1. Designed and developed a new RESTful API for the skill assessment platform, improving the overall performance and scalability of the application.2. Implemented a secure authentication and authorization system, ensuring that only authorized users had access to sensitive data.3. Improved the application's data storage and retrieval performance by optimizing database schema and queries, reducing latency, and improving overall user experience.4. Worked closely with the front-end developers to ensure seamless integration of new features and functionality into the platform.5. Contributed to the development of a comprehensive documentation system, ensuring that all code and processes were well-documented and easily accessible to other developers.