Worked on the aws/serverless-java-container repository, focusing on backend development and security improvements using Java, Spring Boot, and AWS Lambda. Addressed a critical security concern by removing AWS environment variables from production logs, thereby reducing the risk of credential leakage and aligning with secure logging best practices. Additionally, delivered a targeted bug fix to ensure correct decoding of encoded query parameter keys and values for ALB-originated requests, preserving data integrity and compatibility within the serverless Java container. The work emphasized careful, incremental enhancements to security and data handling, maintaining runtime performance while improving the overall reliability and safety of the codebase.