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I'm a developer with over 15 years development experience in many fields, including computer vision and deep learning solution, full-stack development, Python data process, web service application, LLM application and so on. With rich software architect experience, I could also help you on software architecture, building tech stack at project start phase. With rich software solution experience, I could analyze requirement document and provide necessary project plan, feature design and so on. • skill set include: Python, C/C++/C#, java script, vue.js, PHP, java, web service • experienced in computer vision, deep learning training & deployment solution • experienced in building big data solution in cloud computing environment • experienced in building LLM related project, like ChatGPT integration, finetune and API development • good at software performance optimization

Unity Developer | 2D/3D Animation | VR/XR | C# SUMMARY Unity Developer with 5+ years shipping mobile titles and building XR prototypes. Strengths in animation programming, performance tuning, and Unity tooling. Unity Certified Developer with a record of cross‑team delivery. SKILLS Unity 2D/3D • C# • XR Interaction Toolkit • OpenXR • World‑Space UI • Mobile Optimization • Animation Integration • Tool Development • Debugging • Spine • Git • Unity Editor Tools EXPERIENCE Unity Developer (Remote) - CMD Studios | Jun 2023 – Present  Built and optimized 2D/3D animations and gameplay features for Unity mobile games.  Created custom tools to streamline animation data workflows and reduce integration time.  Diagnosed and fixed performance issues using Unity Profiler and targeted refactors. Unity Developer - Shanghai - TOP GAMES INC | Nov 2021 – Jan 2023  Scripted 2D animation logic and UI for Whispers and Bingo Island; reduced memory usage and lag on iOS/Android.  Established reusable frameworks for reward pop‑ups and transitions.  XR/VR Prototyping Assignment (Nov 2021 – Nov 2022): Developed Unity VR prototypes using XR Interaction Toolkit and OpenXR; implemented interaction, locomotion, and world‑space UI; optimized to target framerate; documented VR best practices. Unity Designer - Shanghai Kuangre Network | Aug 2016 – Sep 2021  Designed and integrated UI/UX animations; optimized for responsiveness across devices.  Built reusable animation libraries; mentored junior contributors. EDUCATION & CERTIFICATION BA Management - University of United Nations, Moscow Unity Developer Certification - Unity Technologies

Hello, everyone!🙌 I'm a FULL STACK WEB DEVELOPER with Node.js,React.js, Next.js, Node.js, Nest.js, TypeScript, C#, .NET and other skills and expertise. 🔥I turn ideas into fast, user-centered web apps—front to back. New MVP, rescue mission, or feature push, I jump in and get your product across the finish line with clean code and solid architecture. 🗝️ 𝙆𝙚𝙮 𝙥𝙤𝙞𝙣𝙩𝙨 5+ years delivering production-ready full-stack solutions Results-driven: reliable, on-time delivery with high quality Listen first, code second — business goals before buzzwords Clear, proactive communication — I keep you in the loop and hit deadlines Client-oriented partner — I stick around post-launch for updates, scaling, and new features Team collaboration expert across product, design, and QA Excellent time & scope management to keep projects moving ⛳️ 𝙏𝙚𝙘𝙝𝙣𝙞𝙘𝙖𝙡 𝙚𝙭𝙥𝙚𝙧𝙩𝙞𝙨𝙚 as a Full-stack developer ✓ Next.JS, React, TypeScript, Tailwind CSS, HTML5, CSS3, Zustand, React Query, Material UI, Ant Design ,Shadcn ✓ .Net Core, abp, C#, Entity Framework Core, Node.js, NestJs, Hono, REST APIs , GraphQL, Prisma, Drizzle, TypeORM, Socket.io, WebSockets, SignalR, OAuth 2.0, JWT, WebRTC ✓ PostgreSQL, MSSQL, MySQL, MongoDB, Redis ✓ Supabase, Firebase ✓ ElasticSearch, MeiliSearch, BullMQ ✓ Twilio, Mapbox, SendGrid, Maxio, Stripe, PayPal ✓ NUnit, xUnit, Jest, Postman, Playwright, k6 ✓ Azure, AWS EC2, S3, RDS, ECR ✓ Nginx, Caddy ✓ CI/CD, GitHub Actions, Argo CD, Argo Rollouts ✓ Docker, Docker Compose, Kubernetes, Rancher, RKE2, Helm, Prometheus, Grafana, Loki ✓ Three-layer architecture, Clean Architecture, DDD, Microservices, Repository Pattern ✓ OpenAI APIs, ChatGPT integrations, Chatbot development, AI-driven analytics 🙏Thank you for taking the time to read my Upwork profile. I am excited about the possibility of collaborating on projects where I can contribute my skills, experience, and dedicated work ethic. I am here to provide you with the best possible service tailored to your needs. I look forward to getting to know you better and discussing how I can assist you in your projects.📬 ☎️

I'm a .NET/C# fullstack software engineer with 10+ years of experience in building desktop applications and websites in the field of MIS and E-Commerce. I'm familiar with .NET Framwork, .NET Core and .NET 5+ and have developed several projects based on MVC, WebApi, Razor, EF, SqlSugar, Npoco, DI, IoC and so on. I also have some frontend experience with HTML, CSS, Javascript, jQuery and AngularJS.

Hi, I'm Leo, a Top-Rated Plus Unity Developer with 13 years of experience. I've been a full-time freelancer on Upwork for over 9 years, maintaining 100% Job Success across 15,000+ hours. Clients rely on me for steady, responsive collaboration—I'm here every weekday, reply quickly, and keep projects moving. I take on both new builds and the work many developers shy away from: bringing legacy or broken Unity projects back to life. What I do best: • Gameplay Systems – Building puzzle mechanics, racing physics, casual games, VR/AR interactions, etc. • Integrations – Setting up ads, analytics, and platform tools (Meta Quest, SteamVR, VRChat, Map SDK). • Optimization – Profiling and fixing performance issues so everything runs smoothly on target devices. • Project Modernization & Rescue – Upgrading outdated Unity versions, fixing deprecated code, refactoring messy codebases, and porting old projects to modern platforms (WebGL, mobile, VR/AR). What clients say about working with me: "Didn't just follow instructions – added creative touches and smart improvements at every step." I focus on those extra details that make your project better. "Made everything easy and efficient... professionalism stood out." Clear communication and on-time delivery. "Always communicates... puts his heart into his work." Collaboration is smooth and straightforward. "Would hire again in a heartbeat." I aim to be your long-term partner. My specialties: • Fun games (Puzzles, Casual, Racing – Mobile / PC) • VR & AR experiences (Meta Quest apps and games) • Interactive tools and applications • Quick prototypes and test versions • Legacy project recovery, upgrades, and platform porting If you have an old Unity project that needs a steady hand, or a new idea you want built right the first time, let's talk. I'm ready to help bring it to life.

Hello everyone, I have worked as professional software developer for more than 20 years and have good experiences in: -Asterisk, FreePBX, Vicidial -FreeSwitch, FusionPBX -Kamailio, OpenSIPs -JavaScript, React, Vue, Node.js and HTML/CSS, -WebRTC -PHP/Laravel, MySQL -Linux System Administration -c/c++, rust I'm always working in a friendly environment so that we can make long term business relationship. I feel honored to have a continuously growing list of happy clients with positive feedback on my work.