Haroon Z.

Need a reliable developer to build, fix, or extend your software? I develop full-stack web applications, Claude, Codex, Python/FastAPI backends, REST APIs,bots, third-party integrations, workflow automations, and production AI features. I can own an MVP end to end or handle a focused task such as a backend bug, API integration, web feature, WordPress/WooCommerce fix, RAG search, chatbot, or deployment. What I can build or fix: • Python/FastAPI backends and REST APIs • Full-stack web features, dashboards, and internal tools • Third-party API, webhook, and workflow integrations • AI integrations using OpenAI, Gemini, RAG, agents, and structured outputs • WordPress, WooCommerce, PHP, and JavaScript customizations • Docker, PostgreSQL, cloud deployment, testing, and debugging Selected work: • Built an AI pipeline that converted unstructured clinical-trial PDFs into structured HL7 FHIR resources • Developed a clinical NLP decision-support workflow with structured outputs and safety constraints • Built a FastAPI quantitative research and backtesting platform • Deployed an OpenAI-compatible vLLM inference API on cloud GPU infrastructure I focus on reliable delivery: clear scope, regular updates, maintainable code, testing, documentation, and a clean handoff. Top Rated • 100% Job Success • 0–4 hour average response time Send me your requirements or current technical problem. I’ll respond with the likely approach, the first implementation steps, and a realistic estimate.