mohaiminul.online
@mdmuaj13

Bringing Ideas to Reality ⚡

Hey there 👋 I'm Md Mohaiminul Hasan a.k.a Muaz - A generalist engineer who refuses to be put in a box. Whether it’s web, mobile, server, embedded systems, or AI, I love building elegant, scalable systems that solve real problems. But if I had to choose my happy place, it’s deep in the backend — designing robust architectures, optimizing databases, and writing clean, maintainable services that scale like magic. I care deeply about code quality, system performance, and designing architectures that can grow without breaking.

Backend: NestJS, Express.js, Fastapi, Flask, Laravel, Go

Frontend: React, Next.js, TailwindCSS, Headless UI, ShadCN UI

Javascript runtime: Node.js, Bun, Deno

Database: PostgreSQL, MySQL, MongoDB, Redis

Cloud: AWS, Docker, K8s, Pub/Sub, Cloudflare, Firebase, Supabase

Firmware: Node.js, Bun, Deno, Python, C++

FourBit

Contract
Remote

Senior Software Engineer

September 2023 – Present
  • Delivered 4 major releases ahead of schedule, boosting client satisfaction by 25%
  • Led development of 3 full products — from architecture to launch
  • Introduced AWS Lambda, cutting infra costs by 30% and scaling to 10K+ concurrent users
  • Stack: TypeScript, NestJS, FastAPI, Next.js, Postgres, MongoDB, Redis, RabbitMQ, AWS, Azure, Socket.io

Ok2StandUp Inc.

Full-time
Remote

Senior Backend Engineer

March 2024 – April 2025
  • Refactored legacy codebase to eliminate tech debt and enable new product launches
  • Optimized AWS usage, reducing costs by 40%
  • Migrated to monolith architecture, cutting deploy times by 30% and improving response time by 45% with Redis
  • Stack: FastAPI, NestJS, MongoDB, AWS Kinesis, Lambda, CloudFront, Redis, Socket.io

Algosolver LLC

Full-time
Remote

Senior Software Engineer

March 2021 – August 2023
  • Designed and led backend architecture across multiple projects
  • Built scalable microservices for Woofmeets.com, which hit 50K users in 2 months
  • Reduced API response times by 40% using Redis + NestJS
  • Stack: TypeScript, NestJS, Next.js, Postgres, MongoDB, Redis, Prisma, Firebase, AWS, GCP

Landknock Ltd.

Full-time
Dhaka, Bangladesh

Backend Developer

July 2020 – January 2021
  • Created and maintained REST APIs for a SaaS platform
  • Optimized SQL queries by 20%, improving overall performance
  • Stack: Laravel, PHP, MySQL, Redis, Socket.io, VPC