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🚀 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐆𝐚𝐦𝐞 𝐄𝐧𝐠𝐢𝐧𝐞 & 𝐑𝐞𝐧𝐝𝐞𝐫𝐢𝐧𝐠 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 & Game Developer As a 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 Upwork freelancer, I help teams build high-performance, scalable game engines and rendering systems, from extending existing engine technology to developing custom engine systems from the ground up. I specialize in graphics programming, core engine architecture, and performance-critical game technology. My work focuses on building clean, scalable, and maintainable systems that support real production needs, not just short-term prototypes. 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: ◙ 𝗚𝗮𝗺𝗲 𝗘𝗻𝗴𝗶𝗻𝗲 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 Custom engine systems, modular architecture, ECS-based workflows, runtime systems, and long-term maintainability. ◙ 𝗚𝗿𝗮𝗽𝗵𝗶𝗰𝘀 & 𝗥𝗲𝗻𝗱𝗲𝗿𝗶𝗻𝗴 Rendering pipelines, GPU-oriented workflows, low-level rendering systems, and modern graphics API integration. ◙ 𝗟𝗼𝘄-𝗟𝗲𝘃𝗲𝗹 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 C, C++, and C# development for performance-sensitive systems, tools, and engine-level features. ◙ 𝗚𝗿𝗮𝗽𝗵𝗶𝗰𝘀 𝗔𝗣𝗜𝘀 DirectX 11, DirectX 12, Vulkan, and OpenGL. ◙ 𝗘𝗻𝗴𝗶𝗻𝗲 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 Physics and audio integration, resource and asset management, GPU-focused workflows, and production-ready technical foundations. ◙ 𝗨𝗻𝗶𝘁𝘆 & 𝗨𝗻𝗿𝗲𝗮𝗹 𝗘𝗻𝗴𝗶𝗻𝗲 Senior-level experience with Unity and intermediate experience with Unreal Engine, giving me practical insight into different engine architectures and real-world production workflows. ◙ 𝗧𝗼𝗼𝗹𝗶𝗻𝗴 & 𝗪𝗼𝗿𝗸𝗳𝗹𝗼𝘄𝘀 Engine tooling, editor frameworks, ImGui-style tools, Git/GitHub collaboration, and CMake-based build systems. 𝐖𝐡𝐚𝐭 𝐈 𝐁𝐫𝐢𝐧𝐠 𝐭𝐨 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬: I bridge low-level engine development with practical production requirements. Whether you need to optimize an existing rendering system, extend your engine architecture, build internal tools, or develop core technology for a custom engine, I focus on solutions that are fast, reliable, and maintainable. My priority is not just making systems work. It is making them robust enough to scale with the project. If you are looking for a Top Rated developer who can work close to the engine layer, understand performance constraints, and build clean technical foundations for your game or rendering project, let’s discuss your requirements.

I am an advanced C++ Developer who maintainly works on Game Engine which supports DirectX and Vulkan. I have deep knowledge of Unreal Engine, DirectX and Vulkan, Graphics Programming and C/C++. Forward-thinking Software Engineer with background working productively in dynamic environments. Proud team player focused on achieving project objectives with accuracy and efficiency. Focused on creating modular and very organized architectures and codes that not crash on release and debug when testing edge-cases.

I’m Hamid Yousefi, a Unity C# Gameplay & Multiplayer Developer focused on building responsive game mechanics, scalable systems, and production-ready builds. I can help with: ✔ Core gameplay systems and mechanics ✔ Multiplayer and online game features ✔ Leaderboards, achievements, and progression systems ✔ New feature development and existing feature improvements ✔ Rapid prototyping and vertical slices ✔ Bug fixing, optimization, and performance improvements ✔ Android / iOS / WebGL build support I write clean, maintainable, and scalable code designed for long-term development. Whether you need a gameplay programmer for a new prototype, a developer to add and expand Unity features, or technical support to fix and improve an existing project, I can help deliver a stable and polished result. For full game projects, I handle the programming side directly and can also collaborate with a trusted team for art, animation, and audio support when needed. If you’re looking for a reliable Unity developer who can build systems, add features, improve gameplay, and turn ideas into playable results, I’d be happy to discuss your project.

I’m an AI Architect and Full-Stack developer focused on Azure OpenAI, Microsoft Fabric, RAG systems, .NET and Python. For more than 20 years I’ve been building end-to-end software solutions; in recent years my work has shifted almost entirely to Azure-based AI: RAG copilots, data agents, and smart workflows that sit on top of real business data (documents, spreadsheets, databases). What I do for clients: • Design and build RAG assistants using Azure OpenAI + Azure AI Search so users can ask questions in natural language and get grounded, source-linked answers. • Create data pipelines on Microsoft Fabric (Dataflow Gen2, Lakehouse, Delta tables, PySpark Notebooks) to clean, join and prepare billing, shipment and operational data. • Develop serverless indexers with Azure Functions + Blob Storage to ingest PDFs, templates and project files, enriching them with metadata for precise retrieval. • Implement robust .NET backends (C#, ASP.NET Core, Blazor) for APIs, authentication and post-processing of AI output (JSON→tables, validation, saving to SQL). • Build Blazor-based UIs so non-technical users can safely work with AI features in a familiar web interface. I’ve delivered production work for international clients (logistics, consulting, public sector) including: • A logistics copilot that connects Lakehouse tables and document indexes so teams can analyse shipping costs and rules without living in spreadsheets. • An assistant that auto-generates structured deliverables (plans, stakeholder matrices, trackers) from a short prompt, fully aligned to the client’s own templates. • A smart assessment/forms solution that turns PDFs into digital workflows, guides users step-by-step, and validates answers with RAG. I also run my own AI startup, supported by Microsoft for Startups with Azure credits, which I use to prototype and harden Azure-native AI architectures before applying them to client projects. If you need a practical Azure AI solution (RAG copilot, data platform or intelligent workflow) and want someone who can handle architecture, data engineering and code in one place, I’d be happy to discuss your project.

10+ years of experience on Unix-based operating systems (MacOS, Linux) Deep knowledge of CPU architectures, memory management 10+ years of C++/Qt desktop GUI development experiences 5+ years of kernel driver, low-level communication protocol development 5+ years of RTOSes, baremetal systems, task scheduling and threading 10+ years of network communication and socket programming Extensive knowledge of web technologies and desktop software development Strong documentation, testing and coding skills Keywords: c++, embedded, opengl, git, cmake, gcc, clang, travis CI, unit test, java, Linux, android, ios, php, sql, c++11, c++14, c++17, agile, engineering, mathematics, physics

We develop PC games, VR games, console games and mobile games too! We also develop blockchain metaverse games. I personally have 10+ years developing experience, 7+ years experience specific in game development and over 2 years in blockchain development and related game dev. My team has game developers, unity and unreal, full stack developers and designers. We also have experience with a lot of other fields like nodejs, ASP.net, backend, frontend, iOS/Android app development, firebase, etc.. I have also worked in Japanese game dev studios for over 2 years.