Muhammad Usama
Muhammad Usama

Full-Stack Software Engineer / MERN Stack Developer

Actively looking · Member since 13 Sep 2026
Location
Karachi, Pakistan
Desired salary
Unspecified
Work preference
Hybrid / Full Time
Experience level
Mid

About

Professional summary

I am a Full-Stack Software Engineer specializing in MERN-stack and web application development. I build production-ready SaaS products end-to-end, from responsive user interfaces and backend APIs to database architecture, authentication, and deployment.

I have hands-on experience with React.js, Node.js, Express.js, ASP.NET Core, SQL Server, MongoDB, and RESTful API design. I am comfortable translating Figma designs into responsive, pixel-accurate frontend components and connecting them to secure backend services.

I solo-architected and deployed Tummly, a multi-location restaurant feedback SaaS platform operating across more than 20 UK locations. The platform includes a multi-tenant SQL Server architecture, an approximately 18-endpoint API suite, JWT and OTP authentication, role-based access control, QR-code generation, and guest feedback workflows.

I have also contributed to a live SaaS product at 5Sum Ltd., where I developed full-stack features, implemented REST APIs, supported JWT-based authentication and multi-tier permissions, resolved production issues, and participated in release and deployment cycles with a distributed team.

I am currently expanding my expertise in distributed systems and applied AI through a Netflix-style video streaming platform and a Groq-powered LLM chatbot. My work includes Redis caching, Apache Kafka event processing, FFmpeg/HLS transcoding, Docker Compose deployments, and conversational AI integrations.

I am seeking a Full-Stack or MERN Software Engineer role, with interest in remote opportunities worldwide and on-site roles in Karachi. I enjoy owning features from design handoff through production deployment while collaborating effectively in Agile, cross-border engineering teams.

Skills

30 capabilities

Tech stack & tools

Working toolkit

Application Hosting

Application Utilities

Experience

Career history

Full-Stack Developer 5Sum Ltd.

Engineered full-stack features for a live SaaS platform, translating Figma designs into pixel-perfect and fully responsive React.js components.

Designed and built RESTful APIs connecting the React frontend with an ASP.NET Core backend. Implemented JWT-based authentication and role-based access control for multi-tier user permissions.

Diagnosed and resolved production issues, tested feature releases, and supported deployment cycles while collaborating with a distributed engineering team.

Solo Full-Stack Developer Tummly

Solely architected, built, and deployed a production restaurant feedback and multi-location SaaS platform operating across more than 20 restaurant locations in the UK.

Designed a multi-tenant SQL Server schema and an approximately 18-endpoint REST API suite. Implemented JWT and OTP authentication, role-based access controls, dynamic QR-code generation, guest feedback workflows, and a responsive production-grade UI.

Education

Learning history

Aptech Learning

Advanced Diploma, Software Engineering

Advanced Diploma in Software Engineering.

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