VAMIKA SINGH

I build Spring Boot REST APIs end to end, including full CRUD across service and repository layers, and I keep the models practical based on what clients need.

For my freelance work, I designed JPA entities with OneToMany and ManyToOne relationships, used Spring Data JPA for database operations, and applied Java Streams for filtering and mapping response DTOs.

I also implemented JWT authentication with Spring Security—password hashing and role-based access control—then documented and tested endpoints in Postman and handed off shared collections for independent verification.

Before that, at Tata Consultancy Services (TCS) in Bengaluru, I wrote Java backend logic for ServiceNow business rules and scheduled jobs, integrated REST APIs into ServiceNow workflows, and worked within Agile sprints.