Senior Software Engineer / Dhaka, Bangladesh

I build backend systems, API integrations, and full-stack product features.

Backend and full-stack engineer building APIs, Shopify apps, cloud functions, integration workflows, sync systems, and product features with TypeScript, Node.js, Nest.js, Remix, Express.js, GCP, MongoDB, Firestore, and Prisma.

Experience View work GitHub

Experience: 5+ years experience
Current role: Senior Software Engineer (L5)
Live platform: Founder of Code to HaveN
Freelance trust: 50+ Fiverr client reviews

Feb 2023 - Present3 yrs 6 mos

Full-time / Remote

Bevy Commerce

Toronto, Ontario, Canada

Building Shopify apps, cloud functions, Bevy OrderPilot workflows, integration systems, and product features across backend and frontend systems.

Senior Software EngineerL5
Jun 2026 - Present2 mos
Promoted to senior level after owning production features, integrations, and performance-focused engineering work.
Software EngineerL4
Feb 2023 - Jun 20263 yrs 4 mos
Built and maintained full-stack product features, Shopify app integrations, cloud functions, and sync systems.

Owned backend workflows for Bevy OrderPilot, including custom orders, quotes, deposits, purchase orders, vendors, receiving, and multi-location flows.
Implemented OrderPilot workers, cron jobs, Shopify webhook handling, product sync behavior, and PostHog analytics instrumentation.
Built Google Cloud Functions for Shopify product and inventory sync for the Portless App.
Built interval-based order tracking sync functionality using Express.js.
Refactored and optimized code runtime from 10h to 6h.
Built Cart Share Incentive functionality for the Bevy Share Cart App.
Worked with Shopify APIs, GraphQL, GCP, Firestore, MongoDB, PostgreSQL and Prisma.

Aug 2021 - Jan 20231 yr 5 mos

Full-time / Remote

Felicity Digital

London, United Kingdom

Built API servers, GraphQL services, Valerian integrations, Worktab desktop features, and frontend product workflows for client systems.

Backend Engineer
Jan 2022 - Jan 20231 yr
Promoted to backend-focused engineering work after contributing across the stack.
Full-stack Developer
Aug 2021 - Jan 20225 mos
Joined as a full-stack developer and worked across backend APIs, frontend features, and integrations.

Built Valerian backend integration services with NestJS and GraphQL for HubSpot, Codat, and external business APIs.
Added Worktab desktop activity tracking features in an Electron.js product workflow.
Built RESTful API servers using NestJS.
Built GraphQL services with NestJS.
Built frontend features using Svelte and SvelteKit.
Integrated external APIs including HubSpot and Codat.

Feb 2021 - Jul 20232 yrs 5 mos

Part-time / Remote

Encodemy

Taught full-stack web development to 1000+ learners with a focus on practical MERN stack application building.

Instructor
Feb 2021 - Jul 20232 yrs 5 mos
Taught a full-stack MERN web development course and helped students build practical web projects.

Taught 1000+ learners through a full-stack MERN and JavaScript course.
Taught HTML, CSS, Bootstrap, JavaScript, React.js, Node.js, and Express.js.
Helped students understand MySQL, MongoDB, and backend fundamentals.
Supported students through project-based learning.

Freelance - Present

Freelance / Remote

Fiverr

Freelance web development work with public client trust through Fiverr reviews.

Freelance Web Developer
Freelance - Present
Delivered web development work for international clients with a strong review history.

Worked with 50+ client reviews on Fiverr.
Delivered full-stack and web development projects for clients.
Built credibility through client-facing delivery and communication.

M.Sc. in Computer Science and Engineering

United International University / Dhaka, Bangladesh

Graduate study focused on computer science and software engineering foundations.

B.Sc. in Computer Science and Engineering

United International University / Dhaka, Bangladesh

Built academic projects across backend systems, database design, and web applications.
Won first prize in the DBMS category at the UIU Software Project Show.

LivePersonalFounder project

Code to HaveN

A live programming education platform I founded to publish problem-solving explanations and learning resources for newcomers.

New programmers often struggle to connect solved problems with clear explanations they can learn from.

Founded the platform and built the programming blog experience.
Published problem-solving content to help learners understand approaches and implementation details.
Created a full MERN stack YouTube playlist with 200+ videos.
Grew the website to 950,000+ views.
Extended the learning effort through a same-name YouTube channel.

