Hi, I'm

Mirza Usman Tahir

Senior Full Stack Engineer

I build scalable backend services|

Backend architecture with NodeJS, ExpressJS & NestJS
Pixel-perfect frontends with ReactJS & TypeScript
Cloud & DevOps on AWS, Docker and CI/CD
Security first mindset

Get to know me

About Me

A highly accomplished Senior Full-Stack Engineer with over 9 years of experience architecting, developing, and deploying robust, scalable, and user-centric web applications.

Proven expertise in leading end to end project lifecycles, from designing complex backend services in NodeJS (Express, NestJS) and managing databases (Postgres, MongoDB) to crafting responsive, pixel-perfect user interfaces with modern frameworks like React and Angular.

A strategic problem-solver dedicated to mentoring teams, driving technical excellence, and building high-impact digital solutions.

Years Experience

20+

Projects Delivered

10+

Core Technologies

What I work with

Skills & Expertise

ReactJS

Expert

Component-driven UIs, Redux, hooks, micro-frontends.

NodeJS

Expert

Scalable services, streaming pipelines and REST APIs.

AWS

Advanced

S3, SQS, SNS, SES, EC2 and Lambda Functions.

TypeScript

Expert

Type-safe apps across React & Angular with ES6+ mastery.

NestJS

Advanced

Modular, testable backends with dependency injection.

PostgreSQL

Advanced

Relational design, TypeORM/Sequelize, performance tuning.

MongoDB

Advanced

Document modelling for high-throughput workloads.

Redis

Intermediate

Caching, queues and real-time data layers.

Docker

Advanced

Containerised workflows and reproducible environments.

Sequelize

Advanced

ORM modelling, migrations and query optimisation for SQL.

TypeORM

Advanced

Entity-driven data access with TypeScript-first APIs.

Jest

Advanced

Rigorous unit & integration test coverage.

Where I've worked

Experience

03/2024 – Present

Senior Full Stack Engineer

Emumba Inc. · California, USA (Remote)

Architecting and developing key features for a large-scale Decision Intelligence System for a US-based client, contributing across the full technology stack.
Leading the strategic migration to a modern micro-frontend architecture to enhance scalability, modularity and development velocity.
Engineered a custom-built, reusable styling library, establishing a consistent, high-quality design system across the application.
Actively participate in the hiring process by conducting technical interviews for senior engineering candidates.

07/2023 – 02/2024

Senior Software Engineer

Noorix Tech. · Sydney, Australia (Remote)

Engineered a complete subscription module for a Tip Management System, integrating Chargebee for recurring payments and trials, which directly increased product profitability.
Developed robust backend cron jobs ensuring seamless data synchronization across multiple platforms.
Implemented secure credit/debit card transaction handling across backend logic and frontend UX.

06/2021 – 07/2023

Senior Software Engineer II

10Pearls, LLC · Islamabad, PK

Awarded Employee of the Month (Sept 2021) for outstanding technical contributions among 1500+ employees.
Architected a full-stack notifications module using Google Cloud Messaging with a real-time frontend interface.
Engineered a high-performance Chrome extension with a 'bot mode' for parallel execution, significantly improving data-collection efficiency.
Developed backend data cleaning services with NodeJS & Sequelize, enhancing an AI-based recommendation engine.

09/2019 – 06/2021

Web Engineer

Bitsol Technologies · Islamabad, PK

Designed and developed responsive, mobile-first applications using the MERN stack.
Implemented secure authentication & authorization flows using JWT and PassportJS.
Designed and consumed REST APIs with Bootstrap and MaterialUI front-ends.

07/2016 – 09/2019

Software Engineer

JIN Technologies · Islamabad, PK

Built a live leader board for horse-racing grounds using Node-Red, processing real-time trackside camera data.
Executed a complete data migration between project-management tools (Basecamp → Wrike) via their REST APIs.
Built a ticket management module in PHP Symfony and DB cleaner services for a large-scale MySQL database.

My background

Education & Certifications

Education

Masters in Computer Science

2021

Riphah International University · Islamabad, PK

B.E. in Information Technology

2016

UET Taxila · Islamabad, PK

Certifications & Awards

JavaScript (Advanced) — HackerRank
Problem Solving (Intermediate) — HackerRank
Employee of the Month — Bitsol (March 2020)
Employee of the Month — 10Pearls (Sept 2021)

Some of my work

Featured Projects

Emumba

24/7 Patient Surveillance System

A real-time patient monitoring platform for remote doctor consultations. It ingests continuous IoT data streams (blood pressure, glucose, heart rate) through an AWS SQS pipeline, with a live ReactJS dashboard for visualization, trend analysis and alerts on critical vitals.

NodeJSReactJSPostgreSQLAWS SQSWebSocketsIoT

Noorix

Tip Pool Management System

A comprehensive system to manage and distribute employee tips. The secure backend handles recurring subscriptions, payment processing and automated cron jobs, paired with a real-time ReactJS and WebSockets frontend.

ExpressJSReactJSTypeORMWebHooksLambdaJest

10Pearls

Betts Recruiting ATS

End to end features for a US recruitment platform. Backend data cleaning services refine candidate data for an AI engine, and a sophisticated Chrome extension fetches and displays multi-source data for recruiters.

AngularExpressJSSequelizeElasticSearchRedisChrome Extension

Code I've shared