{"id":2014100,"url":"https://alion.io/job/roku-senior-machine-learning-engineer-adtech-2","title":"Senior Machine Learning Engineer (AdTech)","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":["Cambridge, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":135000,"max_usd":249000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":35},"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Java","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"Spark","optional":false},{"name":"Aerospike","optional":true},{"name":"MLlib","optional":true},{"name":"ScyllaDB","optional":true},{"name":"TensorFlow","optional":true}],"status":"live","first_seen_at":"2026-06-11T00:13:58Z","employer_posted_date":"2026-10-07","last_verified_at":"2026-10-12T06:37:48Z","board_verified":true,"closed_at":null,"days_open":123,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":123},"description":"Join our mission to build cutting-edge advertising technology that empowers businesses to run sustainable and highly-profitable campaigns. As a Senior Machine Learning Engineer, you will be part of the Ad Performance team, responsible for improving the ad experience through server technologies, data, and cloud services. You will apply your knowledge of experimental methodologies, statistics, optimization, probability theory, and machine learning to solve complex problems and deliver impactful solutions.\nMissions\nContribuer à la construction d'une plateforme de machine learning de premier ordre, gérant l'ensemble du cycle de vie des modèles.\nAppliquer votre expertise pour identifier et générer des caractéristiques pouvant être exploitées par plusieurs cas d'utilisation et modèles.\nUtiliser des techniques d'apprentissage automatique et de modélisation statistique pour développer et évaluer des algorithmes visant à améliorer les performances du produit.\nProfil recherché\n - We're looking for seasoned engineers with a background in machine learning to aid in this mission- Familiarity with real-time evaluation of models with low latency constraints\n- Great coding skills and strong software development experience (we use Spark, Python, Java)\n- Ad tech background is a plus\n- Familiarity with distributed ML frameworks such as Spark-MLlib, TensorFlow, etc\n- Demonstrated depth in applied machine learning on production systems - typically 6+ years in industry, although we value PhD experience as meaningful acceleration\n- Ability to work with large scale computing frameworks, data analysis systems, and modelling environments. Examples include Spark, Hive, NoSQL stores such as Aerospike and ScyllaDB\n- Bachelors, Masters, or PhD in Computer Science, Statistics, or a related field","description_format":"text","description_chars":1795,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Sales & Marketing"],"lifecycle":[{"event":"open","at":"2026-10-07T13:07:33Z"}],"visa":[],"liveness":{"score":19,"band":"cold","label":"Long shot","p_open":1,"p_active":0.667,"p_room":0.28,"age_days":123,"expected_fill_days":46,"reasons":["conf:0","velocity","win:tail","crowd:"],"computed_at":"2026-10-12T06:55:09Z"},"pay":null,"html_url":"https://alion.io/job/roku-senior-machine-learning-engineer-adtech-2","json_url":"https://alion.io/job/roku-senior-machine-learning-engineer-adtech-2.json","meta":{"generated_at":"2026-10-12T07:59:26Z","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":12798,"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-adtech-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-adtech-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-adtech-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-adtech-2\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Froku-senior-machine-learning-engineer-adtech-2"}]}