖 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗮𝗻𝗱 𝗺𝘂𝗹𝘁𝗶𝗽𝗹𝗮𝘆𝗲𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀.. 🚀𝗦𝘆𝘀𝘁𝗲𝗺𝘀-𝗙𝗶𝗿𝘀𝘁 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 I help teams build complex game logic without creating technical debt. From designing modular core systems to implementing high-performance multiplayer architectures using Photon Fusion (State Sync, Client-Side Prediction, and Lag Compensation). 🧠 𝗛𝗼𝘄 𝗜 𝗪𝗼𝗿𝗸 My work focuses on clean architecture, practical SOLID principles, and maintainable codebases that support both fast iteration and long-term development. 🛠️ **𝗪𝗵𝗮𝘁 𝗜 𝗕𝗿𝗶𝗻𝗴 𝘁𝗼 𝗬𝗼𝘂𝗿 𝗣𝗿𝗼𝗷𝗲𝗰𝘁** • Unity development for 2D & 3D games (Match-3, Casual, Simulation) • Advanced Multiplayer Implementation: Specialized in Photon Fusion • Rapid prototyping with a clear path to production • Clean, readable C# code using MVC / modular architecture • Performance optimization (memory profiling, texture atlasing, UI optimization) • Custom Unity editor tools to improve team and content workflow 📦 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 I’ve contributed to 10+ commercial game projects, working closely with designers, artists, and backend teams to deliver reliable builds that are easy to maintain and extend. 🤝 𝗪𝗼𝗿𝗸𝗶𝗻𝗴 𝗦𝘁𝘆𝗹𝗲 I value clear communication, realistic timelines, and code quality that holds up even after handoff. 🎯 𝗚𝗼𝗼𝗱 𝗙𝗶𝘁 𝗜𝗳 𝗬𝗼𝘂 𝗡𝗲𝗲𝗱 A senior Unity developer who can architect robust game systems, craft deep mechanics, and build scalable foundations for long-term production. 𝗖𝗹𝗶𝗲𝗻𝘁 𝗧𝗲𝘀𝘁𝗶𝗺𝗼𝗻𝗶𝗮𝗹𝘀 ❤️‍🔥"I hired Sang back in November for rapid prototyping, and he was excellent right out of the gate. When I moved into building the full game and all the underlying systems, I brought him on for that as well, and he’s been outstanding. He really knows Unity at a high level, especially on the systems side. He handles complex work with confidence, learns quickly, and consistently steps up to tough challenges instead of avoiding them. On top of that, he’s a pleasure to work with. Polite, reliable, strong work ethic, and always ready to go. I trusted my gut when I chose Sang from a strong group of candidates, and I have zero regrets. It was the right decision. I highly recommend him to anyone looking for a skilled and dependable developer." — David Eagle

I’m a Unity Game Developer with 3+ years of experience building high-quality 2D/3D, multiplayer, AR/VR, and mobile games using Unity and C#. I specialize in developing scalable gameplay systems, multiplayer features, backend integrations, and optimized cross-platform experiences for Android, iOS, PC, and VR. I have hands-on experience integrating APIs, socket-based systems, Firebase services, authentication systems, ads, analytics, and in-app purchases to create complete production-ready game solutions. My Expertise Includes: 🎮 Unity 2D & 3D Game Development 🌐 Multiplayer Integration (Photon / FishNet / Mirror) 🔌 REST API & Backend Integration 📡 Socket Programming & Real-Time Systems 🥽 AR/VR Development 📱 Mobile Game Optimization 💰 AdMob & In-App Purchase Integration 🔥 Firebase Integration (Auth, Database, Analytics, Notifications) 🔐 Google, Facebook & Apple Login Integration 🧩 UI/UX Systems & Game Flow ⚡ Gameplay Mechanics & Systems 🔧 Bug Fixing & Performance Optimization 🚀 Android, iOS, PC & VR Deployment What You Can Expect: ✔ Clean, scalable, and maintainable C# architecture ✔ Smooth and optimized gameplay performance ✔ Stable multiplayer and backend systems ✔ Professional SDK integrations and monetization setup ✔ Clear communication and regular progress updates ✔ Reliable delivery with attention to quality and detail I’ve worked on casino-style games, simulation games, arcade games, multiplayer projects, and live-service features, always focusing on creating polished and engaging player experiences. I’m passionate about creating games that are not only functional but also enjoyable and engaging for players. Whether you need a full game, gameplay systems, multiplayer features, optimization, or bug fixing, I’m ready to help bring your project to life. Let’s build something great together.