I'm a full-stack developer based in Lahore, Pakistan, currently at InventorX Technologies, where I build backend systems for real-world financial products. I care about the unglamorous stuff that makes production systems trustworthy — concurrency correctness, idempotency, transaction safety, and clean integrations with external providers.

• A payments platform backend, built with NestJS, TypeScript & PostgreSQL — wallet operations with Redis-based distributed locking, double-entry ledgers, idempotency keys, and RabbitMQ-driven workflows, integrating with third-party payment and identity verification providers.
• FoodBuds — a full-stack food-ordering platform with a Next.js frontend and an Express/MongoDB backend. Includes TanStack Query-powered auth flows, debounced product search, MongoDB aggregation pipelines for grouped product listings, direct Products & Categories image uploads, and a landing page built with Framer Motion animations and shadcn/ui.

• Concurrency-safe wallet operations (distributed locks, idempotency, race-condition-proof spend tracking)
• Payment gateway integrations with signature verification, webhook security, and failure-code classification
• Multi-step identity verification flows
• AML screening pipelines and validation-hardened APIs
• RxJS & NestJS patterns — Observables vs. Promises, @nestjs/axios

• Email: umairnaeem373@gmail.com
• LinkedIn: umairnaeem373
• Portfolio: umairnaeem373.github.io