Sr Software Engineer

The LRT group is responsible for the language layer and relational execution engine powering YugabyteDB. We care deeply about correctness, performance, and usability of the system we are building. We are always looking for innovative solutions to these challenges, be it from other industry applications, academic research or original contributions, as our team's work powers a broad range of components. The team's work areas include query planning and optimization, consistent online schema changes, as well as a broad set of SQL features including stored procedures, triggers, geo-partitioned tables, or GIN indexes for text search.

Roles and Responsibilities-

• Lead the design, implementation, and evolution of the distributed SQL query execution engine in YugabyteDB, ensuring correctness, efficiency, and horizontal scalability.
• Own and enhance execution-layer components including distributed scans, joins, aggregations, sorting, batching, parallel execution, RPC coordination, and runtime memory management.
• Optimize distributed execution paths by minimizing cross-node communication, reducing data movement, improving pushdown to storage layer, and enhancing execution pipelining.
• Improve runtime observability by enhancing execution metrics, tracing, profiling, and debugging capabilities to support production-grade workloads.
• Mentor engineers on distributed systems design principles, execution-engine architecture, and performance engineering best practices.
• Write high-quality C/C++ code with comprehensive unit, integration, and performance test coverage; actively participate in and drive high-quality code and design reviews.
• Collaborate cross-functionally with storage, transaction, and infrastructure teams to ensure execution-layer scalability as cluster sizes and transactional throughput grow.
• Contribute strategically to the roadmap and technical direction of YugabyteDB's distributed SQL execution subsystem and the broader ecosystem.

Required Experience-

• 5-8 years experience with compiled languages, e.g. C/C++.
• BS/MS/PhD in CS (or related field) or equivalent experience.
• Systems engineering fundamentals (e.g.: distributed systems, operating systems, databases) is a must.
• Experience with compiled languages, e.g. C/C++ (preferred), Java, Go, Rust.
• Knowledge of database internals, compilers, query planning/optimization is a plus.