{"id":69459,"url":"https://alion.io/job/appier-senior-machine-learning-scientist-roas-tokyo","title":"Senior Machine Learning Scientist (ROAS) - Tokyo","company":{"id":177717,"name":"Appier","domain":"appier.com","url":"https://alion.io/company/appier-2","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":86,"open_postings":59,"ghost_share":0.153,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":323,"computed_at":"2026-10-22T06:10:10Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Tokyo, Japan"],"countries":["JP"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":51000,"max_usd":111000,"period":"year","method":"role_seniority_country_cell","sample_n":10},"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"PyTorch","optional":false},{"name":"SQL","optional":false},{"name":"TensorFlow","optional":false}],"status":"live","first_seen_at":"2026-01-09T01:12:11Z","employer_posted_date":"2026-05-20","last_verified_at":"2026-10-22T23:57:26Z","board_verified":true,"closed_at":null,"days_open":287,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":286},"description":"About Appier \nAppier is an AI-native Agentic AI as a Service (AaaS) company that uses artificial intelligence (AI) to power business decision-making. Founded in 2012 with a vision of democratizing AI, Appier’s mission is turning AI into ROI by making software intelligent. Appier now has 17 offices across APAC, Europe and U.S., and is listed on the Tokyo Stock Exchange (Ticker number: 4180). Visit www.appier.com for more information.\nThe Impact You’ll Make at Appier\nAppier is seeking a Senior Machine Learning Scientist to join our Advertising Cloud Optimization team, which leads the development of core machine learning algorithms driving campaign efficiency and advertiser ROI. Our programmatic advertising platform operates at a massive scale, handling over multi millions queries per second (QPS), all powered by our proprietary deep learning models for bidding, pricing, and personalized content delivery.\nIn this role, you’ll build identify graph to enrich unified customer profile and also identify high purchase value users to drive ROAS by machine learning model.\nWhat You’ll Work On\nLeverage scientific methods to build identify graph and identify high-value users\nDrive online experiments to continuously improve ROAS\nOwn the project independently.\nPartner with product stakeholder, backend and frontend to provide measurement solution for our customers.\nWhat We’re Looking For\nMaster’s or PhD’s degree in Computer Science, Machine Learning, Statistics, or related field.\n3+ years of industry experience on identify graph, ID mapping and cross-device mapping in digital Ads related fields, and generate mapping and profile under large-scale data.\nProficiency in Python and SQL experience with modern ML frameworks (PyTorch, TensorFlow, etc.).\nStrong ownership and collaboration skills.","description_format":"text","description_chars":1801,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Machine Learning","Advertising","Marketing & Sales AI"],"lifecycle":[{"event":"open","at":"2026-01-09T01:12:11Z"}],"visa":[],"liveness":{"score":46,"band":"ok","label":"Likely open","p_open":1,"p_active":0.772,"p_room":0.6,"age_days":286,"expected_fill_days":323,"reasons":["conf:0","win:late","crowd:"],"computed_at":"2026-10-22T06:10:10Z"},"pay":null,"html_url":"https://alion.io/job/appier-senior-machine-learning-scientist-roas-tokyo","json_url":"https://alion.io/job/appier-senior-machine-learning-scientist-roas-tokyo.json","meta":{"generated_at":"2026-10-23T03:58:40Z","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":6516,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-24T00:00:00Z"}},"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":177717},"rest":"https://alion.io/mcp/rest/get_company?id=177717"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fappier-senior-machine-learning-scientist-roas-tokyo"},{"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%2Fappier-senior-machine-learning-scientist-roas-tokyo"},{"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%2Fappier-senior-machine-learning-scientist-roas-tokyo"},{"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/appier-senior-machine-learning-scientist-roas-tokyo\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fappier-senior-machine-learning-scientist-roas-tokyo"}]}