ZTechUniverse

Zain Munir

Senior Backend Developer

Results-driven Backend Software Engineer with 5+ years of experience designing and building scalable microservices and RESTful APIs using Node.js, TypeScript, and NestJS. Proven tr…

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Professional Summary

Results-driven Backend Software Engineer with 5+ years of experience designing and building scalable microservices and RESTful APIs using Node.js, TypeScript, and NestJS. Proven track record of decomposing monolithic architectures, integrating third-party payment gateways, and deploying cloud-native services on AWS. Experienced in EdTech and e-commerce with a strong focus on system performance, reliability, and clean code.

Experience Timeline

Software Engineer — Backend

SimpliEd | Karachi, Pakistan

Jan 2023 – Present

Architected payment microservices, student invoicing APIs, and bulk email pipelines. Decoupled legacy codebase into microservices.

  • Architected a universal payment-receiving microservice enabling any bank to integrate online payment processing.
  • Engineered student invoicing APIs to automate fee collection workflows.
  • Integrated Bull Queue and Redis for reliable bulk email dispatch.

Software Engineer — Backend

Alpha Mu Digital Ventures | Karachi, Pakistan

Sep 2022 – Dec 2022

Built web scraping APIs with Python/FastAPI, data migration microservices, and AWS deployment.

  • Built web scraping APIs to extract product data from e-commerce platforms at scale.
  • Developed data migration microservice from Firebase to PostgreSQL.
  • Containerized and deployed microservices to AWS using AWS Copilot.

Software Engineer — Backend

Queno | Karachi, Pakistan

Dec 2019 – Aug 2022

Led decomposition of monolith into microservices; integrated payment gateways and QuickBooks API.

  • Led decomposition of monolithic application into microservices architecture.
  • Integrated ForeePay and BlinQ payment gateways; QuickBooks API for financial record-keeping.
  • Built finance microservice for real-time balance sheets and income statements.

Skills Overview

Grouped by area: Languages, Frameworks, Databases, Cloud & DevOps, Architecture.

Languages

  • JavaScript (ES6+)
  • TypeScript
  • Python

Frameworks & Libraries

  • Node.js
  • NestJS
  • Express.js
  • FastAPI

Databases

  • MongoDB
  • PostgreSQL
  • Redis
  • Firebase

Cloud & DevOps

  • AWS (Copilot, EC2, S3)
  • Docker
  • CI/CD Pipelines

Architecture

  • Microservices
  • RESTful APIs
  • Event-Driven
  • Bull Queue

Education

Master of Science in Computer Science & IT (MSCSIT)

NED University of Engineering and Technology

2021 – 2023

Core courses: Advanced Algorithms, Database Systems, Computer Networks, Operating Systems, Research Methods. Electives/t…

Bachelor of Science in Computer Science (BSCS)

University of Karachi

2016 – 2019

Core courses: Programming I & II, Data Structures & Algorithms, Computer Architecture, Operating Systems, Database Syste…