Roopireddy Manish Kumar

Serenus Technologies Solutions Pvt Ltd

Feb 2025 - Feb 2026 • 1 yrs

Built and maintained 15+ REST APIs using Spring Boot to manage business profiles, product catalogs, and customer transactions, supporting 500+ active users on the platform. Improved application performance by optimizing SQL queries and database indexes, which reduced server load and sped up API response times by around 25%. Refactored several legacy modules using object-oriented design principles, making the codebase easier to maintain and helping reduce production bugs by 30%. Worked with Spring Data JPA and Hibernate to handle ORM mapping and ensure smooth data operations across MySQL and PostgreSQL databases. Diagnosed and resolved 50+ production issues across Dev, UAT, and Production environments, significantly improving the team's response and resolution time. Implemented better logging and debugging practices, helping increase overall system stability and maintain ~99% uptime. Collaborated closely with QA engineers and frontend teams during Agile sprints to ensure features were delivered on time in most release cycles. Used Git for version control and branch management, following structured code reviews to keep the codebase stable and minimize merge conflicts.

Amazon

Nov 2023 - Nov 2024 • 1 yrs

Reviewed and analyzed 1,000+ high-value transactions each week to identify unusual patterns, flag suspicious activity, and help prevent potential financial risks. Improved investigation accuracy by around 20% by applying structured data checks and using analytical approaches to validate transaction behavior. Managed investigations and escalations while maintaining 98% SLA compliance, ensuring cases were resolved within strict timelines. Developed a strong analytical and problem-solving approach by digging into transaction data, identifying root causes, and resolving complex risk cases efficiently.