Muhammad Safiullah Khan (Safi)

Full Stack AI Developer based in Islamabad, Pakistan. I build AI-powered SaaS products in Next.js, React, and Node.js with OpenAI, Claude, and LangChain integrations.

What I build

• AI SaaS MVPs from architecture to production
• Production AI features and agents with LangChain, LangGraph, MCP
• AI feature integration into existing Next.js apps
• EU-compliant SaaS infrastructure (Peppol-integrated)
• Full stack rescue and refactor work

Recent work

• Lainey AI — Founding full stack developer on AI-powered Women SaaS platform.
• MyFileTracker — Peppol-integrated B2B invoicing SaaS for EU compliance.
• Wish2Share — Multi-network affiliate wishlist platform integrating 6 affiliate APIs.

Tech stack

𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱: Next.js, React, TypeScript, Tailwind CSS 𝗕𝗮𝗰𝗸𝗲𝗻𝗱: Node.js, NestJS, Express, FastAPI 𝗗𝗮𝘁𝗮 𝗮𝗻𝗱 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲: PostgreSQL, Supabase, Firebase, Redis, pgvector, Pinecone, Docker, AWS, Vercel 𝗔𝗜: OpenAI API, Claude API, LangChain, LangGraph, RAG systems, AI agents, MCP servers 𝗣𝗮𝘆𝗺𝗲𝗻𝘁𝘀 𝗮𝗻𝗱 𝗔𝘂𝘁𝗵: Stripe with subscriptions and usage-based billing, OAuth, JWT, RBAC, Clerk, NextAuth

Stats

• Top Rated on Upwork
• 100% Job Success Score
• 11 completed contracts, all 5 stars

Connect

• Website: https://msafiullah.com
• Upwork: https://www.upwork.com/freelancers/muhammadsafiullahk
• LinkedIn: https://www.linkedin.com/in/msafiullahk/
• X: https://x.com/msafiullahdev
• Email: programmingincode@gmail.com