Senior Staff Software Engineer - Query Execution

Responsibilities

• Build the execution engine
• Design, implement, test, and support query operators, expression evaluation, execution scheduling, runtime planning, and resource management.
• Improve runtime performance: Optimize vectorized processing, concurrency, parallelism, memory usage, data exchange, and disk spilling.
• Diagnose difficult problems: Investigate query correctness and performance issues using query profiles, profiling tools, telemetry, benchmarks, logs, and production data.
• Optimize Java and the JVM: Improve CPU utilization, allocation behavior, garbage collection, thread behavior, and other runtime characteristics.
• Collaborate across the query engine: Work with Query Planner, Datalake, Product
• Support, and field engineering teams on end-to-end query improvements.
• Use AI-assisted development tools: Apply AI tools to code comprehension, debugging, test generation, documentation, and incident analysis.
• Apply engineering judgment: Validate AI-generated code and recommendations through review, testing, benchmarking, and engineering judgment.
• Raise the engineering bar: Participate in design and code reviews, contribute to technical direction, and mentor other engineers.

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