Ghazanfar A.

I'm a full stack SaaS developer building production web apps on Next.js, NestJS, Node.js and Python - with Stripe payments and the AI features modern products increasingly need. 100% Job Success · $5K+ earned · 300+ hours on Upwork For six years, I've built and scaled a production geospatial SaaS platform whose enterprise users include Redfin, CBRE, and Moody's: React and Next.js frontend, Node.js and NestJS backend, GraphQL, Stripe billing, AWS. Alongside that I work with founders and CTOs in the US and Europe on multi-tenant SaaS platforms, subscription and webhook infrastructure, and LLM features that hold up in production rather than in a demo. 𝗥𝗲𝗰𝗲𝗻𝘁 𝘄𝗼𝗿𝗸 • Multi-tenant subscription SaaS MVP, delivered and renewed into a second phase • Payment webhook stabilization for a payments-critical platform • AI legal contract analysis platform built on RAG and LLM document extraction • AI call analysis combining Automatic Speech Recognition, NLP, and GPT-based analysis • Database pool exhaustion and expired-order cleanup on a live Stripe checkout • Stripe VAT-at-checkout integration 𝗪𝗵𝗮𝘁 𝗜 𝗯𝘂𝗶𝗹𝗱 • Full stack SaaS platforms, CRMs, Dashboards, and web apps - Next.js, React, TypeScript, Node.js, NestJS, Express.js, Python(FastAPI) • Stripe integration - subscriptions, checkout, billing portals, webhooks, multi-currency • PostgreSQL and Supabase backends - auth, row-level security, multi-tenant data isolation • MongoDB schema design and data modeling • REST and GraphQL API development, plus third-party integrations (Twilio, Strapi) • AWS deployment - EC2, ECS, S3, Lambda • AI integration - OpenAI and Anthropic APIs, RAG pipelines, semantic search, structured outputs, AI chatbots, AI agents 𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸 Architecture review before any code is written. I use Claude Code and Cursor daily. They make me faster; they don't make the decisions. Code is reviewed before it reaches your repo, and I'll tell you where the model got it wrong. Sprint delivery with a full review and a written plan roughly every 10 working days, plus async Loom updates between. I flag technical tradeoffs when I make them rather than after they bite you. Post-launch support included. Based in Pakistan - reliable overlap with US mornings and EU afternoons. Response under 4 hours. If you're building something serious, send a MESSAGE or INVITE me to your job. I offer a free 30-minute technical strategy call before any engagement.