Senior Software Engineer, ClickHouse
Data Integration & Java Virtual Machine Ecosystem
+ Equity
Open-source database for real-time apps and analytics
Be an early applicant
Open-source database for real-time apps and analytics
201-500 employees
Be an early applicant
+ Equity
201-500 employees
Company mission
To allow users to generate analytical reports using SQL queries in real-time.
Role
Who you are
- 6+ years of software development experience focusing on building and delivering high-quality, data-intensive solutions
- 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
- Strong understanding of database fundamentals: SQL, data modeling, query optimization, and familiarity with OLAP/analytical databases
- A track record of building scalable data integration systems (beyond simple ETL jobs)
- 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
- Outstanding written and verbal communication skills to collaborate effectively within the team and across engineering functions
- Understanding of JDBC, network protocols (TCP/IP, HTTP), and techniques for optimizing data throughput over the wire
- Passion for open-source development
Desirable
- 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
- 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
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.
It has seen substantial funding too, the most recent of which is cited to help advance its platform across multiple use cases. Alongside this funding, it recently announced the acquisition of LibreChat, an open-source AI chat platform, allowing ClickHouse to launch its Agentic Data Stack. This move positions the company at the forefront of agentic analytics, allowing organizations to interact with massive datasets through AI agents, and demonstrates ClickHouses's commitment to shaping the future of real-time,. intelligent data analysis.
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 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
Company HQ
Old Palo Alto, Palo Alto, CA
Leadership
Aaron Katz
(Co-Founder & CEO)Prior to ClickHouse, Aaron spent 6 years at Elastic as CRO and Strategic Advisor. He also spent 12 years at salesforce, joining as a Regional VP of Sales before working through various roles to become the Senior VP of Enterprise Sales.
Yury Izrailevsky
(Co-Founder & President)Previously, Yury spent 3 years at Google as a VP of Engineering, 8 years at Netflix as a Director of Cloud and Systems Infrastructure and VP of CLoud Computing and Platform Engineering, and 8 years at Yahoo! as a Manager of Yahoo Data Warehouse and Director of Engineering.
Alexey Milovidov
(Co-Founder & CTO)Prior to becoming CTO in 2021, Alexey was the Head of CLickHouse and Yandex for over 13 years.
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