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

NOTE: this role can be located anywhere ClickHouse has a hiring presence.ClickHouse — Core Analytics DatabaseAbout 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 teamWhat 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 mindsetPerksFlexible work environment - ClickHouse is a globally distribut