{"id":2014141,"url":"https://alion.io/job/roku-senior-machine-learning-engineer-search-2","title":"Senior Machine Learning Engineer (Search)","company":{"id":185188,"name":"Roku","domain":"roku.com","url":"https://alion.io/company/roku-2","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":{"grade":"A","score":90,"open_postings":17,"ghost_share":0,"stale_share":0.412,"repost_share":0,"time_to_fill_p50_days":46,"computed_at":"2026-10-12T06:55:09Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Jose, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":361300,"max":510000,"currency":"USD","period":"year","gross":null,"usd_annual":510000},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"bandit","optional":false},{"name":"Feature Store","optional":false},{"name":"Java","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"Recommender Systems","optional":false},{"name":"Reinforcement Learning","optional":false},{"name":"Scala","optional":false},{"name":"Spark","optional":false}],"status":"closed","first_seen_at":"2026-05-21T00:12:55Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-10T01:32:24Z","board_verified":false,"closed_at":"2026-10-10T01:32:24Z","days_open":142,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":140},"description":"Join Roku's Entertainment Assistant team as a Senior Machine Learning Engineer. In this role, you will lead the development of large-scale ML systems that optimize for multiple objectives, including user engagement, long-term retention, satisfaction, and monetization. You will drive innovation in conversational discovery, contextual recommendations, and personalized content experiences across the platform. The position requires strong technical leadership, product intuition, and the ability to balance user experience with business impact.\nMissions\nLead the development and deployment of large-scale machine learning models for ranking and personalization in Roku's entertainment assistant.\nDrive innovation in conversational discovery, contextual recommendations, and personalized content experiences across the platform.\nArchitect scalable machine learning systems, feature platforms, and data pipelines supporting rapid experimentation and long-term growth.\nProfil recherché\n - Strong technical leadership, system design, communication, and problem-solving skills- 8+ years of industry experience (or PhD with 5+ years) applying ML at scale in search, recommendation, ads, personalization, or related domains\n- Strong product intuition and experience optimizing user engagement, retention, and monetization simultaneously\n- Experience with distributed systems and ML infrastructure such as Spark, Airflow, streaming systems, feature stores, and cloud platforms\n- Experience building large-scale ML systems leveraging deep learning, sequence models, LLMs, reinforcement learning, or bandit frameworks\n- Strong expertise in ranking systems, recommendation systems, retrieval, personalization, and multi-objective optimization\n- Proficiency in Python, Java, or Scala\n- MS or PhD in Computer Science, Statistics, or a related field","description_format":"text","description_chars":1835,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-07T13:07:33Z"},{"event":"close","at":"2026-10-10T01:32:24Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 63 · green card filings: 7","filings_12m":63,"filings_prev_12m":149,"green_card_filings_12m":7,"median_offered_wage_usd":223500,"route":null,"cap_exempt":false,"checked_at":"2026-10-03T21:08:04+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":43}],"liveness":null,"pay":{"stated_usd_annual":510000,"is_top_pay":true},"html_url":"https://alion.io/job/roku-senior-machine-learning-engineer-search-2","json_url":"https://alion.io/job/roku-senior-machine-learning-engineer-search-2.json","meta":{"generated_at":"2026-10-12T19:12:16Z","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":31060,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"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":185188},"rest":"https://alion.io/mcp/rest/get_company?id=185188"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Froku-senior-machine-learning-engineer-search-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%2Froku-senior-machine-learning-engineer-search-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%2Froku-senior-machine-learning-engineer-search-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/roku-senior-machine-learning-engineer-search-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Froku-senior-machine-learning-engineer-search-2"}]}