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Rezaul Karim

@rezaulkarim9

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Lead Software Engineer at Aline Mart Ltd., building a multi-brand e-commerce platform on a shared, multi-tenant core.

Bangladesh

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At Aline Mart Ltd., I lead engineering for a multi-brand e-commerce platform used across Aline Group concerns. I architected its shared, multi-tenant backend and designed commerce APIs for web and mobile, covering the catalogue, inventory, checkout and order lifecycle.

At 3DEVs IT Ltd., I managed delivery of a Management Information System and Plant Management System for Practical Action, from requirements and planning through UAT, deployment and handover. The 12-month engagement was completed on schedule, and I also contributed to architecture, backend development and code review.

At BMIT Solutions Ltd., I led the migration of an NBR-enlisted VAT management platform from PHP to Python Flask, improving performance by roughly 50% and strengthening authentication and encryption. Across my work, I’ve also delivered payment integrations and webhook systems for bKash, Nagad, Rocket and Upay.

Experience

Work history, roles, and key accomplishments

Current

Lead Software Engineer

Current

Aline Mart Ltd.

Sep 2025 - Present (1 year)

Lead the engineering team building and operating the group e-commerce platform end to end, including backend services, admin console, storefront, and mobile apps. Architected a multi-tenant backend and integrated payment gateways and logistics partners.

Laravel MySQL Redis REST APIs Docker CI CD Nginx Linux JavaScript Multi tenant architecture Payment Gateway Integration Webhooks Agile Scrum Code Review Mentorship

Senior Software Engineer (Team Lead)

Nexorabyte IT Solution

Apr 2025 - Aug 2025 (4 months)

Led design and delivery of scalable web platforms in Laravel, Next.js, and Angular, owning architecture decisions. Designed fintech solutions with high-availability APIs for real-time payment processing and integrated bKash, Nagad, Rocket, and Upay.

Laravel Next.js Angular REST APIs JWT Webhooks MySQL Database Optimization Caching Mentorship Code Review Version Control Deployment

Senior Full-Stack Software Engineer / Project Manager

3DEVs IT Ltd.

Feb 2024 - Mar 2025 (1 year 1 month)

Assigned as Project Manager for Practical Action to deliver a Management Information System and Plant Management System, completing the 12-month engagement on schedule. Owned the engagement end to end, from requirement gathering to deployment and handover.

Project Management Requirements Gathering Stakeholder Management Sprint Planning UAT Laravel MySQL REST APIs Code Review Quality Assurance Agile Scrum

System Engineer (Core / Web)

RingTech (Bangladesh) Ltd.

Oct 2023 - Jan 2024 (3 months)

Monitored carrier-grade network performance and produced quality reporting for core and web systems. Diagnosed and resolved network faults and hardware malfunctions, and handled software installation and patching.

Network Monitoring Troubleshooting NOC Software Installation Patching Linux

Senior Software Engineer

BMIT Solutions Ltd.

Apr 2022 - Sep 2023 (1 year 5 months)

Led migration of a legacy VAT management platform from PHP to Python Flask, increasing performance by roughly 50% and improving maintainability. Delivered 5+ client software applications and built RESTful APIs on Flask with MySQL powering a React front end.

Python Flask MySQL React REST APIs PHP Migration Performance Optimization Security Authentication Encryption Unit Testing Integration Testing Coding Standards

Software Engineer

Grace Web Tech Ltd.

Jan 2018 - Jun 2020 (2 years 5 months)

Delivered and maintained Laravel-based web applications for a portfolio of business clients. Analyzed customer requirements and proposed technical solutions with realistic effort estimates.

Laravel PHP Web Development Requirements Analysis Third Party Integrations Deployment

Software Developer

RAWN Technologies Ltd.

Mar 2012 - May 2016 (4 years 2 months)

Implemented Openbravo ERP end to end, including installation, customization, development, and testing for enterprise clients. Administered PostgreSQL databases and deployed Ubuntu, Apache Tomcat, and Apache HTTP Server environments.