Ahmed P.

Senior full-stack engineer with 3+ years building production SaaS, fintech, and AI-driven applications. I currently architect a NestJS + PostgreSQL fintech platform handling invoices, multi-currency payments (USD/EUR/crypto), and integrations with Bridge and Due Network for ACH, SEPA, and SWIFT rails. What I deliver: - Full-stack web apps — Next.js 14, React, TypeScript, Tailwind, Shadcn UI - Production APIs — NestJS, Node.js, Express, Prisma, PostgreSQL, MongoDB - AI integrations — OpenAI, LangChain, custom chatbots (built a WhatsApp ticketing bot on Twilio + Serverless/AWS handling real customer bookings) - Fintech features — KYC/TOS flows, webhook signature verification, virtual accounts, payment provider integrations - Real-time systems — Socket IO, WebSockets, live dashboards, scheduling Recent work: → Sorbet (fintech): Designed the Prisma schema and NestJS API for a multi-currency payments platform. Built secure KYC flows and webhook processors for financial events. → KUPI (transport SaaS): Built the bus-ticketing dashboard and the WhatsApp AI chatbot that automates inquiries, bookings, and support end-to-end, from OpenAI prompt design to AWS deployment. → Strategeaze (field service SaaS): Shipped the scheduling engine with Google Maps routing, role-based access, invoicing, and S3 document storage. I write clean, typed, testable code, document what I ship, and communicate proactively. I'm comfortable owning a feature end-to-end or plugging into an existing team. Available 30+ hrs/week. Overlap with US and EU time zones. If you're building a SaaS, fintech product, or AI-powered tool and need someone who can move fast without breaking the database, let's talk.