Core Software Engineer
Develop and optimize the core ClickHouse database, focusing on distributed systems performance, query execution, testing, and production debugging. The role requires strong C++ and Linux experience, database internals knowledge, and collaboration with engineering and open-source communities.
About the job
Responsibilities
- Contribute to, analyze, and optimize the performance of the core ClickHouse database.
- Work on query optimization, distributed query optimization, relational operators such as aggregation and joins, caching, and low-level optimizations including SIMD instructions.
- Extend existing and add new performance tests using real-world and synthetic datasets.
- Support advanced customer performance debugging, including participation in an on-call rotation and external community support channels.
- Collaborate with other engineering teams to assess the performance and reliability impact of new features.
- Resolve issues, review and complete pull requests, and answer questions from the open-source community.
Requirements
- Solid professional software development experience in C++.
- Experience with Unix/Linux systems.
- Strong knowledge of database internals and design.
- Experience in performance engineering, ideally with databases or comparable high-performance systems.
- Strong communication, collaboration, problem-solving, and production debugging skills.
- Willingness to engage with open-source communities and participate carefully in code reviews.
- Passion for efficiency, availability, scalability, and data governance.
Nice-to-haves
- ClickHouse experience.
- Experience with security, privacy, and compliance.
- TCP/IP and network programming.
- Cloud infrastructure services, preferably Kubernetes.
- Public technical conference or meetup speaking experience.
- Contributions to open-source projects.
Compensation and Benefits
- Equity through company stock options.
- Healthcare contributions.
- Flexible time off in the United States and generous entitlement in other countries.
- USD $500 home-office setup allowance for remote employees.
- Opportunities to attend company-wide offsites.
Skills
C++, Unix/Linux, Database Internals, Performance Engineering, Distributed Systems, Query Optimization, Simd, TCP/IP, Network Programming, Kubernetes, Cloud Infrastructure, Production Debugging
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