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"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.

I design and deliver production-grade real-time communication systems including video conferencing, live streaming, VoIP, and messaging platforms that must perform reliably at scale. With over 15 years of experience in WebRTC and telecom technologies, I have built solutions ranging from one-to-one calling apps to large multiuser collaboration and broadcasting systems across mobile, web, and backend infrastructure. What I can help you build or fix: ✔ Low-latency audio and video platforms using WebRTC, LiveKit, Janus, or custom stacks ✔ Video conferencing and virtual collaboration applications ✔ VoIP and SIP integrations ✔ Live streaming and broadcasting systems ✔ Real-time messaging platforms and backends ✔ Cross-platform mobile apps for iOS and Android ✔ Debugging complex media issues such as quality problems, device failures, sync issues, and scaling challenges Technical expertise: • Protocols: WebRTC, SIP, RTP, SRTP, RTSP, RTMP, XMPP, HLS • Networking: UDP, TCP, IP, NAT traversal, media routing • Platforms: iOS, Android, Web, Node.js, Go, Python backends • Infrastructure: scalable real-time architectures • Performance optimization and reliability engineering • Twilio, Telnyx, DeepGram, ElevenLabs I have helped startups launch communication products from scratch and assisted established teams in stabilizing systems already running in production. If your project involves real-time audio, video, or messaging, there is a high chance I have solved a similar challenge before. Let’s build a system that works flawlessly in production, not just in demos.

Senior Full-Stack Developer with 15+ years of experience building software products and web applications across enterprise IT, gaming, and fintech-adjacent domains. I'm comfortable owning a project end-to-end — from database design and backend services to public-facing websites and internal tooling. What I do best: - Backend: Python (Django, FastAPI), TypeScript (Node.js, Bun), Go - Frontend: React + Tailwind CSS, Vue, Angular - Databases: PostgreSQL, Redis, MySQL, MS SQL Server, Oracle - Infra & tooling: Linux, Docker, GitHub Actions, Celery - Other: Solana Web3 integrations, REST/gRPC/WebRTC, ETL pipelines, AI-assisted development and custom AI agents Recent experience (4 years): Full-stack developer at a gaming studio. Built and maintained the platform's PostgreSQL data layer, backend services for accounts and in-game economies, match result processing, leaderboards, Solana wallet integration, internal admin tooling, and public game websites. Earlier Upwork work: 35+ completed projects with a 5.0 rating and repeat clients — Go backends (WebRTC signaling, gRPC, OAuth), Vue/JS frontend work, Python automation and scraping, plus one-off tasks across PHP, C#, and SQL. Before that (10 years): Head of IT and lead developer at a medical insurance company, where I built the entire IT system from scratch — databases, ETL, internal apps, and APIs — serving 500K+ policyholders. I work remotely, communicate in fluent English, and am happy to take on both short focused tasks and longer-term engagements. If you need someone who can pick up an unfamiliar codebase, ship clean solutions, and think about the whole product — let's talk.

I’m a Full Stack Software Engineer with over 8 years of experience designing and developing large-scale, high-performance web and mobile applications. My work spans from backend architecture to intuitive front-end experiences, and recently — AI-powered integrations that enhance product intelligence and automation. 🧠 Core Expertise • Languages & Frameworks: JavaScript (ES6+), TypeScript, PHP, Node.js, Express.js, Nest.js, React, Next.js, Vue.js, React Native, Laravel • Databases: MySQL, PostgreSQL, MongoDB (Mongoose), Firebase, Supabase, Redis • API Design: REST, GraphQL (Apollo), WebSockets, gRPC • AI & Automation: OpenAI API Integration, LLM-powered chatbots, GPT Function Calling, AI-assisted data enrichment, Automation Pipelines, Prompt Engineering. • DevOps & Tooling: Docker, Docker Compose, CI/CD pipelines, Linux administration, GitHub Actions, AWS (S3, Lambda, API Gateway) • UI & Design Systems: TailwindCSS, Storybook, component-driven architecture, PWA, SSG (Nextra, Docusaurus, VuePress) • Realtime & Collaboration: Socketio, Pusher, WebRTC, ElasticSearch • Build & Tooling: Vite, Webpack, Babel, ESLint, Turborepo • Project Management: Agile (Scrum, Jira, Trello, Asana) 🤖 Recent Focus • Integrating AI assistants and automation pipelines into modern web applications • Building LLM-driven chat systems and AI-enhanced dashboards for data analytics • Implementing multi-service architectures with LangGraph, FastAPI, and Next.js APIs • Exploring AI-driven personalization and recommendation systems 🚀 Mindset Beyond frameworks and tools, I’m passionate about creating scalable, intelligent systems that deliver real value. I learn and adapt quickly, embracing new technologies — from distributed systems to emerging AI frameworks — to stay at the forefront of modern development. Ultimately, I view AI not just as a tool, but as a force multiplier that allows me to architect smarter, faster, and more autonomous software solutions.

