Ahtsham S.

I am a senior full-stack engineer with 7+ years building production software across healthcare, fintech, and SaaS. I currently lead engineering for a HIPAA-compliant patient platform at a US healthcare company, managing a remote team of 4+ engineers. The sharper edge of what I do is AI automation. I build production n8n workflows that connect CRMs, webhooks, and AI models (mainly Claude, with structured JSON output) to handle real business processes, not demos. Recent work: a five-workflow lead-automation system for a US retailer, multi-channel intake (email, call, voicemail, SMS) normalized into one classifier, a timezone-aware follow-up engine across SMS and email, and listeners tied into Shopify orders and supplier fulfillment. About 160 nodes across five workflows, running in production on an hourly retainer. On the full-stack side, I build and ship Next.js/React web apps, React Native/Expo mobile apps, and Node.js/Express backends on MongoDB, PostgreSQL, or Supabase, with real-time features (WebSockets), auth, and third-party API integrations. What I can help with: - n8n workflow builds and audits: webhook auth, error handling, retries, CRM writes that do not silently fail - AI integration: Claude/OpenAI function calling, structured outputs, and RAG when a project genuinely needs retrieval - Full-stack web and mobile: Next.js, React Native/Expo, Node.js/Express, PostgreSQL/MongoDB/Supabase - Cleanup and hardening of AI-built apps (Cursor, Lovable, v0, etc.): auth and session bugs, security review, code a next developer can maintain 100% Job Success Score, Top Rated. I will tell you upfront if something in your stack is not a fit for me rather than take the job and figure it out on your dime.