Joynal Abedin Parag — Principal Software Engineer

About Me

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Principal Software Engineer with 12+ years building SaaS platforms, EdTech products, IoT systems, and government digital services. I architect microservices, produce Technical Design Documents, lead engineering teams, and deliver full-stack solutions with TypeScript, NestJS, and Next.js.

Currently at Daniyal Technologies Ltd leading a scalable SaaS POS platform. Previously at Samsung R&D Institute Bangladesh, Divergent Technologies, and Chattogram Development Authority.

Experience Timeline

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Principal Software Engineer

Daniyal Technologies Ltd — SaaS POS platform, microservices, CI/CD

2026 - Present

Team Lead, Software Development

Divergent Technologies Ltd — EdTech platform (NestJS, Next.js, React Native)

2024 - 2025

Assistant Programmer

Chattogram Development Authority — Government digital services

2022 - 2024

Lead Engineer

Samsung R&D Institute Bangladesh — IoT remote testing, serial comms, device QA

2018 - 2022

Sr. Software Engineer

ServicEngineBPO, Dhaka

September 2015 - September 2018

Software Engineer

CloudWell Limited, Dhaka

October 2014 - August 2015

Web Developer

One Leap Microsystem, Chittagong

March 2013 - September 2014

Skills

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TypeScript NestJS Next.js React React Native Node.js PostgreSQL Redis MongoDB AWS S3 Docker System Design PHP Python Team Leadership

Projects

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SaaS POS Platform

Role: Principal Engineer @ Daniyal Technologies

Microservices-based POS SaaS — NestJS, Next.js, PostgreSQL, Redis, CI/CD pipelines, team leadership.

Promise School Platform

Role: Team Lead @ Divergent Technologies

Gamified EdTech — React Native mobile app, Next.js landing & admin, NestJS API with PostgreSQL, Redis, payments.

Remote Testing Platform

Role: Lead Engineer @ Samsung R&D

Remote serial device testing with live webcam for IoT QA — Samsung Air Dresser device testing.

KGDCL Welfare Portal

Role: Full-stack Developer

Welfare association portal — employee directory, admin CMS, gallery, elections, self-service profiles.

App Builder

Web interface for customizing mobile apps with Android (.apk) and iOS (.ipa) download generation.

E-bike Rental

E-commerce platform for selling electric e-bikes from leading brands.

PDS CRM

CRM for Paywell to manage retailers, devices, and account balances.

Open Source (8⭐+)

WordPress CRUD plugins, JWT REST APIs, Jenkins integrations — see GitHub.

Education

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Noakhali Science & Technology University

Computer Science & Telecommunication Engineering

2008 - 2013 | CGPA: 3.42 out of 4