Requirements
• We’re looking for a Principal Engineer with deep expertise in systems programming and database internals — particularly Postgres — to help us push boundaries in how databases are built and operated at scale
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• 10+ years of experience building systems software in C/C++ or Rust (Go experience a plus)
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• Deep knowledge of PostgreSQL or other database engine internals, including storage, execution, or replication subsystems
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• Strong understanding of concurrency, operating systems, and performance engineering
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• Proven ability to ship large-scale systems or core infrastructure features end-to-end
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• Experience contributing to open-source databases or similar complex systems is highly desirable
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• Pragmatic problem solver with a bias for simplicity and measurable impact
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• Thrives in a high-autonomy, high-velocity environment
What the job involves
• ClickHouse is expanding its capabilities in the database systems domain, building next-generation infrastructure that redefines performance, scalability, and developer experience
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• This is a strategic and high-impact role for an engineer who can work independently across complex technical areas: from storage and performance optimization to distributed coordination and extension development
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• You’ll shape critical components of our data platform, mentor other engineers, and drive architectural direction for systems that serve massive workloads
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• Lead design and implementation of advanced systems features across areas like storage, replication, query execution, and performance optimization
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• Contribute to and extend Postgres internals — improving reliability, scalability, and efficiency
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• Prototype and build extensions that expand Postgres’s core capabilities and integrate with cloud-native infrastructure
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• Collaborate with product, infrastructure, and cloud platform teams to deliver robust, developer-friendly experiences
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• Profile and optimize database performance using low-level instrumentation and benchmarking
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• Provide technical leadership, set standards for engineering excellence, and mentor senior engineers
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• Operate with significant autonomy and ownership — driving projects from concept to production
