$ whoami

Ashadul, Building the future.

Fullstack engineer obsessed with high-performance backends, event-driven microservices and the kind of clean architecture that ages well. I write TypeScript & Python for a living — and react/Next when the frontend asks nicely.

Download résumé See projects
→ Dhaka, BD → Available for collaboration → ~4 yrs shipping production code

01 — about

About

I'm a fullstack engineer who treats backend code like it's going into production on a Friday afternoon — because it usually is. My happy place is designing event-driven microservices, taming gnarly business logic and making databases sing.

Lately I've been deep in the trenches building an OTA platform — 5 microservices, RabbitMQ at the core, handling everything from inventory to bookings in real-time.

I also designed and shipped a SaaS ecommerce engine that turns a blank canvas into a live, fully operational store in 10 minutes flat — think Shopify, but built from the ground up.

02 — toolbelt

Toolbelt

The languages, frameworks and infra I reach for when something needs to be built right.

01 · Languages

  • Python
  • JavaScript
  • TypeScript

02 · Frameworks

  • ExpressJS
  • NestJS
  • FastAPI
  • React
  • NextJS

03 · Databases

  • PostgreSQL
  • MySQL
  • SQLite
  • Redis
  • MongoDB
  • VectorDB

04 · Tooling

  • RabbitMQ
  • Docker
  • Git
  • Linux
  • WebSockets
  • GraphQL
  • LangChain
  • LangGraph
  • RAG

03 — experience

Experience

Where I've been writing production code.

  1. Dec 2025 — Present

    Potential

    Software Engineer

    Seoul, South Korea

    • ›Architected and led backend infrastructure, designing high-throughput REST APIs and microservices in NestJS to power scalable, production-grade systems.
    • ›Engineered Coaching Record end-to-end (NestJS, PostgreSQL, React) to connect athletes, coaches, and families with real-time progress tracking and subscription-based monetization.
    • ›Contributed to frontend development using React, ensuring end-to-end feature delivery.

  2. Mar 2023 — Nov 2025

    Bit Byte Technology

    Software Engineer

    Dhaka, Bangladesh

    • ›Maintained a SaaS platform handling 10M+ requests per month, ensuring high availability and performance.
    • ›Reduced AWS S3 costs by implementing a custom CDN system, optimizing storage and delivery expenses.
    • ›Lead the backend development at Australia Govt Project Acceler8.
    • ›Developed the e-commerce SaaS product Bit Commerce.

  3. Jan 2022 — Feb 2023

    Decode lab

    Junior Software Engineer

    Dhaka, Bangladesh

    • ›Optimized the admin panel for best practicify project, dramatically cutting loading time from 50 seconds to 10 seconds.
    • ›Solved complex MERN frontend challenges, mentored teammates, and ensured on-time delivery.
    • ›Built and shipped diverse category websites including e-commerce platforms, law firm sites, Bangladesh government portals, delivery systems, and ERP solutions.

04 — selected work

Selected work

A few systems I've had the privilege of architecting, breaking and rebuilding.

project_01

Live site ↗

Hazetrip

SaaS OTA platform for flight, hotel & tour bookings with real-time GDS pricing and sub-5-second search.

  • ›Led backend team for a B2B OTA platform using NestJS microservices and PostgreSQL.
  • ›Integrated four Global Distribution Systems (GDS) to deliver flight search results under 5 seconds.
  • ›Mentored junior developers and optimized system performance for high booking throughput.
MicroservicesDockerKubernetesMySQLMongoDBRedisGDSAWS

project_02

Live site ↗

BitCommerz

SaaS e-commerce product letting shop owners register, set up their store, and start selling online instantly.

  • ›Built product/SKU, cart, wishlist, payment, RBAC & media management modules in NestJS + TypeORM.
  • ›Maintained platform handling 10M+ requests/month with high availability and performance.
  • ›Cut AWS S3 costs by implementing a custom CDN for optimized storage and delivery.
  • ›Collaborated with frontend teams to deliver a seamless, high-performance user experience.
NestJSTypeORMReactNext.js

project_03

Live site ↗

Gadget and Gear

Backend for a fast-growing online gadget & electronics e-commerce storefront.

  • ›Contributed to the NestJS backend powering product catalog, checkout, and order management.
  • ›Implemented Redis caching to significantly improve response times and system performance.
  • ›Optimized databases (MongoDB & MySQL) and scaled the infrastructure on AWS.
MongoDBMySQLNestJSRedisAWS

project_04

Live site ↗

Acceler8

Virtual course marketplace connecting Australian students with RTOs via seamless online payments.

  • ›Led backend development using NestJS, Knex.js, and MySQL deployed on AWS.
  • ›Supported frontend development in Vue.js for course discovery and enrollment flows.
  • ›Designed course request, purchase, and online payment gateway integrations.
NestJSVue.jsKnex.jsMySQLAWS

project_05

Live site ↗

Fuel Dash

On-demand fuel delivery app with real-time tracking and secure in-app payments.

  • ›Architected and maintained the backend using Node.js and NestJS with MongoDB.
  • ›Deployed and managed production infrastructure on AWS for high availability.
  • ›Integrated Stripe for secure in-app payments and implemented security best practices.
Node.jsNestJSReactJSMongoDBDockerAWSStripe

project_06

Live site ↗

SSG

Scalable e-commerce for Super Star Group with secure payments, EMI, and full product lifecycle management.

  • ›Developed backend modules for product/SKU, cart, wishlist, and payment gateway integration.
  • ›Built role-based access control (RBAC) and media management systems.
  • ›Collaborated closely with the React/Next.js frontend team for end-to-end delivery.
NestJSTypeORMReactNext.js

project_07

Live site ↗

Coaching Record

Health & fitness app connecting athletes, coaches & families with progress tracking and real-time updates.

  • ›Built the NestJS + PostgreSQL backend, handling APIs and core application logic.
  • ›Developed React frontend features for both Coach and Athlete mobile applications.
  • ›Integrated RevenueCat for in-app subscriptions and Firebase Cloud Messaging for push notifications.
ReactNodeJSNestJSPostgreSQLRedisAWSRevenueCatFirebase

05 — let's build something.

Let's build something.

Got a backend that needs taming or a system that needs scaling? My inbox is open.

Email

ashadulmridhaprog@gmail.com

GitHub

github.com/ashadulislam708-lab

LinkedIn

linkedin.com/in/ashadulmridha