Senior Java Engineer, ClickHouse
Integrations
$121.5-232k
Salary varies depending on location + Stock Options
Open-source database for real-time apps and analytics
Be an early applicant
Open-source database for real-time apps and analytics
101-200 employees
Be an early applicant
$121.5-232k
Salary varies depending on location + Stock Options
101-200 employees
Company mission
ClickHouse's mission is to allow users to generate analytical reports using SQL queries in real-time.
Role
Who you are
- 5+ 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
- Solid experience with concurrent programming in Java, including threads, executors, and reactive or asynchronous patterns
- Experience developing, extending, or working with connectors, sinks, or sources for at least one big data processing framework such as Apache Spark, Flink, Beam, or Kafka Connect
- Strong understanding of database fundamentals: SQL, data modeling, query optimization, and familiarity with OLAP/analytical databases
- Outstanding written and verbal communication skills to collaborate effectively within the team and across engineering functions
- Passion for open-source development: actively engaging with the OSS community, advocating for users, and influencing the evolution of the core system through your contributions
Desirable
- Prior contributions to open-source projects
- Familiarity with ClickHouse or similar high-performance data platforms
- Expertise in building sinks or source connectors for big data frameworks
- Working knowledge of Python, especially in data engineering contexts (e.g., Pandas, PySpark, Airflow), and ability to contribute to Python tooling when needed
- Understanding of JDBC, network protocols (TCP/IP, HTTP), and techniques for optimizing data throughput over the wire
What the job involves
- As a Senior Software Engineer specializing in JVM-based frameworks, you'll serve as a core contributor, owning and maintaining critical parts of ClickHouse's Data engineering ecosystem
- This role sits at the intersection of high-performance database engineering and developer experience, where you'll craft tools that enable Data Engineers to harness ClickHouse's incredible speed and scale
- You'll own the full lifecycle of data framework integrations—from the core database driver that handles billions of records per second, to SDKs and connectors that make ClickHouse feel native in JVM-based applications
- This isn't just about writing code; you're building the foundation that thousands of Data engineers rely on for their most critical data workloads
- Your work will directly impact how companies process massive datasets, from real-time analytics platforms ingesting millions of events per second to observability systems monitoring global infrastructure
- You'll collaborate closely with the open-source community, internal teams, and enterprise users to ensure our JVM integrations set the standard for performance, reliability, and developer experience
Our take
Database management systems have long been important to the operations of businesses. However, these systems can be painfully slow. ClickHouse solves this problem with its ultra-fast database management system, that powers real-time analytics and apps.
ClickHouse's founding team hail from companies including Yahoo!, Netflix, Salesforce and Google. This has not only lent the company an impressive amount of credibility, but has also allowed it to identify the needs and challenges of enterprises when it comes to their databases. Its system works between 100 and 1,000 times faster than traditional options, and has led to the company being trusted by the likes of eBay, Uber and Spotify.
Valued at $1 billion back in 2021, it is clear that ClickHouse holds a strong position in the market, though it does face competition from rivals such as StarTree and Imply. It has seen substantial funding, the most recent of which is cited to help expand its product and engineering teams. In 2022, the company also launched ClickHouse Cloud - a fully managed, SOC 2 Type 2-compliant cloud-hosted version of its database that is now available in the AWS Marketplace.
Freddie
Company Specialist at Welcome to the Jungle
Company
Funding (last 2 of 3 rounds)
May 2025
$350m
SERIES C
Nov 2021
$250m
SERIES B
Total funding: $650m
Company benefits
- Flexible work environment - ClickHouse is a distributed company offering both office based and remote work options (your choice!). We do not check when you log in or out. You are the owner of your calendar because work-life balance is important to us
- Employer contributions towards your healthcare
- Equity - Any new team member who joins our company is eligible to receive stock options
- Our competitive time-off policy complies with all local country laws at a minimum of given time off + all paid bank holidays
- Home office setup allowance for our remote employees
Company HQ
Old Palo Alto, Palo Alto, CA
Leadership
Aaron Katz
(CEO)Previously worked as a Consultant at PeopleSoft, and was SVP of Enterprise Sales at salesforce.com. Was also CRO of Elastic.
Yury Izrailevsky
(President, Product & Technology)Was Director of Engineering for Yahoo!'s Search Engine Core. Worked as VP of Cloud Computing at Netflix, and then joined Google as VP of Engineering.
Alexey Milovidov
(CTO)Was previously Head of ClickHouse at Yandex.
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