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ClickhouseClickhouseUnited States

Senior Software Engineer - Data Integration & JVM Ecosystem

Senior Software Engineer owning JVM-based data integrations and connectors for ClickHouse. Requires 6+ years experience building scalable data systems with deep Java/JVM expertise and experience extending frameworks like Spark, Flink, or Kafka Connect.

126k – 232k/yr
Remote6+ YOEData Engineering

About the role

Responsibilities

  • Own the full lifecycle of data framework integrations for ClickHouse's JVM ecosystem
  • Build and maintain the core database driver handling billions of records per second
  • Develop SDKs and connectors that make ClickHouse feel native in JVM-based applications
  • Create and extend connectors, sinks, or sources for big data processing frameworks (Apache Spark, Flink, Beam, Kafka Connect)
  • Collaborate with open-source community, internal teams, and enterprise users on JVM integrations
  • Optimize data throughput over the wire using JDBC, network protocols (TCP/IP, HTTP)

Requirements

  • 6+ years of software development experience focusing on high-quality, data-intensive solutions
  • Proven experience with internals of Apache Spark, Apache Flink, Kafka Connect, or Apache Beam
  • Experience developing or extending connectors, sinks, or sources for big data frameworks
  • Strong understanding of database fundamentals: SQL, data modeling, query optimization, OLAP/analytical databases
  • Track record of building scalable data integration systems (beyond simple ETL)
  • Strong proficiency in Java and JVM ecosystem including memory management, GC tuning, performance profiling
  • Solid experience with concurrent programming in Java (threads, executors, reactive/asynchronous patterns)
  • Understanding of JDBC, network protocols (TCP/IP, HTTP), and data throughput optimization
  • Outstanding written and verbal communication skills
  • Passion for open-source development

Nice-to-Haves

  • Prior contributions to open-source projects and OSS community engagement
  • Familiarity with ClickHouse or similar high-performance data platforms
  • Working knowledge of Python (Pandas, PySpark, Airflow) and ability to contribute to Python tooling

Skills

JavaJvmSparkApache FlinkKafka ConnectApache BeamJdbcSQLConcurrent ProgrammingGarbage Collection Tuning

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