Over a decade of professional software development experience, with extensive focus on Unity and C#, creating projects ranging from hyper-casual mobile games and midcore games to large-scale museum installations and mixed-reality applications. I combine rapid prototyping with robust engineering practices to deliver polished, maintainable products under tight deadlines. On the backend I design and run resilient Node.js, PHP and Python services backed by relational databases, deployed in scalable cloud environments. Technical Highlights Unity & Gameplay Unity LTS releases; Addressables; Timeline; Cinemachine; Shader Graph; URP & HDRP; custom tooling; automated build pipelines. XR & Spatial Computing OpenXR; XR Interaction Toolkit; AR Foundation; Microsoft HoloLens 2; Meta Quest 2/3; Apple Vision Pro. Networking & Live Ops Netcode for GameObjects; Photon Fusion/PUN; Mirror; PlayFab; WebSocket; WebRTC. Web & Mobile Stack React; Next.js; React Native (Expo); Three.js/WebGL; Tailwind CSS. Node.js (Express, NestJS, Fastify) with TypeScript; GraphQL & REST; WebSockets. PHP 8 (Laravel, Slim); Python (FastAPI). Databases & Caching PostgreSQL; MySQL/MariaDB; Redis; Firebase (Firestore & Realtime DB); ElasticSearch. Quality & Observability NUnit; xUnit; Jest; Cypress; Playwright; SonarQube; Grafana; Prometheus; Loki; Sentry. Selected Achievements • Delivered a mixed-reality art installation for a national museum in under ten weeks, supporting thousands of visitors per day without downtime. • Built an internal Unity toolchain that significantly reduced iteration time for level design. • Migrated a legacy PHP monolith to micro-services on Kubernetes, cutting deployment time drastically. • Designed a WebRTC-based multiplayer backend that scaled to massive concurrent users on AWS spot instances. How I Work I write clear, maintainable code, enforce automated tests and static analysis, and keep pipelines stable. I favour small, frequent releases and close collaboration with designers and artists. When deadlines are tight, I prototype first, measure performance early, and refactor once the experience is proven. Ready to join a project at any stage—from concept to live ops—and deliver reliable results.

I'm a highly experienced React & Next.js developer with over a decade of experience in building scalable, high-performance web applications. Since 2014, I've been delivering modern, efficient, and maintainable solutions for startups and enterprises. React & Frontend Expertise • React, Next.js (App Router + Pages Router), TypeScript • State: Redux, Apollo/GraphQL, React Query (TanStack), Convex • UI: Material UI, Tailwind CSS, shadcn/ui, Emotion, Styled Components • Data Viz: D3, Recharts, Chart.js, C3 — interactive dashboards and analytics • Real-Time: WebRTC, Dolby io SDK, Twilio Video, PubNub, Socket io • Forms: React Hook Form, Formik, Final Form, Redux Form • DnD: @dnd-kit, React DnD, react-beautiful-dnd • Testing: Cypress, Jest, React Testing Library, Storybook, Puppeteer • Build: Vite, Turborepo, Webpack, pnpm workspaces, monorepo architecture • Mobile: React Native + Expo (iOS & Android — published to the App Store) My Projects • Virtual Events Platform Dolby io video conferencing, Mux live streaming, PubNub chat, fan queue management, photo booth features, full Cypress E2E test suite. Built from the ground up. • Legal Tech SaaS Enterprise matter management with budget tracking, D3/Recharts analytics dashboards, GraphQL subscriptions, role-based permissions, document management. • Enterprise Asset Management Barcode scanning (Scandit), drag-and-drop interfaces, virtualized lists for large datasets, calendar views, PDF generation, React Native mobile app. • Crypto Portfolio Tracker Next.js web app + React Native mobile app + Convex real-time backend. Binance auto-sync, OpenAI-powered AI assistant, interactive Recharts charts, Turborepo monorepo. TypeScript throughout. Published on the App Store. • Real Estate Platform Next.js + Firebase + MUI + React Native/Expo. Property marketplace across web + mobile. Google Maps district navigation, AI-powered property search, financial tools (mortgage calculator, rent-vs-buy analysis, income tax refund calculator), analytics dashboard with Google Analytics Data API, AWS S3 image storage. Turborepo monorepo with 3 apps (main site, mobile, landing page) sharing code via path aliases. I have a Master’s degree in Computer Science and a deep understanding of modern web architecture. Whether you need a high-performance web app, SEO-optimized Next.js solutions, or scalable e-commerce platforms, I can help bring your vision to life. Let's build something great together! 🚀