Visit site YouTube

Case studyOffice work

Portless

Shopify product and inventory sync workflows for the Portless App using cloud functions and third-party integrations.

Merchants needed reliable product and inventory sync between Shopify and external systems.

Built Google Cloud Functions for product and inventory synchronization.
Integrated Shopify APIs and GraphQL workflows for commerce data movement.
Connected multiple third-party APIs, including Mabang ERP, Sellercloud, ShipStation, Pipe17 and many more.
Worked on production sync behavior for the Portless App.

Visit site

Case studyOffice workBackend owner

Bevy OrderPilot

Backend system ownership for a Shopify app that supports custom orders, quotes, deposits, purchase orders, vendors, receiving, and multi-location workflows.

Furniture retailers needed a modern Shopify POS and Admin workflow for complex custom orders, product creation, purchase orders, brand/location management, and reliable two-way sync.

Owned database design for order, product, location, brand, and app settings flows.
Managed backend order and product workflows across Shopify and app data models.
Implemented multiple workers and cron jobs for order and product two-way sync.
Handled Shopify webhook management for backend event processing.
Integrated PostHog analytics and improved backend code performance.

Shopify app

Case studyOffice work

Bevy Share Cart Incentive

A product feature for adding cart share incentive behavior to the Bevy Share Cart App.

The product needed an incentive flow to support cart sharing behavior and improve user engagement.

Built the Cart Share Incentive functionality.
Integrated Firestore to store app install records and cart data.
Worked across product requirements, backend logic, and application integration.
Contributed to a production Shopify app workflow.

Shopify app

Case studyOffice work

Valerian

A backend integration project connecting external business APIs through a NestJS and GraphQL service layer.

Case studyOffice work

Worktab

A desktop productivity application built with Electron.js, focused on user activity tracking and a practical product interface.

Case studyAcademic

Containerization of Microservices

A capstone project combining microservice architecture and containerization into a developer-friendly workflow.

JavaScript
TypeScript
C/C++
Java
Python

Node.js
Express.js
NestJS
GraphQL
REST APIs

React
Next.js
Remix
Svelte
SvelteKit
Tailwind CSS

MongoDB
PostgreSQL
MySQL
Firestore
Prisma

Google Cloud Platform
AWS S3
Docker
Kubernetes
Git
GitHub
Jest
PostHog

n8n
Cursor
Claude
Codex

Shopify API
Shopify GraphQL
HubSpot
Codat

Performance impact

10h to 6h runtime

40% faster

Optimized a long-running production workflow by improving data handling and lookup strategy.

Before10h

After6h

Updated the data structure
Kept frequently-read records in memory
Replaced repeated loop lookups with constant-time access

Commerce backend ownership

Shopify systems and integrations

Built product and inventory sync, custom order workflows, workers, webhooks, analytics flows, and API integrations across Shopify, HubSpot, Codat, GraphQL, and REST systems.

Portless Shopify app

Teaching

MERN instructor

Taught full-stack web development with JavaScript, React, Node.js, Express.js, MySQL, and MongoDB. Guided students through practical projects, backend fundamentals, API design, database work, and deployment-ready application structure.

Achievement

UIU Software Project Show winner

Won first prize in the DBMS category for the University Admission Seeker project. Built the backend for admission discovery, hotel search, accommodation booking support, and location-based flows using Mapbox.

Available for thoughtful engineering work

Let's talk about backend systems, full-stack apps, integrations, or teaching.

I am easiest to reach by email or LinkedIn. Share the product context, current bottleneck, and the outcome you want, and I will respond with a clear next step.

Email me LinkedIn

I build backend systems, API integrations, and full-stack product features.

Experience

Bevy Commerce

Senior Software EngineerL5

Software EngineerL4

Felicity Digital

Backend Engineer

Full-stack Developer

Encodemy

Instructor

Fiverr

Freelance Web Developer

Education

M.Sc. in Computer Science and Engineering

B.Sc. in Computer Science and Engineering

Selected Work

Code to HaveN

Portless

Bevy OrderPilot

Bevy Share Cart Incentive

Valerian

Worktab

Containerization of Microservices

Skills

Languages

Backend

Frontend

Data

Cloud & Tools

Automation & AI

Commerce

Proof

10h to 6h runtime

Shopify systems and integrations

MERN instructor

UIU Software Project Show winner

Contact

Let's talk about backend systems, full-stack apps, integrations, or teaching.