{"id":2015293,"url":"https://alion.io/job/nextdoor-senior-data-scientist-search","title":"Senior Data Scientist (Search)","company":{"id":1767001,"name":"Next Door","domain":"nextdoor.co.uk","url":"https://alion.io/company/nextdoor-co-uk","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":{"grade":"B","score":75,"open_postings":3,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-14T06:34:16Z"}},"role":"Data Science","role_family":"Data Science","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["United States"],"countries":["US"],"hiring_countries":["US"],"hiring_countries_total":1,"salary":{"min":175000,"max":234000,"currency":"USD","period":"year","gross":null,"usd_annual":234000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"A/B Testing","optional":false},{"name":"NumPy","optional":false},{"name":"Python","optional":false},{"name":"RAG","optional":false},{"name":"Scikit-learn","optional":false},{"name":"SQL","optional":false}],"status":"live","first_seen_at":"2026-05-25T00:09:25Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-14T10:13:34Z","board_verified":true,"closed_at":null,"days_open":142,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":142},"description":"Join Nextdoor as a Senior Data Scientist on the Search team, where you will shape the way neighbors find the people, places, posts, and businesses that matter to them. You will own the data science behind query understanding, content retrieval, ranking, and the end-to-end search experience. This role requires a combination of analytical and technical skills, as well as a passion for shipping impactful solutions.\nMissions\nConcevoir et développer des algorithmes et des modèles pour optimiser la pertinence de la recherche, la récupération et le classement.\nCollaborer avec des équipes interfonctionnelles pour soutenir les efforts de développement de produits, y compris le produit, le design, l'ingénierie, le marketing et les opérations.\nDévelopper et partager des informations stratégiques clés grâce à l'analyse des données, y compris la conception d'expériences et l'évaluation des performances.\nProfil recherché\n - Strong working knowledge of experimentation, including designing and analyzing complex product A/B testing results, with fluency in handling interaction effects and long-term metric movement- Expert knowledge of SQL and Python, including common scientific computing packages and data science tools such as numpy, pandas, and scikit-learn\n- Direct experience working on a Search, recommendations, or information retrieval product - familiarity with the core problems (query understanding, retrieval, ranking, relevance evaluation) and the metrics used to measure them\n- Working knowledge of ML models and - more importantly - the judgment to apply them to real business problems and to devise the right metrics for evaluating algorithms and ranking systems\n- Excellent communication skills, with the ability to synthesize, simplify, and explain complex problems to different types of audiences, including executives, and compile compelling narratives\n- 5+ years of relevant Data Science experience\n- Innate curiosity around finding meaningful insights that inform how we think about and develop our product and business strategies\n- Experience working with ranking algorithms for unstructured content\n- Experience designing, deploying, or monitoring ML production models\n- Basic understanding of how to build RAG systems","description_format":"text","description_chars":2243,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-07T13:09:55Z"}],"visa":[],"liveness":{"score":7,"band":"cold","label":"Long shot","p_open":1,"p_active":0.254,"p_room":0.28,"age_days":142,"expected_fill_days":29,"reasons":["conf:1","velocity","win:tail","crowd:"],"computed_at":"2026-10-14T06:34:16Z"},"pay":{"stated_usd_annual":234000,"is_top_pay":true},"html_url":"https://alion.io/job/nextdoor-senior-data-scientist-search","json_url":"https://alion.io/job/nextdoor-senior-data-scientist-search.json","meta":{"generated_at":"2026-10-14T12:58:18Z","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":15863,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-15T00:00:00Z"}},"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":1767001},"rest":"https://alion.io/mcp/rest/get_company?id=1767001"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fnextdoor-senior-data-scientist-search"},{"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%2Fnextdoor-senior-data-scientist-search"},{"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%2Fnextdoor-senior-data-scientist-search"},{"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/nextdoor-senior-data-scientist-search\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fnextdoor-senior-data-scientist-search"}]}