Kamrul Hasan

Senior Software Engineer

Evidentbd • Fulltime

Dec 2023 - Present • 2 yrs 7 mos

Currently working as a Senior Software Engineer and Team Lead at Evidentbd, leading the design and development of scalable, high-performance backend systems and microservices architectures. Optimized distributed services to improve overall system performance by 30–60% while ensuring reliability and fault tolerance. Led backend development for a multi-channel e-commerce operations platform integrating major marketplaces such as Amazon, eBay, Shopify, WooCommerce, Temu, and TikTok. Built real-time order, inventory, and shipping synchronization pipelines using Django, FastAPI, Celery, RabbitMQ, and Webhooks, enabling seamless communication between marketplaces and warehouses. Implemented intelligent SKU mapping and automated fulfillment workflows, reducing manual reconciliation by 40%. Architected and developed HR and workforce management platforms, including employee onboarding, biometric attendance (face and fingerprint), GPS verification, payroll automation, leave management, and reporting dashboards. Designed Celery-based background pipelines for real-time sync, inventory updates, and resilient inter-service communication. Integrated multiple third-party APIs such as Amazon SP-API, FedEx, DHL, and Royal Mail for automated shipping, tracking, and logistics workflows. Actively mentored team members, conducted code reviews, and collaborated with stakeholders to deliver production-ready, scalable solutions using cloud-native and DevOps best practices.

Software Engineer

Intelectra • Fulltime

Jan 2022 - Dec 2023 • 1 yr 11 mos

Worked as a Software Engineer at Intelectra, where I played a key role in designing and developing a job searching and matching platform. Built and maintained scalable backend systems using Django and FastAPI, focusing on performance, security, and clean architecture. Developed RESTful APIs to support job listings, candidate matching, authentication, and data management. Collaborated on frontend development using React and Next.js to deliver responsive, user-friendly interfaces. Containerized applications using Docker to streamline development, testing, and deployment workflows. Worked closely with product managers and designers to translate business requirements into reliable technical solutions. Actively participated in code reviews, debugging, and optimization to ensure high-quality, production-ready software.