{"id":583643,"url":"https://alion.io/job/clickhouse-dev-core-software-engineer-c-remote-2","title":"Core Software Engineer (C++) - Remote","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":null,"employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":["US","CA"],"hiring_countries_total":2,"salary":{"min":195000,"max":260000,"currency":"USD","period":"year","gross":null,"usd_annual":260000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"C++","optional":false},{"name":"ClickHouse","optional":false},{"name":"GitHub","optional":false},{"name":"Linux","optional":false},{"name":"Slack","optional":false},{"name":"Unix","optional":false},{"name":"Kubernetes","optional":true},{"name":"TCP/IP","optional":true}],"status":"live","first_seen_at":"2026-01-16T17:54:25Z","employer_posted_date":"2026-01-16","last_verified_at":"2026-11-05T11:08:11Z","board_verified":true,"closed_at":null,"days_open":292,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":292},"description":"NOTE: this role can be anywhere in the United States or Canada as the position is not office-based.\nWith over 49,000 stars onGitHub, ClickHouse is the fastest and most resource efficient open-source database for real-time apps and analytics. Our Core Engineering teams own the heart of our ClickHouse Open Source project. We are looking for exceptional C++ engineers to join our remote-first, global team and continue to scale and grow both our open source and ClickHouse Cloud offerings. More specifically, we are seeking engineers who love scaling and optimizing the performance of highly distributed systems.\nWhat will you do?\nAs part of the ClickHouse Core teams, you will contribute to, analyze, and optimize the performance of the core ClickHouse database. The team works on many different topics such as query optimization, distributed query optimization, relational operators (e.g. aggregation and joins), caching, and low-level optimizations like SIMD instructions.\n\nYou will ensure that the database performance does not deteriorate over time by extending existing and adding new performance tests, based on real-world or synthetic datasets.\n\nYou will serve as a resource for the Support Engineering team, helping to debug the most advanced performance issues encountered by our customers. This includes an on call rotation as well as participation in our external community support channels.\n\nAs the core ClickHouse database continues to move at a fast pace, you will closely collaborate with our other teams to assess the impact of new features on performance and reliability\n\nYou will work with our open-source community. This will include resolving issues, reviewing and finishing PRs, answering questions from mail, chats, google groups, external Slack channels, etc.\n\nAbout you:\nYou bring along solid professional software development experience in C++. This includes experience with Unix/Linux Systems.\n\nYou have strong knowledge in database internals and design.\n\nYou have experience in performance engineering, ideally in a database but other areas like high-frequency trading, simulation, real time data processing etc. are also okay.\n\nYou communicate well with others and have the ability to work well within and across engineering teams.\n\nYou are ready to work closely with our open-source community. You participate in code reviews with patience and attention-to-detail fostering a culture of collaboration and mutual respect.\n\nYou are a strong problem-solver and have solid production debugging skills.\n\nYou are passionate about efficiency, availability, scalability and data governance.\n\nYou thrive in a fast-paced start-up environment, seeing yourself as a partner with the business with the shared goal of moving forward and building together.\n\nYou have a high level of responsibility, ownership, and accountability.\n\nBonus points for:\nExperience with ClickHouse.\n\nExperience in security, privacy, and compliance.\n\nExperience with TCP/IP and network programming.\n\nExperience developing cloud infrastructure services, preferably with Kubernetes.\n\nExperience giving public talks at technical conferences and meetups.\n\nPrevious contributions to open source projects.\n\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":4547,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Flexible schedule","Flexible time off","Home office","Stock options"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"},{"name":"Canada","iso":"CA","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Data Warehouses & Lakehouses","Databases & DBMS"],"lifecycle":[{"event":"open","at":"2026-09-10T00:51:39Z"},{"event":"open","at":"2026-09-25T15:13:37Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 8 · green card filings: 1","filings_12m":8,"filings_prev_12m":7,"green_card_filings_12m":1,"median_offered_wage_usd":204167,"route":null,"cap_exempt":false,"checked_at":"2026-10-29T16:27:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":4}],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.269,"p_room":0.28,"age_days":292,"expected_fill_days":67,"reasons":["conf:4","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-11-05T05:54:30Z"},"pay":{"stated_usd_annual":260000,"is_top_pay":true},"html_url":"https://alion.io/job/clickhouse-dev-core-software-engineer-c-remote-2","json_url":"https://alion.io/job/clickhouse-dev-core-software-engineer-c-remote-2.json","meta":{"generated_at":"2026-11-05T14:37:37Z","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":18949,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-06T00:00:00Z"}},"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-dev-core-software-engineer-c-remote-2"},{"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-dev-core-software-engineer-c-remote-2"},{"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-dev-core-software-engineer-c-remote-2"},{"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-dev-core-software-engineer-c-remote-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fclickhouse-dev-core-software-engineer-c-remote-2"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":583643}},{"tool":"search_jobs","arguments":{"company":"clickhouse.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":583643},"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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