Sagar Ulli

Java Backend Developer with experience building RESTful APIs, payment integrations, and backend services using Java, Spring Boot, and MySQL. Strong foundation in OOP, MVC architecture, and microservices fundamentals. Seeking backend roles focused on building scalable and maintainable systems.

Java Developer Trainee - HulkHire Tech - Remote

(2025-08 - 2025-10)

• Designed a modular microservices architecture with validation, processing, and payment workflow services.
• Built a Stripe-based payment processing system using Spring Boot, handling request validation, transaction processing, and webhook-driven status updates.
• Implemented secure webhook validation, asynchronous event handling, and real-time transaction status updates.
• Developed REST APIs, tested using Postman, and documented endpoints with Swagger.
• Used MySQL for transaction persistence and service coordination.

Bachelor of Engineering - Computer Science - Atria Institute Of Technology (2020 - 2024)