1. Backend Development: 

• o Design, develop, and maintain scalable backend applications using Node.js, Express.js, Nest.js, or similar frameworks. 

• o Write clean, maintainable, and efficient code while adhering to best practices. 

2. API Development & Integration: 

• Develop RESTful and GraphQL APIs to support frontend and mobile applications. 

• Integrate third-party APIs and microservices efficiently. 

3. Database Management: 

• Design and manage SQL (MySQL, PostgreSQL) and NoSQL (MongoDB, Redis) databases. 

• Write optimized queries and ensure database performance. 

4. Performance Optimization & Security: 

• Implement caching strategies using Redis, Memcached, or similar technologies. 

• Ensure application security, authentication, and authorization using OAuth, JWT, or Passport.js. 

5. Microservices & Cloud Deployment: 

• Develop and maintain microservices-based architectures. 

• Deploy and manage applications on AWS, Azure, or Google Cloud. 

• Work with containerization tools like Docker and Kubernetes. 

6. CI/CD & DevOps Integration: 

• Implement CI/CD pipelines using Jenkins, GitHub Actions, or GitLab CI/CD. 

• Automate testing and deployment processes. 

7. Code Reviews & Documentation: 

• Conduct code reviews and mentor junior developers. 

• Document technical designs, API specifications, and best practices. 

8. Collaboration & Agile Development: 

• Work closely with frontend developers, product managers, and QA engineers. 

• Participate in Agile ceremonies like daily stand-ups, sprint planning, and retrospectives.