amarpreet

Building and launching product-driven applications across web and mobile platforms Designed and developed full-stack applications using TypeScript, React, and Node.js Built scalable backend APIs and real-time systems for interactive applications Developed and shipped products including EvenX (expense splitting) and PlaySequence (real-time multiplayer game) Collaborated in a small team to rapidly prototype, iterate, and launch new products

Built a real-time financial platform processing $12M+ in transactions and 10K+ daily API requests across 10+ B2B clients, delivering a modern alternative to QuickBooks Designed and developed scalable backend microservices and REST APIs using Node.js and NestJS Built event-driven microservices architecture using NATS and WebSockets for real-time communication and asynchronous processing. Implemented background job processing using Bull (Redis) for handling asynchronous tasks and distributed workloads Designed and maintained systems handling sensitive financial data in PCI-compliant environments Architected systems with a focus on scalability, reliability, and performance, evaluating tradeoffs in cost and maintainability Designed and developed a workflow automation platform (Zapier-like) for financial operations and payment workflows Led frontend development using React and TypeScript, building scalable and maintainable UI systems Improved system performance through PostgreSQL query optimization (targeted indexing on transaction and ledger tables) and frontend render optimization, reducing unnecessary re-renders in complex state-driven UIs Built preview environments for each merge request, reducing feedback cycles and improving developer productivity.

Delivered 9+ production projects across Next.js, React, Node.js, Vue, and mobile platforms. Maintained a perfect 5.0/5.0 rating through consistent delivery, communication, and reliability. Designed and developed backend APIs and full-stack features for SaaS and e-commerce systems Worked directly with clients to scope requirements, propose solutions, and deliver end-to-end implementations.