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ClickHouse Logo ClickHouse · IT - Software Development

Software Engineer (C++) - chDB

China · Job Posted December 07, 2025
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Job Description

The Core Engineering team for chDB is responsible for developing our high-performance in-process SQL engine, powered by ClickHouse, while working cross-functionally to enhance multi-language ecosystem integration. We're looking for a highly proficient C++ engineer who will work on our core engine and help expand our language binding capabilities across Python, Go, Ruby, Java, NodeJS, Bun, Rust, and R ecosystems.

Job Responsibility

  • 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

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

Nice to have

  • 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

What we offer

  • 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
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