Open to opportunities

Mahfuzur Rahman Khan

@mahfuzurrahmankhan

Message

I lead Golang backend teams building scalable microservices, payment platforms, and reliable distributed systems.

Bangladesh

Message

At Shikho, I lead backend architecture and delivery for a 3M+ learner EdTech platform, guiding an 8-member backend team and contributing technical leadership across 30+ engineers. I design and modernize Golang microservices for learning, enrollment, payments, content delivery, and operations; I also reduced Bohubrihi’s DocumentDB CPU use from about 90% to 12% by resolving change-stream busy-polling and redundant connections.

I’ve shipped 20+ production microservices across EdTech, FinTech, e-commerce, logistics, and SaaS, including Evaly’s wallet for payments, refunds, and cashbacks serving roughly 10M users. My work spans microservices, payment orchestration, legacy migrations, API design, production reliability, and mentoring engineers, using Golang, Python, AWS, databases, messaging systems, and AI-assisted development workflows.

Experience

Work history, roles, and key accomplishments

Current

Backend Lead Engineer

Current

Shikho

Jan 2025 - Present (1 year 7 months)

Owns backend architecture and delivery for Bangladesh's largest EdTech platform, leading an 8-member backend team within a 30+ engineer organization. Diagnosed and fixed a production DocumentDB CPU bottleneck, reducing sustained CPU from 90% to ~12%.

Microservices System Design Architecture Team Leadership MongoDB PostgreSQL Redis RabbitMQ Docker Kubernetes AWS Claude Code OpenAI Codex Gemini CLI

Senior Software Engineer

Supertal Pte. Ltd.

Jul 2024 - Dec 2024 (5 months)

Served as lead backend engineer for the Hypermart Backend Team, supporting a large Indonesian grocery retail chain. Built core, discount, and seller APIs using Golang, MongoDB, MySQL, Elasticsearch, and Redis, and refactored legacy services.

MongoDB MySQL Elasticsearch Redis API Development Refactoring

SDE-II Golang Engineer, Team Lead

Shikho

Apr 2022 - Jun 2024 (2 years 2 months)

Led the Bohubrihi Backend Team, owning 7 production microservices across learners, instructors, enrollment, content, and operations. Drove migration of the WordPress monolith to a scalable microservices architecture and mentored engineers on clean architecture and code quality.

Microservices MongoDB PostgreSQL Redis RabbitMQ NATS Docker GraphQL Clean Architecture Mentor

Senior Software Engineer

Gononet Ltd.

Nov 2021 - Mar 2022 (4 months)

Designed and developed GorillaMove grocery delivery microservices covering core, inventory, and sales workflows. Delivered Choukash ERP microservices for Gononet LLC, USA, and guided junior engineers across parallel projects.

Echo PostgreSQL Docker Algolia Microservices ERP

Senior Software Engineer

Evaly Ltd.

Feb 2021 - Sep 2021 (7 months)

Built a high-throughput wallet microservice for balance payments, refunds, and cashbacks serving ~10M users. Built payment-orchestration integrations with bKash, Nagad, SSLCommerz, Balance, and Gift Card, optimizing queries and caching to reduce AWS cost and improve response times.

Python Django REST Framework PostgreSQL Redis RabbitMQ Docker Payment Integration AWS Performance Optimization

Senior Software Engineer

Dingi Technologies Ltd.

Sep 2020 - Jan 2021 (4 months)

Designed a multi-tenant SaaS platform using Django REST Framework, Elasticsearch geofence search, caching, and AWS-backed services.

Python Django REST Framework Elasticsearch AWS Caching SaaS

Software Engineer

Misfit Technologies Ltd.

May 2019 - May 2020 (1 year)

Led backend delivery for a real-time chatbot platform with Facebook/WhatsApp APIs, appointment booking, rescheduling, and queue-management workflows.

Python Django REST Framework fastAPI PostgreSQL AWS Elasticsearch Celery Redis Vue.Js Chatbot API Integration

Software Engineer / Junior Software Engineer

Brain Station 23 Ltd.

Jul 2016 - Apr 2019 (2 years 9 months)

Developed backend/full-stack features for health management, entrepreneurship, ERP, and enterprise applications; built Odoo modules and supported sprint delivery.

Python Odoo ERP Full Stack Sprint Delivery