Clickhouse

Principal Database Performance Engineer - Core Engineering (C++)

Germany full-time Mid Salary not listed
full-time Mid level Technology & IT Curated
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About the role

NOTE: this role can be located anywhere ClickHouse has a hiring presence.
ClickHouse — Core Analytics Database

About the Role:
ClickHouse is looking for a Principal Database Performance Engineer to join the team behind our high-performance analytics database service.
In this role, you will drive performance and scalability improvements across the stack, taking on ambiguous, high-impact technical challenges most engineers never get to touch.
Our performance team owns the core of query execution - filters, aggregation, joins, and the index structures that make them fast.
We're looking for a sharp, passionate engineer who wants to own database performance end-to-end on a petabyte-scale cloud database, from initial analysis and implementation, through production rollout.

What you will do:
- Identify impactful performance and scalability opportunities in customer or benchmark workloads
- Architect and implement optimized database algorithms and data structures across core relational operators, indexes, query processing, memory management and scheduling
- Drive the performance roadmap for latency, throughput, memory efficiency and hardware utilization improvements
- Participate in the development of a complex, high-performance database system, including meticulous testing and safe production rollout
- Represent the company externally through presentations, blog posts, and community contributions
- Mentor and support junior engineers on the team

What You'll Bring
- 5+ years of experience in database performance engineering, distributed systems
- Master or PhD in databases or a related field
- Strong fluency in C++ and a background in performance-critical software or systems programming
- A track record of driving complex performance improvements end-to-end
- Deep understanding of computer science fundamentals, data structures, and algorithms
- Excellent communication and leadership skills, with a proactive, goal-driven mindset
Perks
Flexible work environment - ClickHouse is a globally distributed company and remote-friendly. We currently operate in over 25 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 USD$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.

Culture - We All Shape It
As part of a rapidly scaling start-up, you will be instrumental in shaping our culture.
Are you interested in finding out more about our culture? Learn more about our values here. Check out our blog posts or follow us on LinkedIn to find out more about what’s happening at ClickHouse.
Equal Opportunity & Privacy
ClickHouse provides equal employment opportunities to all employees and applicants and prohibits discrimination and harassment of any type based on factors such as race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.
Please see here for our Privacy Statement.
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Interview prep

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Mid
Technology & IT Data Analysis MySQL Remote Collaboration Principal Database Mid level

Likely questions

  1. Tell us about work you have done that is close to the Principal Database Performance Engineer - Core Engineering (C++) role.
  2. How would you approach your first 30 days at Clickhouse?
  3. Which of Data Analysis, MySQL and Remote Collaboration have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with Data Analysis, MySQL and Remote Collaboration.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Principal Database Performance Engineer - Core Engineering (C++) role because I can bring practical experience in Data Analysis, MySQL and Remote Collaboration, learn the team quickly, and contribute to the outcomes Clickhouse needs from this hire.

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