Abdullah Nauman

Developed and maintained full-stack mobile and web applications from requirements to production deployment. Built front-end features, back-end APIs, database workflows, and third-party integrations for marketplace and enterprise software. Designed secure REST APIs, authentication pipelines, real-time data streaming, and transactional workflows. Leveraged JavaScript/TypeScript, Node.js, React, Firebase, MongoDB, and SQL databases, and supported secure auth and integration patterns. Deployed and managed back-end services on Linux VPS using Docker, Nginx, and CI/CD Git workflows. Troubleshot production incidents, addressed performance bottlenecks, and ensured high uptime for core business platforms.

Delivered end-to-end mobile, web, and back-end applications for international clients across diverse domains. Architected solutions using Flutter, Node.js, .NET, Firebase, MongoDB, and SQL databases. Integrated secure payment gateways, real-time WebSockets, OAuth authentication, and third-party REST APIs. Designed scalable database schemas and optimized backend query routines. Managed the client lifecycle from scope estimation and prototyping through testing, deployment, and ongoing maintenance, while keeping direct communication to refine goals, technical scope, delivery timelines, and feature iteration. Administered Linux VPS environments including Nginx reverse proxy setup, SSL certificates, SSH access, and domain mapping.