Abdur RahmanSami, to most people.

01 · api-gateway · routed

Three years behind the gateway.

I've been a backend engineer for 3+ years, working on microservices and production applications. Most days I live in Node.js, Express.js, SQL and Redis: designing APIs, caching them, securing them, and debugging them once they meet real traffic.

02 · auth · jwt verified

Software Engineer at Poridhi.

Mar 2023 – Present · Bangladesh

I joined Poridhi on the frontend. I built the product from the ground up with React.js and Next.js, then moved deeper into the backend.

• Authentication and JWT sessions
• WebSockets for real-time features
• Caching and rate limiting for production applications

03 · redis · cache hit · skills:*

What's already warm in cache.

Backend

Node.js, Express.js, REST APIs, Microservices, JWT

Infrastructure

Redis, Docker, Kubernetes (k3s/kind), GitHub Actions, ArgoCD

Frontend

React.js, Next.js, TailwindCSS, shadcn/ui, TanStack Query, Axios

Languages

JavaScript, Python

Tools

Git, Postman, Sentry

04 · course-svc → postgres · query ok

Four services out of nine.

I built and maintain 4+ backend microservices in a 9+ service architecture, using Node.js and Express.js.

The biggest of these is the Course Management System v3, which I built end to end on Node.js, Express.js and PostgreSQL. I designed its REST APIs and the relational data workflows behind core course functionality.

4+of 9+ services

05 · k8s · argocd · synced

Shipped, scaled, observed.

I use Redis, Docker and Kubernetes for application performance, deployment and scalability, with GitHub Actions for CI and ArgoCD for GitOps delivery.

06 · sentry · issue captured

When it breaks, I'm there.

I troubleshoot production issues with Sentry and Postman, and I contribute to the team's engineering and code-quality practices so the same bug doesn't page us twice.

07 · puku-desktop · code tab

Now: Puku Desktop.

I'm contributing to Puku Desktop, mostly on the Code Tab, where I implement and improve core application functionality.