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I’m a solo software developer specializing in cross‑platform desktop applications, automation tools, and game development. I build fast, reliable utilities using C++, Python, and Flutter/Dart for both Windows and Linux, including CLI‑based tools and high‑performance executables. My experience includes developing a full Organizer application featuring a custom search engine, file‑management utilities, and system‑level tools optimized for speed and precision. I enjoy creating practical solutions that help clients automate tasks, improve workflows, and work more efficiently. I also develop 2D game systems in Godot using C#, including UI, tilemaps, NPC logic, and debugging tools. Whether you need a desktop utility, a small game system, or a custom automation script, I deliver clean, functional, and well‑structured results. Reliable, detail‑oriented, and focused on solving real problems.

Senior C# / WPF / .NET developer with 12+ years and 16,000+ Upwork hours. I build desktop and cross-platform applications — from SCADA dashboards and industrial HMI to kiosks, POS terminals, and enterprise data tools. ── What clients hire me for ── ✅ AI integration — I help businesses add AI capabilities to existing desktop applications or build AI-native tools from scratch ✅ New WPF/XAML application from scratch — MVVM, custom controls, complex data grids, charts, gauges, multi-screen wizards, touch UI ✅ Legacy migration — WinForms → WPF, .NET Framework → .NET 8/9/10, modernizing old codebases without rewriting business logic ✅ Industrial & HMI software — machine control panels, SCADA, conveyor supervisory systems, RF/hardware device control ✅ Kiosk & POS systems — touch-optimized retail, hospitality, self-service printing, digital signage ✅ Enterprise & data tools — dashboards, SAP integration, ETL pipelines, financial platforms, medical billing systems ✅ UI/UX redesign — Figma mockups → pixel-perfect XAML, Telerik/DevExpress component customization, performance optimization of existing UI ✅ Code review & architecture consulting — for teams already working in WPF ── AI integration examples ── 💎 Chat assistant built into your app — answers questions about your data, documents, or product using your own knowledge base (not generic internet) 💎 Document intelligence — automatic classification, data extraction, summarization of contracts, reports, forms 💎 Smart search — finds relevant content by meaning, not just keywords 💎 Anomaly detection & predictions — flags outliers in production data, forecasts trends using your historical records 💎 Voice control — speech-to-text for hands-free operation in industrial or field environments 💎 Private / on-premise AI — full LLM capabilities with no data leaving your infrastructure; critical for medical, legal, and financial clients ── Clients ── SafeFleet (US) · Winshuttle/Precisely (US) · Cloudmed (US) · Adaura Technologies (US, NASA/Google/Intel customer) · ASCO Biegetechnik (DE) · Agilom (AT) · Panipro (CH) · H&H Informatique (BE) and others. ── Industries ── Industrial automation & HMI, medical & insurance, fintech & trading, retail & hospitality, manufacturing & engineering, logistics & fleet management, energy & utilities, public-sector kiosks & self-service, education & e-learning, real estate & mortgage, legal & compliance tools. ── What makes me different ── I work with AI-assisted development (Claude Code, GitHub Copilot) at every stage: architecture decisions, XAML generation, code review, refactoring, and testing. This isn't hype — it translates directly into faster delivery, fewer bugs, and cleaner code. Clients get more for the same budget! Open to full-time engagement and long-term projects. Flexible with US/EU time zones.

