Open to opportunities

Iftekhar Salmin

@iftekharsalmin

Message

Backend developer specializing in Node.js, APIs, and scalable systems.

Bangladesh

Message

What I'm looking for

I seek backend-focused roles building APIs and scalable systems, with opportunities to work on cloud deployments, performance optimization, and integrations in collaborative, growth-oriented teams.

I am a backend developer focused on building robust APIs and scalable systems using Node.js and NestJS. I design and optimize databases with MongoDB and PostgreSQL to improve query performance and reduce response times.

I have hands-on experience implementing authentication and access control using JWT and OAuth 2.0, integrating third-party services such as Stripe, Google APIs, Firebase, Cloudflare R2, and AWS SES, and applying caching with Redis to speed API responses.

In recent roles I delivered full-stack projects from concept to production, used message queues (Bull) to mitigate load issues, and deployed services on AWS EC2/RDS and S3. I collaborate directly with international clients to translate requirements into working products.

I continuously refine deployment and developer workflows with Docker, Nginx, GitHub Actions, and Postman/Swagger for API documentation and testing, while pursuing practical learning like Harvard's CS50 to broaden my technical foundation.

Experience

Work history, roles, and key accomplishments

Current

Backend Developer

Current

Sparktech Agency Ltd.

Aug 2024 - Present (1 year 5 months)

Designed and optimized database schemas and queries, implemented Redis caching and Bull message queues to reduce API response times and server bottlenecks, and delivered multiple backend projects while liaising with international clients.

NestJS Redis PostgreSQL MongoDB AWS EC2 Docker JWT

Full Stack Developer

Tertiary Colour Knit Fabrics

Jan 2024 - May 2024 (4 months)

Developed a full-stack application from ground up translating business and field requirements into a production product, delivering end-to-end functionality and deployments.

Next.js React PostgreSQL MongoDB Firebase AWS EC2 Docker REST APIs

Full Stack Developer

The Abc Sourcing Ltd.

May 2023 - Sep 2023 (4 months)

Built a full-stack application from scratch by learning business logic and applying field knowledge to deliver core product features and integrations.