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15+ years shipping production systems: Unity games, XR installations, and AI features that hold up after release. I help teams ship AI inside real products - agents, orchestration, RAG, and Unity/C# inference - with clean architecture, measurable quality, and release discipline. When the experience needs a web or backend layer, I own that too. What I deliver - LLM apps & agents: tool calling, multi-step workflows, planner/executor loops, human-in-the-loop review - Orchestration: Semantic Kernel, graph-style agent flows, custom runtimes, queue/worker pipelines (Temporal / Hangfire / BullMQ) - RAG: chunking, embeddings, hybrid search, reranking, grounded answers over docs, CMS, or game data - C# / .NET AI: Semantic Kernel, Microsoft.Extensions.AI, OpenAI & Azure OpenAI, ONNX Runtime, ML.NET - Unity AI: Unity Sentis / Inference Engine, on-device & server-side inference, AI NPC/dialogue, editor & content copilots - Realtime AI: streaming chat, STT/TTS voice flows, WebRTC + LLM backends for live experiences - Production layer: auth, rate limits, cost controls, tracing/evals, fallback models, safe prompt & tool boundaries Unity, XR & gameplay Unity LTS · C# · URP/HDRP · Addressables · Timeline · Cinemachine · Shader Graph · custom tooling · CI build pipelines OpenXR · XR Interaction Toolkit · AR Foundation · Meta Quest · HoloLens 2 · Apple Vision Pro Netcode for GameObjects · Photon Fusion/PUN · Mirror · PlayFab · WebSockets · WebRTC Around the experience (when needed) React / Next.js · Node.js/TypeScript · PostgreSQL · Redis · Docker · AWS · CI/CD · Sentry / Grafana Selected results - Mixed-reality museum installation in under 10 weeks - thousands of daily visitors, no downtime - Internal Unity toolchain that cut level-design iteration time significantly - Legacy PHP monolith to Kubernetes services with much faster, safer deployments - WebRTC multiplayer backend scaled to high concurrency on AWS spot capacity How I work I use modern AI tooling to move faster, but I still own architecture, performance, tests, and release quality. Small iterations, early measurement, maintainable code your team can keep after handoff. Best fit AI features inside Unity/XR or realtime products, agent/RAG backends for live experiences, or end-to-end ownership from prototype to production under a hard deadline. Share the goal, constraints, and timeline - I'll tell you quickly what's realistic and how I'd approach it.

"Hands-down, one of the best devs I've worked with on Upwork." - ScreenStory Senior C++ Engineer with 18+ years building real-time and embedded systems, multimedia pipelines, and high-performance desktop applications. Top Rated Plus on Upwork - 9,900+ hours and $400K+ earned across 28+ long-term engagements. MORE FROM CLIENTS "Excellent in every regard: communication, work, making logical inferences, asking good questions. Truly the top of the top." - Skan AI "A very reliable, knowledgeable and professional developer who is a pleasure to work with." - Clickdrive WHAT I BUILD - Rich UI/UX and high performance desktop applications on C++/Qt, C# .Net Framework WPF/UWP/WinUI XAML - Multimedia & Real-Time Screen recording engines (Desktop Duplication API, Windows Graphics Capture, GDI), low-latency video/audio pipelines on FFmpeg, WebRTC streaming with custom builds and Janus SFU, DirectX GPU compositing with custom pixel shaders, audio DSP with RNNoise. - Embedded & HMI Industrial automation, locomotive on-board systems, HMI on Qt/QML, ModBus / RS-232/485 / Can. Codex industrial labeling software for ALE sas - Real-Time Backends SCADA alarm-module backend with high-throughput low-latency event handling, gRPC, multithreaded C++17/20 architecture. - Native Library Bindings C++ cores with bindings to Electron (Node-API), Flutter (FFI), Python. Cross-platform Windows and macOS. - Engineering Infrastructure CI/CD on Jenkins and Azure DevOps, self-hosted Sentry deployment, CrashRpt, automated quality gates, structured Git workflows. HIGHLIGHTS - 7 years as lead engineer on a portfolio of consumer multimedia and document-processing applications (architecture + implementation across a team of 3) - Locomotive driver HMI deployed on operational locomotives in real-world service - Automated engine test bench: reduced testing time by 40%, increased throughput from 6 to 10 engines per shift - Currently leading C++/MFC -> Qt migration on the Ham Radio Deluxe product suite (41,500+ active users) Core stack: C++ (17/20) · Qt (QML, QWidgets) · CMake · vcpkg · FFmpeg · WebRTC · Desktop Duplication API · Media Foundation · DirectX · MFC · gRPC · Multithreading · ModBus · Windows Embedded · C# .NET · Electron Node-API · Jenkins · Azure DevOps · Sentry WHAT I'M LOOKING FOR Long-term engagements (6+ months) where deep C++ expertise and architectural ownership matter. Equally comfortable in greenfield architecture and rescuing legacy codebases. Available for fixed-price projects and hourly contracts.

🚀 Top Rated Plus | $1M+ Earned | 23,000+ Hours | 157 Jobs | 100% Job Success I'm a Senior Software Engineer specializing in computer vision, deep learning, and AR/VR, with 10+ years of experience shipping high-performance, technically complex applications — from real-time vision pipelines and medical imaging to 3D simulation and cross-platform products. Startups, research institutions, and enterprise teams hire me when the work is too complex for a generalist: performance-critical C++, production ML, and immersive 3D. 🧠 Core Expertise 💻 C / C++ / Python / Qt / Unity • Highly optimized C++ (TBB, MKL, BLAS, LAPACK, IPP) • Multithreaded, performance-critical applications • Complex algorithms and data structures • Desktop apps with Qt (Windows, macOS, Linux) 🧩 Computer Vision & Deep Learning • OpenCV, OpenGL, ITK, VTK, MKL • DICOM & medical image processing (ITK) • YOLO, Detectron, TensorFlow, PyTorch, Caffe • Automated data annotation pipelines 🕶️ AR / VR / XR • Unity3D for mobile, desktop, and enterprise • HoloLens 2, Oculus/Quest, and Mixed Reality apps • Advanced vision models integrated into immersive environments 📱 Cross-Platform & Streaming • Android & iOS with native C++ plugin integration • Video/audio streaming with FFmpeg, GStreamer, LibVLC • Real-time communication & networked systems ⚙️ Also: SQA & UI automation (Selenium), scientific software, and custom tools for visualization, annotation, and analytics 🔍 Why Clients Choose Me • Top Rated Plus with 100% Job Success across 157 projects • $1M+ earned and 23,000+ hours on Upwork — long-term relationships, not one-off gigs • Strong communication, realistic estimates, and reliable delivery 📩 Whether you need a vision-powered AR app, a high-performance C++ engine, or a production deep learning system, I can take your idea from prototype to production. Let's talk.