𝐈 𝐛𝐮𝐢𝐥𝐝 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 𝐋𝐋𝐌 𝐚𝐠𝐞𝐧𝐭𝐬 𝐚𝐧𝐝 𝐭𝐡𝐞 𝐟𝐮𝐥𝐥-𝐬𝐭𝐚𝐜𝐤 𝐚𝐩𝐩𝐬 𝐚𝐫𝐨𝐮𝐧𝐝 𝐭𝐡𝐞𝐦. 𝟏𝟎+ 𝐲𝐞𝐚𝐫𝐬 𝐬𝐡𝐢𝐩𝐩𝐢𝐧𝐠 𝐬𝐨𝐟𝐭𝐰𝐚𝐫𝐞, 𝐭𝐡𝐞 𝐥𝐚𝐬𝐭 𝐬𝐞𝐯𝐞𝐫𝐚𝐥 𝐟𝐨𝐜𝐮𝐬𝐞𝐝 𝐨𝐧 𝐚𝐠𝐞𝐧𝐭𝐢𝐜 𝐀𝐈, 𝐑𝐀𝐆, 𝐚𝐧𝐝 𝐌𝐋 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐭𝐡𝐚𝐭 𝐡𝐨𝐥𝐝 𝐮𝐩 𝐮𝐧𝐝𝐞𝐫 𝐫𝐞𝐚𝐥 𝐭𝐫𝐚𝐟𝐟𝐢𝐜. Most AI projects stall in the gap between a demo that works once and a system that works every time. That gap is where I spend my time: structured output validation, eval harnesses, retry and fallback logic, cost controls, and observability so you know why a run failed instead of guessing. 𝐖𝐡𝐚𝐭 𝐈 𝐝𝐨 Agentic systems and LLM pipelines. Multi-step agents, tool calling, RAG over private data, structured JSON output with Pydantic validation, prompt and model evaluation. I work across OpenAI, Anthropic, Groq, and open-weight models, including local and on-device inference with llama.cpp, GGUF, and ONNX Runtime. Full-stack product engineering. Next.js and React on the front end, FastAPI and Node on the back end, TypeScript end to end. Postgres, Redis, background job queues, streaming responses, and the auth layer most projects underestimate: RBAC, MFA, session handling, audit logging. Applied ML. Fine-tuning versus prompting decisions made on evidence rather than hype, computer vision with PyTorch, model training and deployment, and honest guidance on when a smaller model or a plain heuristic beats an LLM call. Cloud and infrastructure. AWS across ECS, Lambda, S3, RDS, and CloudFront. CI/CD, Docker, IaC, and deployments built to be handed off, not babysat. 𝐒𝐞𝐥𝐞𝐜𝐭𝐞𝐝 𝐰𝐨𝐫𝐤 Designed and shipped a HIPAA-aligned healthcare platform with granular role-based access control, multi-factor auth, and audited data flows on AWS. Built and run Power Interview AI, a privacy-first interview preparation product with an open-source client, from model layer to billing. Delivered a mobile LLM system covering on-device inference, computer vision enrollment, and real-time gesture recognition for a consumer app. Built micro-agent data pipelines with staged processing, schema-validated outputs, full test coverage, and strict typing via mypy and ruff. 𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤 I ask about your constraints before I write code. Budget per request, latency targets, data sensitivity, and who maintains this after I leave all change the right architecture, and I would rather surface a tradeoff early than hand you a surprise at the end. You get clear written updates, working increments you can test as we go, and documentation your team can actually use. If your project is a poor fit for me or for an LLM at all, I will tell you that directly. It saves us both time. 𝐒𝐭𝐚𝐜𝐤: Python, TypeScript, Next.js, React, FastAPI, Node.js, LangChain, LangGraph, PyTorch, Hugging Face, OpenAI, Anthropic, Groq, Pinecone, pgvector, Postgres, Redis, Docker, AWS, GitHub Actions Send me a message with what you are building and what is blocking you. I will reply with an honest read on scope, approach, and whether I am the right person for it.

