Behnam M.

✅ 18+ years of software engineering and architecture experience ✅ $40K+ earned on Upwork | 100% Job Success | Top Rated ✅ Enterprise software, fintech, AI engineering, and complex integrations YOUR SYSTEMS SHOULD WORK TOGETHER RELIABLY. Is your application struggling to scale? Are legacy systems slowing down your team? Do payment events fail, APIs become unreliable, or AI projects stall after the prototype? I help businesses build new products, fix critical problems, and modernize existing systems without unnecessary rewrites. I can step into an unfamiliar codebase, identify the real bottleneck, and deliver a practical solution. ⭐ HOW I CAN HELP ✅ FULL STACK DEVELOPMENT & ARCHITECTURE Build SaaS platforms, custom web applications, APIs, dashboards, and enterprise backends. Extend unfinished projects, refactor fragile code, and design maintainable systems. ✅ AI ENGINEERING & AUTOMATION Build AI support chatbots, appointment booking workflows, and operator dashboards using React, Supabase, and OpenAI. Integrate AI features into existing React or Lovable applications after a technical review. Integrate LLMs into existing products; build AI agents, RAG pipelines, MCP integrations, intelligent workflows, and AI-powered APIs. Address access control, validation, observability, and cost alongside functionality. ✅ API INTEGRATION & LEGACY MODERNIZATION Connect third-party services, modern APIs, databases, and older enterprise software. Modernize .NET and COM components, troubleshoot broken integrations, and improve data consistency. Build reliable webhook integrations with signature verification, idempotency, and duplicate protection, as well as Telegram bot backends with shared infrastructure and admin dashboards. ✅ PAYMENTS, FINTECH & DISTRIBUTED SYSTEMS Work on transaction processing, settlement, payment integrations, webhook reliability, and concurrency challenges. My experience includes banking infrastructure associated with approximately 9,000 ATMs. ✅ CLOUD, DEVOPS & WEB3 Build and deploy cloud-connected applications, configure Docker and CI/CD, and develop blockchain integrations and Solidity smart contracts when the project requires them. 🚀 SEE THE ENGINEERING, NOT JUST THE CLAIMS I regularly publish working open-source projects in AI, security, fintech, and backend reliability. They include source code, automated tests, technical documentation, and reproducible demonstrations. Recent public projects include: • SupabaseClientFlow: AI chat, saved conversations, customer data isolation, fixed-slot booking, and support requests. • MCP Sentinel: AI tool authorization, policy enforcement, and sanitized audit logging. • Webhook Guardian: HMAC verification, idempotency, and duplicate event protection. • BotForge: Telegram multi-bot backend with FastAPI, PostgreSQL, and a React admin dashboard. Related implementation packages are available in my Project Catalog. Explore my public repositories: github/DarkExpert These projects show how I think, test, and solve problems. If one addresses a challenge similar to yours, I can discuss a tailored implementation for your environment through Upwork. 🛠 TECHNOLOGIES Backend: C#, .NET, ASP.NET Core, EF Core, Node.js, TypeScript, Fastify, Python, FastAPI, aiogram Frontend: React, Angular, JavaScript, HTML, CSS AI: LLMs, RAG, AI Agents, MCP, Azure AI Foundry, Azure AI Search Data & integration: SQL Server, PostgreSQL, Oracle, MySQL, Redis, REST APIs, messaging, Supabase Cloud & security: Azure, AWS, Docker, CI/CD, OAuth2, OpenID Connect, JWT, Supabase Auth, Row Level Security, Edge Functions Enterprise & Web3: WPF, MVVM, Umbraco, COM integration, Solidity, blockchain ⭐ WHY WORK WITH ME? • 18+ years across architecture, hands-on development, troubleshooting, and integration • Proven Upwork track record: $40K+ earned, 100% Job Success, Top Rated • Experience with complex banking and enterprise systems • Comfortable improving existing software rather than insisting on a rebuild • Clear technical decisions, maintainable code, and realistic delivery scopes 💬 LET'S DISCUSS YOUR PROJECT Tell me what you're building, what isn't working, and what outcome you need. Whether you need a new product, an integration, a technical rescue, or an AI feature, I'll help identify a practical next step.