During January 2026, this developer focused on backend reliability within the aws/aws-sdk-ruby repository, addressing a memory management issue in the ClockSkew retry plugin. By normalizing endpoint URIs in the retry logic, they resolved a memory leak that previously caused unbounded hash growth under high retry scenarios. This fix improved production stability for AWS SDK clients by ensuring consistent endpoint formatting and reducing memory usage. The work was implemented using Ruby and leveraged skills in API development and Ruby on Rails, demonstrating a methodical approach to diagnosing and resolving complex backend issues that impact large-scale system performance and reliability.