𝐀𝐫𝐞 𝐲𝐨𝐮 𝐬𝐞𝐚𝐫𝐜𝐡𝐢𝐧𝐠 for an experienced Full Stack AI Developer to build, fix, or scale your SaaS application, AI product, web platform, or backend system? I specialize in Next.js Development, React Development, Node.js Development, NestJS Development, FastAPI Development, Express.js Development, TypeScript Development, Python Development, PostgreSQL Development, AI Agent Development, OpenAI API Integration, LangChain Development, LangGraph, MCP, RAG, Supabase Development, Docker, AWS and Vercel Deployment. With 12+ years of experience in Full Stack Development and AI-powered SaaS products, I help startups, founders, and growing businesses build secure, scalable, and production-ready applications. Whether you're launching a new SaaS platform, adding AI features to an existing product, or taking over a codebase from another developer, I focus on clean architecture, reliable APIs, scalable backend systems, and long-term maintainability. ➤ 𝐌𝐲 𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐢𝐧𝐜𝐥𝐮𝐝𝐞 Full Stack AI Development, Next.js Development, React Development, Node.js Development, NestJS Development, FastAPI Development, Express.js Development, TypeScript Development, Python Development, AI Agent Development, OpenAI API Integration, Claude API Integration, Gemini API Integration, LangChain Development, LangGraph Development, MCP Integration, RAG Development, SaaS Development, Backend API Development, REST API Development, GraphQL Development, PostgreSQL Development, Supabase Development, Prisma Development, Stripe Integration, Authentication, Authorization, Docker Deployment, AWS Deployment, Vercel Deployment, API Integration, Performance Optimization, Bug Fixing, Feature Development, AI Workflow Automation, Dashboard Development, CRM Development, Marketplace Development, Booking Platform Development, Internal Tools Development, Admin Panel Development, and Responsive Web Application Development. ➤ 𝐀𝐈 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 AI Agent Development, OpenAI API Integration, ChatGPT API Integration, Claude API Integration, Gemini API Integration, LangChain Development, LangGraph Development, Model Context Protocol (MCP), Retrieval-Augmented Generation (RAG), Vector Database Integration, Embeddings, Tool Calling, Function Calling, Multi-Agent Workflows, AI Chatbot Development, AI Assistant Development, AI Workflow Automation, Knowledge Base AI, Document AI, Semantic Search, OpenRouter Integration, Prompt Engineering, Human-in-the-Loop AI Applications, AI SaaS Development, AI Copilot Development, and Business AI Automation. ➤ 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 Next.js Development, React.js Development, TypeScript Development, JavaScript Development, Node.js Development, NestJS Development, Express.js Development, FastAPI Development, Python Backend Development, REST API Development, GraphQL API Development, Authentication & Authorization, JWT Authentication, OAuth Integration, Role-Based Access Control, Webhook Development, Background Jobs, Real-Time Applications, SaaS Platform Development, Internal Business Tools, CRM Development, ERP Dashboard Development, Admin Dashboard Development, Marketplace Development, Booking System Development, Feature Development, Code Refactoring, Existing Codebase Maintenance, Production Support, and Performance Improvements. ➤ Backend & Database Services PostgreSQL Development, Supabase Development, Prisma ORM, MySQL Development, MongoDB Development, Redis Integration, SQL Development, Database Design, Database Migration, Database Optimization, Row-Level Security (RLS), Data Integrity, Backend Refactoring, Legacy System Modernization, API Security, Microservices Development, Backend Performance Optimization, Query Optimization, Database Scaling, Secure Authentication, and API Architecture. ➤ 𝐒𝐚𝐚𝐒 & 𝐂𝐥𝐨𝐮𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 AI SaaS Development, Startup MVP Development, SaaS Dashboard Development, Subscription Platform Development, Customer Portal Development, Analytics Dashboard Development, Existing SaaS Maintenance, Technical Audit, Application Scaling, Launch Support, Stripe Billing Integration, Stripe Webhooks, Payment Gateway Integration, Docker Development, AWS Deployment, Vercel Deployment, CI/CD Setup, GitHub Actions, Cloud Infrastructure, Monitoring, Production Deployment, Environment Configuration, DevOps Support, Deployment Automation, and Containerized Applications. I believe great software is built by understanding the product before writing code. I work directly with clients, communicate clearly, and deliver clean, reviewable updates that improve existing applications without unnecessary rewrites. My goal is to build AI-powered SaaS products and web applications that are fast, secure, scalable, and production-ready. 📩 𝐇𝐚𝐯𝐞 𝐚 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐢𝐧 𝐦𝐢𝐧𝐝? Let's build an AI-powered SaaS application, web platform, API, or backend system that is ready for real users and long-term growth.