During September 2025, Mavitha Shehar developed a Vehicle Review and Rating System with User Authentication for the MavithaShehar/pickn-go-backend repository. She designed and implemented end-to-end CRUD operations for vehicle reviews, ensuring that only authenticated users could create, update, or delete feedback on vehicles they had booked. Leveraging Express.js and Node.js for backend logic and MongoDB for data persistence, she introduced authentication middleware and robust input validation to maintain security and data integrity. This work enabled secure, actionable user feedback after bookings, providing valuable insights for product decisions. The project demonstrated focused backend engineering within a one-month development period.