HandOff is a venue ordering

HandOff is a venue ordering and delivery platform built around customer and runner mobile applications, admin and vendor web portals, and a shared backend API.

As a Backend Developer / Full-Stack Engineer, I worked on the NestJS and PostgreSQL backend supporting authentication, order management, payments, reporting, notifications, and application integrations.

My contributions included: • Developing backend APIs using NestJS and PostgreSQL • Building admin and vendor web portals with React.js • Implementing configurable themes and application modules • Integrating Firebase Cloud Messaging for push notifications • Integrating AWS S3 and Cloudinary for file uploads • Supporting email and SMS notification integrations

Tech Stack: NestJS, PostgreSQL, React.js, Firebase Cloud Messaging (FCM), AWS S3, Cloudinary.

The project demonstrates my experience working across backend architecture, web portals, mobile app integrations, and connected application services.