Mostafa Hossameldin

I’m a Full-Stack Developer working mainly with NodeJS, NestJS, React, JavaScript, and TypeScript. My focus is on building structured and reliable systems where backend logic and data integrity actually matter.

On the backend, I design REST APIs using NestJS and NodeJS, working with PostgreSQL and Prisma to handle transactional workflows. In my main project, I built an ERP-style inventory and order system with stock reservation logic, Prisma transactions, row-level locking, and append-only audit trails to ensure consistent and traceable data. I also implemented RBAC and JWT-based authentication with token rotation and revocation, and wrote unit tests using Jest for critical business logic.

On the frontend, I’ve built interfaces using React, including protected routes, role-based UI rendering, and state-driven transactional flows.

I enjoy building real production-style systems using JavaScript and TypeScript across both backend and frontend, with a strong interest in clean architecture, modular design, and long-term maintainability.