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MD Tajbir Hossain

@tajbirhossain

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I build reliable backend systems and full-stack products with Node.js, PostgreSQL, Redis, and TypeScript.

Bangladesh

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What I'm looking for

I'm seeking a remote backend or full-stack role at a product company where I can build reliable APIs, SaaS products, and scalable systems.

I've delivered 100+ SaaS, API, and mobile-app projects for US, UK, and EU clients as an independent full-stack software engineer. I build production systems with Node.js, Express.js, TypeScript, PostgreSQL, Redis, BullMQ, and Docker.

My work includes a subscription tracker with concurrency-safe writes, idempotency, background jobs, Gemini-powered extraction, and load-tested reliability, plus a Google Play marketplace app with 2,050+ downloads. I also fixed a high-traffic inventory race condition that eliminated overselling under concurrent checkout requests.

Experience

Work history, roles, and key accomplishments

Current

Independent Full-Stack Software Engineer

Current

Self Employed

May 2020 - Present (6 years 5 months)

Delivered 100+ client projects across SaaS, APIs, and mobile apps for US, UK, and EU clients. Owned full delivery cycles independently, including requirements, architecture, implementation, deployment, and post-launch support.

TypeScript PostgreSQL MongoDB Prisma Docker Redis BullMQ REST APIs JWT RBAC Jest Supertest

Frontend Web Developer

Tortoiz Themes

Jan 2021 - Dec 2021 (11 months)

Built commercial React templates for ThemeForest with reusable components and cross-browser compatibility. Improved render performance on low-end devices, supporting sustained sales and positive customer ratings.

React HTML5 Browser compatibility Performance Optimization