Portfolio

Systems Built for
Real-World Scale

A curated look at the backend systems, platforms, and infrastructure I've architected and shipped over the past six years.

Telecom · Mobile Platform

MyGP — Grameenphone

Grameenphone / eGeneration PLC · 2021 – Present

📱

Backend microservices powering Bangladesh's largest mobile operator app. I built and maintain the offers, recharge, and value-added services APIs for a platform with 30M+ active users. Achieved 99.9% uptime with sub-second API responses by implementing Redis caching, Nginx edge caching, and async processing pipelines.

⚡
16s → 0.8s
API Response Time
📉
60%
DB Load Reduction
👥
30M+
Active Users
⏱️
99.9%
Uptime SLA
PHP Laravel Golang Node.js MySQL Redis RabbitMQ Docker Kubernetes Nginx Jenkins GitLab CI/CD

NGO · GIS Data Visualization

GIS Dashboard — UNICEF

UNICEF Bangladesh · 2022

🌍

Led backend architecture and API development for a large-scale geographic information system visualization platform used by UNICEF for data-driven decision making. Built optimized APIs serving complex geographic and statistical datasets, coordinated backend-frontend integration, and delivered production-ready infrastructure.

📊
5s → 300ms
API Response Time
🗺️
Complex
Geo Query Optimization
🔗
Full
Backend-Frontend Integration
PHP 8.4 Laravel Vue.js MySQL Redis Nginx Ubuntu VM Leaflet.js

Healthcare · Compliance

eLogbook — BCPS

Bangladesh College of Physicians and Surgeons · 2022 – 2023

🏥

Designed microservices architecture for a healthcare compliance and training logbook platform used by medical professionals. Led a 10-member development team, conducted requirement analysis, managed sprint planning, and delivered secure APIs with RBAC, encrypted communications, and audit-ready data handling.

👩‍⚕️
10
Team Members Led
🔒
Encrypted
Secure Communications
📋
Audit-Ready
Compliance Logging
PHP 7.4 Laravel PostgreSQL React.js Kubernetes Microservices Docker GitLab CI/CD

Logistics · SaaS

Parcel Booking Software

Datatech BD Ltd. · 2019 – 2021

📦

A comprehensive parcel booking and tracking system for logistics companies, featuring real-time shipment tracking, automated notifications, customer management, and reporting dashboards. Improved API performance by 40% through query optimization and proper database indexing.

🚀
40%
API Performance Gain
⏱️
99%
Uptime
PHP Laravel MySQL RESTful API Nginx

Hospitality · POS

Restaurant POS System

Datatech BD Ltd. · 2019 – 2021

🍽️

A full-featured point-of-sale system for restaurants with order management, kitchen display integration, inventory tracking, employee management, and real-time reporting. Built with Laravel MVC architecture and RESTful APIs for seamless frontend integration.

📊
Real-time
Reporting Dashboard
🔗
RESTful
API Architecture
PHP Laravel MySQL MVC RESTful API jQuery

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