Senior Software Engineer (Java Streaming, Connectors)

Join ClickHouse, a leading open-source columnar database management system. As a Senior Software Engineer, you'll be a core contributor to ClickHouse's Data engineering ecosystem, owning and maintaining critical parts of the platform. You'll work at the intersection of high-performance database engineering and developer experience, crafting tools that enable Data Engineers to harness ClickHouse's incredible speed and scale. Your work will directly impact how companies process massive datasets, and you'll collaborate closely with the open-source community, internal teams, and enterprise users. Enjoy a flexible work environment, healthcare benefits, equity in the company, and opportunities for global gatherings.

• Contribuer de manière significative à l'écosystème d'ingénierie des données de ClickHouse en possédant et en maintenant des parties critiques.
• Gérer l'ensemble du cycle de vie des intégrations de frameworks de données, du pilote de base de données aux SDK et connecteurs.
• Collaborer étroitement avec la communauté open-source, les équipes internes et les utilisateurs d'entreprise pour garantir que nos intégrations JVM établissent la norme en matière de performance.
• Understanding of JDBC, network protocols (TCP/IP, HTTP), and techniques for optimizing data throughput over the wire
• Experience developing or extending connectors, sinks, or sources for at least one streaming processing framework such as Apache Flink, Beam, or Kafka Connect, with preference for experience building or maintaining production-grade streaming connectors
• Outstanding written and verbal communication skills to collaborate effectively within the team and across engineering functions
• Proven experience with the internals of streaming or data integration frameworks, with strong preference for Apache Kafka (or similar pub/sub systems), Kafka Connect, Apache Flink or Apache Beam
• Solid experience with concurrent programming in Java, including threads, executors, and reactive or asynchronous patterns
• Strong proficiency in Java and the JVM ecosystem, including deep knowledge of memory management, garbage collection tuning, and performance profiling
• Hands-on experience with Apache Kafka or similar distributed messaging systems (e.g., Pulsar, Kinesis), including topic design, consumer groups, and performance tuning
• Passion for open-source development
• Strong understanding of database fundamentals: SQL, data modeling, query optimization, and familiarity with OLAP/analytical databases
• 6+ years of software development experience focusing on building and delivering high-quality, data-intensive solutions
• A track record of building scalable data integration systems (beyond simple ETL jobs)
• Prior contributions to open-source projects: actively engaging with the OSS community, advocating for users, and influencing the evolution of the core system through your contributions - big advantage
• Familiarity with ClickHouse or similar high-performance data platforms
• Working knowledge of Python, especially in data engineering contexts (e.g., Pandas, PySpark, Airflow), and ability to contribute to Python tooling when needed