Sabbir Ahamed

Senior Software Engineer

GOLDKINEN TECHNOLOGIES LTD • Full-time

Nov 2022 - Present • 3 yrs 6 mos

Technologies: Python, FastAPI, AWS Lambda, S3, SQS, Cognito, EventBridge, DynamoDB, Oracle, PostgreSQL, Redis, Celery, Docker, CI/CD Responsibilities: • Worked as a backend engineer on Gold Kinen, Bangladesh’s first gold buy, sell, and gift-collecting application. • Developed backend features using FastAPI and AWS Lambda to ensure scalability and high availability. • Utilized AWS DynamoDB for low-latency, high-throughput data storage, and Integrated AWS S3 for secure file storage, EventBridge for scheduled task execution, and Cognito for user authentication and authorization. • Implemented asynchronous background tasks using Celery with AWS SQS as the task queue, and used Redis for task management and caching. • Led CI/CD pipeline configuration using Docker and GitHub Actions, with deployment managed via Nginx. • Occasionally contributed to backend development using Node.js, assisting with specific service integrations and feature modules where needed.

Junior Software Engineer

ARBREE LIMITED • Full-time

Feb 2021 - Nov 2022 • 1 yr 9 mos

As a Backend Developer at Arbree Solution, I was responsible for building scalable, secure, and high-performance backend systems across multiple web and mobile applications. I worked closely with cross-functional teams to design and develop RESTful APIs, manage complex data models, and implement backend logic to support business-critical operations.