Senior Software Engineer

About the role

Join ClickHouse, a leading open-source columnar database management system, as a Senior Software Engineer. In this role, you will be a core contributor to ClickHouse's Data engineering ecosystem, owning and maintaining critical parts of the system. You will 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 will collaborate closely with the open-source community, internal teams, and enterprise users. Key missions: Contribuer de manière significative à l'écosystème d'ingénierie des données de ClickHouse en possédant et en maintenant des parties critiques.. Développer et étendre les intégrations de frameworks de données, y compris le pilote de base de données et les SDKs, pour améliorer l'expérience des développeurs.. Collaborer avec la communauté open-source, les équipes internes et les utilisateurs d'entreprise pour garantir que les intégrations JVM établissent la norme en matière de performance et de fiabilité. Profile: - Strong understanding of database fundamentals: SQL, data modeling, query optimization, and familiarity with OLAP/analytical databases - Proven experience with the internals of at least one of the following technologies: Apache Spark, Apache Flink, Kafka Connect, or Apache Beam - Experience developing or extending connectors, sinks, or sources for at least one big data processing framework such as Apache Spark, Flink, Beam, or Kafka Connect - 6+ years of software development experience focusing on building and delivering high-quality, data-intensive solutions - Strong proficiency in Java and the JVM ecosystem, including deep knowledge of memory management, garbage collection tuning, and performance profiling - Outstanding written and verbal communication skills to collaborate effectively within the team and across engineering functions - Passion for open-source development - Understanding of JDBC, network protocols (TCP/IP, HTTP), and techniques for optimizing data throughput over the wire - A track record of building scalable data integration systems (beyond simple ETL jobs) - Solid experience with concurrent programming in Java, including threads, executors, and reactive or asynchronous patterns - Familiarity with ClickHouse or similar high-performance data platforms - 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 - Working knowledge of Python, especially in data engineering contexts (e.g., Pandas, PySpark, Airflow), and ability to contribute to Python tooling when needed