USHA Ahirwar

• Designed and developed RESTful backend services using Java (Spring Boot) and Go.
• Implemented a microservices architecture to support scalable and high-volume financial transactions.
• Worked extensively on payment gateway integrations, including: PayU, Razorpay, PhonePe, and Cashfree.
• Implemented card tokenization workflows using Cashfree and PayU, ensuring secure and compliant handling of card data.
• Designed and maintained refund processing systems across multiple payment gateways, with proper status tracking and reconciliation.
• Developed middleware services for third-party API integrations, handling request validation, response mapping, retries, and error scenarios.
• Managed backend transactional data using SQL and NoSQL databases.
• Integrated Axis Bank payout APIs for fund transfers and settlement processing.
• Collaborated with QA, frontend, and product teams in an agile development environment.
• Improved system reliability through structured logging, standardized API responses, and better error handling.

Environment: Java, Spring Boot, Golang, REST APIs, Microservices, SQL, NoSQL, Docker, Git, Postman.