Telemedicine platform
Health workers schedule virtual consultations between patients and community clinic doctors, with video calls (WebRTC) and patient history.
Backend Developer in Bangladesh – Node.js & NestJS
I'm Ashak Zahin Hasan, a backend developer in Dhaka, Bangladesh. I build secure, well-structured APIs and data models with Node.js, Express and NestJS, plus ASP.NET Core and Python when a project calls for them.
I have 5+ years of professional experience and currently work as a Software Engineer L3 at ShareViral. Before that I built products at Zolo Inc., mPower Social Enterprises and Bioforge Health Systems, including national-scale health platforms in Bangladesh.
What I can build for you
- REST and GraphQL API design and development
- Authentication, authorisation and role-based permissions
- Database design and query optimisation (PostgreSQL, MongoDB, MS SQL)
- Caching and background jobs with Redis
- Third-party integrations such as OTP verification, email and external APIs
- Dockerised deployments and CI/CD on AWS
Tech stack
- Node.js
- Express
- NestJS
- TypeScript
- ASP.NET Core
- Python
- Flask
- PostgreSQL
- MongoDB
- Redis
- GraphQL
- Prisma
- Jest
- Docker
- AWS
Relevant work
VaxEPI – national vaccine registration portal
Bangladesh's official vaccine registration and management portal for the Expanded Programme on Immunization, plus its role-based admin dashboard.
ViewProduct buy & rent app
React front end on an Express, GraphQL and Prisma API.
ViewAge calculator npm package
Published Node.js package for date-of-birth and date-difference calculations.
ViewFrequently asked questions
Which backend framework do you use?
Mostly Node.js with NestJS for larger structured codebases and Express for smaller services. I also work with ASP.NET Core and Flask.
Can you work on an existing backend?
Yes. I regularly pick up existing codebases to add features, fix bugs, improve performance and add tests.
Do you handle deployment?
Yes. I can containerise the app with Docker and set up CI/CD and hosting on AWS or a platform you already use.