Senior Software Engineer

Summary

Join ClickHouse's Core Engineering team as a C++ engineer to develop features for the chDB core engine, focusing on performance optimization, object serialization, and DataFrame operations. Design and implement language bindings for various programming languages, collaborating with integration teams to ensure seamless compatibility. Improve chDB's robustness through comprehensive testing and serve as a technical resource for the multi-language community. Work with the open-source community, resolving issues and reviewing PRs. This role requires strong C++ development experience, Unix systems and cross-platform development experience, and familiarity with multiple programming languages.

Requirements

• Strong professional software development experience in C++
• Experience with Unix systems and cross-platform development
• Experience in one or more: high-performance computing, in-memory databases, data processing engines, concurrency, and multithreading
• Experience developing language bindings or FFI (Foreign Function Interface) implementations
• Familiarity with multiple programming languages, particularly Python, Go, Java, Node.js, or Rust
• Strong communication skills and ability to work effectively within and across engineering teams; some professional working proficiency with English is required
• Experience with data processing frameworks and SQL engines
• You're passionate about building developer tools and improving cross-language interoperability
• You thrive in a fast-paced environment and can balance technical excellence with practical solutions
• You have a high level of ownership and accountability, with a focus on delivering reliable, performant code

Responsibilities

• Develop features for the chDB core engine in C++, working on areas like performance optimization, object serialization, and DataFrame operations
• Design and implement language bindings for various programming languages
• Closely collaborate with our integration teams to ensure seamless compatibility across language ecosystems, particularly with data science tools and frameworks
• Improve the robustness of chDB through comprehensive testing across different language bindings
• Serve as a technical resource for the multi-language community, helping debug advanced issues and optimize performance
• Work with our open-source community, including resolving issues, reviewing PRs, and providing guidance through various communication channels

Preferred Qualifications

• Experience with database internals and query optimization
• Familiarity with package management and build systems across different languages
• Experience with data formats like Parquet, Avro, and Arrow
• Contributions to cross-language tools or related open source projects
• Experience optimizing performance for large-scale data operations
• Background in developing APIs and creating developer documentation
• Knowledge of WebAssembly and cross-platform compilation

Benefits

• Flexible work environment - ClickHouse is a globally distributed company and remote-friendly. We currently operate in 20 countries
• Healthcare - Employer contributions towards your healthcare
• Equity in the company - Every new team member who joins our company receives stock options
• Time off - Flexible time off in the US, generous entitlement in other countries
• A $500 Home office setup if you’re a remote employee
• Global Gatherings – We believe in the power of in-person connection and offer opportunities to engage with colleagues at company-wide offsites