{"id":990276,"url":"https://alion.io/job/clickhouse-principal-database-performance-engineer-core-engineering-c","title":"Principal Database Performance Engineer - Core Engineering (C++)","company":{"id":3448,"name":"ClickHouse","domain":"clickhouse.com","url":"https://alion.io/company/clickhouse","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":79,"open_postings":45,"ghost_share":0,"stale_share":0.644,"repost_share":0,"time_to_fill_p50_days":67,"computed_at":"2026-11-05T05:54:30Z"}},"role":"Backend","role_family":"Backend","seniority":"lead","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["DE","GB","NL","ES"],"hiring_countries_total":4,"salary":null,"salary_estimate":{"min_usd":112000,"max_usd":225000,"period":"year","method":"role_seniority_country_cell","sample_n":8},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"C++","optional":false},{"name":"ClickHouse","optional":false}],"status":"live","first_seen_at":"2026-09-17T00:20:07Z","employer_posted_date":"2026-09-17","last_verified_at":"2026-11-05T21:24:07Z","board_verified":true,"closed_at":null,"days_open":50,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":50},"description":"NOTE: this role can be located anywhere ClickHouse has a hiring presence.\nClickHouse - Core Analytics Database\nAbout the Role:\nClickHouse is looking for a Principal Database Performance Engineer to join the team behind our high-performance analytics database service.\nIn 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.\nOur performance team owns the core of query execution - filters, aggregation, joins, and the index structures that make them fast.\nWe'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.\nWhat you will do:\n- Identify impactful performance and scalability opportunities in customer or benchmark workloads\n- Architect and implement optimized database algorithms and data structures across core relational operators, indexes, query processing, memory management and scheduling\n- Drive the performance roadmap for latency, throughput, memory efficiency and hardware utilization improvements\n- Participate in the development of a complex, high-performance database system, including meticulous testing and safe production rollout\n- Represent the company externally through presentations, blog posts, and community contributions\n- Mentor and support junior engineers on the team\nWhat You'll Bring\n- 5+ years of experience in database performance engineering, distributed systems\n- Master or PhD in databases or a related field\n- Strong fluency in C++ and a background in performance-critical software or systems programming\n- A track record of driving complex performance improvements end-to-end\n- Deep understanding of computer science fundamentals, data structures, and algorithms\n- Excellent communication and leadership skills, with a proactive, goal-driven mindset\nPerks\nFlexible work environment - ClickHouse is a globally distributed company and remote-friendly. We currently operate in over 25 countries.\n\nHealthcare - Employer contributions towards your healthcare.\n\nEquity in the company - Every new team member who joins our company receives stock options.\n\nTime off - Flexible time off in the US, generous entitlement in other countries.\n\nA USD$500 Home office setup if you’re a remote employee.\n\nGlobal Gatherings - We believe in the power of in-person connection and offer opportunities to engage with colleagues at company-wide offsites.\n\nCulture - We All Shape It\nAs part of a rapidly scaling start-up, you will be instrumental in shaping our culture.\nAre you interested in finding out more about our culture? Learn more about our values here. Check out ourblog posts or follow us on LinkedIn to find out more about what’s happening at ClickHouse.\nEqual Opportunity & Privacy\nClickHouse 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.\nPlease see here for our Privacy Statement.","description_format":"text","description_chars":3309,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"phd","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity","Flexible schedule","Flexible time off","Home office","Stock options"],"hiring_locations":[{"name":"Germany","iso":"DE","kind":"country"},{"name":"United Kingdom","iso":"GB","kind":"country"},{"name":"Netherlands","iso":"NL","kind":"country"},{"name":"Spain","iso":"ES","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Data Warehouses & Lakehouses","Databases & DBMS"],"lifecycle":[{"event":"open","at":"2026-09-17T02:06:46Z"}],"visa":[],"liveness":{"score":36,"band":"fade","label":"Fading","p_open":1,"p_active":0.595,"p_room":0.6,"age_days":49,"expected_fill_days":67,"reasons":["conf:4","stale_co","velocity","win:late","crowd:brand"],"computed_at":"2026-11-05T05:54:30Z"},"pay":null,"html_url":"https://alion.io/job/clickhouse-principal-database-performance-engineer-core-engineering-c","json_url":"https://alion.io/job/clickhouse-principal-database-performance-engineer-core-engineering-c.json","meta":{"generated_at":"2026-11-06T01:28:49Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":2430,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-07T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3448},"rest":"https://alion.io/mcp/rest/get_company?id=3448"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fclickhouse-principal-database-performance-engineer-core-engineering-c"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fclickhouse-principal-database-performance-engineer-core-engineering-c"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fclickhouse-principal-database-performance-engineer-core-engineering-c"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/clickhouse-principal-database-performance-engineer-core-engineering-c\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fclickhouse-principal-database-performance-engineer-core-engineering-c"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":990276}},{"tool":"search_jobs","arguments":{"company":"clickhouse.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":990276},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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