{"id":3816886,"url":"https://alion.io/job/knorex-senior-data-scientist-adtech","title":"Senior Data Scientist - AdTech","company":{"id":175183,"name":"Knorex","domain":"knorex.com","url":"https://alion.io/company/knorex","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":null},"role":"Data Science","role_family":"Data Science","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Ho Chi Minh City, Vietnam"],"countries":["VN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"LightGBM","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"Scikit-learn","optional":false},{"name":"XGBoost","optional":false},{"name":"A/B Testing","optional":true}],"status":"live","first_seen_at":"2026-11-05T16:25:32Z","employer_posted_date":"2026-11-05","last_verified_at":"2026-11-06T15:05:32Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"About the Role\nWe are seeking a Senior Data Scientist with strong machine learning expertise, analytical thinking, and business understanding to join our R&D team.\nYou will take ownership of key machine learning initiatives, particularly conversion prediction (CPA optimization), CTR prediction, and bidding optimization. The role focuses on translating business challenges into practical ML solutions, improving advertising performance, and maintaining existing ML models in production.\nKey Responsibilities\nDevelop, maintain, and optimize machine learning models, particularly CTR/CVR prediction.\nUnderstand business objectives and translate them into actionable ML solutions that deliver measurable impact.\nAnalyze advertising performance, investigate anomalies, and identify opportunities for improvement.\nDesign experiments and evaluate model effectiveness using both ML metrics and business KPIs.\nTake ownership of existing ML projects, ensuring their continuous improvement and reliability in production.\nCollaborate with Data Scientists, Engineers, and business teams to drive ML initiatives.\nRequirements\nMust Have\n4+ years of experience in Data Science or Machine Learning, preferably with production ML experience.\nExperience solving real-world ML problems in AdTech, FinTech, or similar domains, particularly those involving incomplete, delayed, or biased labels.\nStrong knowledge of ML algorithms, feature engineering, model evaluation, and optimization.\nProficiency in Python and ML frameworks such as Scikit-learn, XGBoost, or LightGBM.\nStrong business understanding and analytical problem-solving skills, with the ability to connect ML solutions to business outcomes.\nAbility to independently own ML projects, investigate issues, and drive improvements.\nGood English communication and collaboration skills.\nNice to Have\nExperience in RTB, CTR/CVR prediction, CPA optimization.\nKnowledge of A/B testing, model calibration, and online experimentation.\nExperience with large-scale data processing and production ML systems.\nFamiliarity with LLMs and AI coding assistants.\nWhat We Value\nWe value someone who understands not only how to build models, but also why they matter to the business - a proactive problem solver who takes ownership and focuses on real-world impact.\nBenefits\nCompetitive remuneration package including quarterly bonus and performance review opportunities.\nFull participation in mandatory insurance programs in accordance with Vietnamese Labor Law.\nHealthcare insurance package and annual health check-up.\nComprehensive benefits scheme such as W3F (Work, Wellbeing, Welfare) Fund for courses, materials, personal health and wellbeing.\nWork from home benefits.\nYou will have the advance to influence and drive the changes, at Knorex we welcome good ideas and accept any possibility to make our company great.\nWe offer great learning opportunities; you will have exposure to cutting edge performance marketing and advertising technology.\nOpportunity to work cross-country and with a variety of projects of a different nature.","description_format":"text","description_chars":3058,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[{"language":"Vietnamese","level":"All levels","optional":false},{"language":"English","level":"Upper-Intermediate (B2)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Sales & Marketing","Advertising","Marketing Automation","Marketing & Sales AI"],"lifecycle":[{"event":"open","at":"2026-11-05T16:25:32Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":88,"reasons":["conf:4","win:early"],"computed_at":"2026-11-06T05:58:05Z"},"pay":null,"html_url":"https://alion.io/job/knorex-senior-data-scientist-adtech","json_url":"https://alion.io/job/knorex-senior-data-scientist-adtech.json","meta":{"generated_at":"2026-11-06T16:18:40Z","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":30309,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-07T00:00:00Z"}},"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":175183},"rest":"https://alion.io/mcp/rest/get_company?id=175183"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fknorex-senior-data-scientist-adtech"},{"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%2Fknorex-senior-data-scientist-adtech"},{"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%2Fknorex-senior-data-scientist-adtech"},{"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/knorex-senior-data-scientist-adtech\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fknorex-senior-data-scientist-adtech"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3816886}},{"tool":"search_jobs","arguments":{"company":"knorex.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3816886},"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); 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