- ExpressJS
- MongoDB
- PostgreSQL
- REST API
- GraphQL
- Application Building Process
- Architecture
- Cloud
- Documentation
- Testing
- Unit Testing
- Acceptance Testing
- Caching
- Email and SMS
- Event Driven Development
- Distributed Login
- Serverless
- No code low code
- What is Backend Development? What is the responsibilities of Backend developer? Make a research paper about backend journey.