I work on Hadoop Distributed File System (HDFS) which provides high throughput access to big data:
• Design and implementation of new features (e.g. caller context, S3Guard)
• Bug fixes (a bug fix made Mover tool 10X faster) and performance enhancements
• Modernization and test improvement (e.g. split hdfs-client module for light dependency)
• Engineering support (we have 1K+ enterprise customers!)