replication, high availability, query execution, InnoDB, backup, and recovery; MyRocks, RocksDB, or another LSM-based storage engine, including compaction, write amplification, caching, concurrency, and performance analysis. Strong production software engineering skills in Go and/or C++, including the ability to understand and modify large, mature systems codebases. Experience … debugging complex behavior through profiling, tracing, thread and process analysis, source‐code inspection, operating‐system telemetry, and controlled reproduction. Experience making high‐risk infrastructure changes safely through testing, staged rollout, observability, fault containment, and rollback. Clear technical judgment and the ability to communicate designs, trade‐offs, incidents, and operational ...