May 2025 – Jul 2025 · 2 mos · Bengaluru, Karnataka, India · On-site

• Contributed to the Kindle Content Versioning team, ensuring seamless transitions between revisions of Kindle books by mapping annotations, audiobook sync, and X-Ray data.
• Designed and developed a full-stack single-page application (SPA) consolidating multiple debugging tools used daily by 15+ Kindle engineers, reducing on-call resolution time by 80%.
• Automated key debugging workflows, including:
• Querying user-specific data in DynamoDB to validate issues and update tickets, cutting task time from 5–10 minutes to under 30 seconds.
• Instant visualization of content alignment between book revisions by processing complex `.posi` JSON files.
• Streamlining customer data updates (MYCD) through a simple UI invoking backend services with a single click.
• Built the frontend in React and backend using a Java-based framework, deployed as AWS Lambda functions behind an API Gateway.
• Worked extensively with AWS services — IAM (access control), CloudWatch (monitoring), DynamoDB (data), S3 (assets), and CDK (infrastructure as code).
• Addressed challenges like API design, IAM policy management, dependency resolution, and test automation to ensure production-grade reliability.
• Owned end-to-end development and production deployment of multiple tools, with comprehensive documentation for future maintainers.