Open to relocation & remote — worldwide

Backend engineer building production payment infrastructure that moves real money at scale.

I’m Mahmud Siddeky, specializing in Software Engineering .

View journey Projects Contact me Learn more

5+ Years Experience

Building scalable backend systems

Financial Platforms

Microfinance • Loan Management • Payment Systems

Cloud Infrastructure

AWS • Docker • CI/CD • Linux

Mahmud Siddeky

Software Engineer

Available for work

Dhaka, Bangladesh (GMT+6) • Open to relocation

PHP • Laravel • JavaScript • React js • MySQL

AWS • Docker • Linux • CI/CD • Git

English: Professional Working Proficiency

About Me

Backend engineer specializing in fintech platforms and scalable APIs.

Software Engineer with 5+ years of experience building backend and fintech systems using PHP, Laravel, MySQL, REST APIs, AWS, and Docker. Proven track record delivering payment integrations (bKash, Nagad, ShurjoPay, Pathao Pay, DBBL, MTBL), KYC onboarding, and amortization-based loan management systems for fintech and microfinance clients. I apply Repository and Service design patterns for maintainable, testable backend architecture, and work comfortably across the full software development lifecycle in Agile, cross-functional teams. I actively incorporate AI-assisted development tools (Claude Code, GitHub Copilot, OpenCode, OpenRouter) into daily workflows to speed up delivery without compromising code quality.

I have worked on microfinance platforms, loan and savings products, KYC systems, and payment integrations including bKash, Nagad, ShurjoPay, Pathao Pay, MTBL, and DBBL. My focus is building reliable backend services, maintaining clean system architecture, and delivering stable business-critical applications — open to relocating or working remotely for teams across Europe and worldwide.

Laravel & Lumen APIs Fintech Systems Payment Gateway Integration AWS & Docker MySQL Optimization Bengali — Native English — Professional Working Proficiency

Featured Projects

A few things I’ve built.

Selected work across fintech APIs, payment integrations, and backend delivery.

Fintech Product APIs

Laravel

RESTful APIs for KYC onboarding, loan products, savings products, and an amortization-based loan management system.

Laravel MySQL AWS

Details Open

Shurjopay Payment Processor

Fintech

Built the merchant panel and settlement engine for thousands of merchant accounts, with integrated gateways (bKash, Pathao Pay, MTBL, DBBL).

Laravel Lumen API Integration

Details Open

Khan Bakelite Products

Side Project

Company website for a Bangladeshi bakelite electrical components manufacturer — designed, developed, and deployed solo.

Laravel MySQL Bootstrap JavaScript

Details Open

My Journey

Career & education timeline.

From computer science foundations to production fintech systems.

REST API design Payment integrations MySQL optimization AWS & Docker Code review & mentorship

Dec 2024 – Present

Software Engineer

Analyzen Bangladesh Ltd. • Dhaka

Design and develop RESTful APIs in Laravel for KYC onboarding, loan products, savings products, and an amortization-based loan management system.
Architect and optimize MySQL databases for large-scale financial data, ensuring performance, data integrity, and reliability.
Deploy and maintain applications on AWS and containerize services with Docker for consistent environments across development, testing, and production.
Collaborate with frontend teams to integrate React.js components and contribute to backend architecture decisions.

2022 – 2024

Software Engineer

Shurjomukhi Ltd. (ShurjoPay) • Dhaka

Built the full merchant panel from scratch for thousands of merchant accounts — onboarding flows, API key management, transaction dashboards, and webhook configuration.
Implemented the settlement engine, automating daily/periodic fund reconciliation and disbursement calculations across multiple banks.
Integrated bKash, Pathao Pay, MTBL, DBBL and other payment APIs using Laravel/Lumen.
Implemented backend architecture using Repository and Service design patterns, reducing technical debt; led code reviews and refactoring initiatives.

2021 – 2022

Junior Software Developer

Infolink Ltd. • Dhaka

Developed and enhanced software features using Laravel, PHP, MySQL, and Bootstrap.
Contributed to both frontend and backend development across the full SDLC.
Used Git for source control and assisted with server deployment and application maintenance.

2017 – 2021

BSc in Computer Science and Engineering

American International University-Bangladesh (AIUB)

Beyond the Code

There's more to the story.

Details coming soon — I'll share more about what drives me outside of engineering here shortly.

Skills

What I work with.

A focused stack for building scalable fintech platforms and backend services.

Backend Development

PHP Laravel Lumen REST APIs Repository & Service Patterns

Fintech & Payments

Payment Gateway Integration bKash Nagad ShurjoPay Pathao Pay MTBL DBBL

Cloud & DevOps

AWS Docker Jenkins CI/CD Linux Nginx Apache

Database

MySQL Oracle Database Design Query Optimization

AI-Assisted Development

Claude Code GitHub Copilot OpenCode OpenRouter

Tools

Git GitHub Postman MySQL Workbench VS Code PhpStorm Jira ClickUp

In my own words

I don't just integrate payment APIs — I build the systems that make sure the money reconciles, every time.

Focus Areas

Where I add the most value.

Core areas of ownership across recent roles — from API design to production deployment.

Laravel API development

RESTful APIs for fintech/e-commerce features with clean patterns, validation, and scalable structure.

Payment & API integration

Integrations with payment gateways and third-party APIs (e.g., bKash, Pathao Pay, MTBL, DBBL).

Deployment & maintenance

AWS deployments, Dockerized services, and stable server environments on Linux with Git workflows.

Code review & mentorship

Leading code reviews and refactoring initiatives, and mentoring team members on maintainable architecture.

Active Project

Currently building.

Details coming soon

I'll share what I'm currently building here shortly.

Contact

Let’s build something great.

Send a message and I’ll get back within 24–48 hours.

Phone +880 1521-401257 Email swapnilmahmud.jobs@gmail.com LinkedIn linkedin.com/in/swapnil51/ GitHub github.com/MahmudSiddekySwapnil

Based in Dhaka, Bangladesh (GMT+6) — open to relocation and remote roles worldwide. Best contact: email or LinkedIn.