{"id":992979,"url":"https://alion.io/job/unity-technologies-senior-machine-learning-engineer-content-understanding-moderation","title":"Senior Machine Learning Engineer, Content Understanding & Moderation","company":{"id":2743,"name":"Unity Technologies","domain":"unity.com","url":"https://alion.io/company/unity-technologies","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":92,"open_postings":12,"ghost_share":0,"stale_share":0.333,"repost_share":0,"time_to_fill_p50_days":39,"computed_at":"2026-11-04T06:34:25Z"}},"role":"AI/ML","role_family":"AI/ML","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":["Beijing, China","Shanghai, China"],"countries":["CN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":45000,"max_usd":116000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":18},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Embeddings","optional":false},{"name":"Fine-tuning","optional":false},{"name":"Knowledge Distillation","optional":false},{"name":"LLM Evaluation","optional":false},{"name":"Machine Learning","optional":false},{"name":"Model Distillation","optional":false},{"name":"Multimodal AI","optional":false},{"name":"Python","optional":false},{"name":"Unity","optional":false}],"status":"live","first_seen_at":"2026-09-15T00:00:00Z","employer_posted_date":"2026-09-15","last_verified_at":"2026-11-04T11:46:03Z","board_verified":true,"closed_at":null,"days_open":50,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":50},"description":"Unity Ads serves billions of ad requests across hundreds of thousands of mobile games. Every one of those requests involves content on both sides: an ad creative we are about to show, and a game we are about to show it for.\nUnderstanding that content- what is in it, who it is appropriate for, and whether it belongs on the network at all - underpins both the safety of the marketplace and its relevance. The Content Understanding and Moderation charter coversrepresentation, turning creatives and games into signals our models can use, and enforcement, detecting and acting on content that violates policy, regulation, or advertiser and publisher expectations. These are deliberately a single charter: the same multimodal understanding that improves relevance is what makes moderation possible at scale.\nThe Role\nWe are seeking a senior machine learning engineer to define how Unity understands and moderates the content flowing through its ad network. You will work closely with a world-class modeling team to power the recommendation for billions of users, while keeping them safe from bad content.\nWhat You’ll Do\nExecute on the multimodal content representation strategy across video, image, playable, audio, and text, so that one set of foundations serves both relevance and moderation rather than two divergent stacks\n\nPartner with product, engineering, science teams to translate regulatory and contractual obligations into objectives an ML system can be measured against\n\nDefine what good looks like where labels are scarce, noisy, and genuinely contested, and build the evaluation and labeling infrastructure that makes it measurable\n\nBuild the shared foundations other teams depend on, including content embeddings, game level features, evaluation harnesses, and labeling pipelines\n\nWhat We’re Looking For\nExperience in multimodal machine learning combining vision and language, with video experience especially relevant\n\nExperience owning a trust and safety, content moderation, brand safety, or policy enforcement system in production, where being wrong in either direction carried real consequences\n\nExperience operating where labels are scarce, ambiguous, or disputed, and where the definition of a violation shifts over time\n\nExperience adapting foundation models for production use, including fine-tuning, distillation, and optimization for latency and cost\n\nStrong programming skills in Python and experience running production ML systems on a serving path, with fluency in latency, throughput, and cost tradeoffs\n\nExperience reviewing and remaining accountable for production code, including code produced with AI assistance\n\nYou might also have (optional)\nFamiliarity with regulatory and policy regimes affecting advertising content, such as DSA, child-directed treatment, and regional advertising standards\n\nStrong systems thinking, with the ability to reason about performance, scalability, reliability, and cost tradeoffs in distributed systems\n\nBase Salary Range: ¥341,000 - ¥943,000 CNY gross\nThis range reflects the anticipated base salary for this position. Beyond base salary, this role may be eligible for equity awards and participation in our company incentive plans (such as annual discretionary bonuses or sales commissions). The final offer amount will depend on several factors, including geographic location and the candidate’s relevant experience, professional background, and skill set.\nBenefits\nAt Unity, we want our team members to thrive. We offer a wide range of benefits designed to support well-being and work-life balance.\nPlease note: Benefits eligibility, specific offerings, and coverage vary based on the country and employment status.\nWhile specific benefits vary, here are some of the ways we strive to take care of our eligible team members globally: Comprehensive health, life, and disability insurance | Commute subsidy | Employee stock ownership | Competitive retirement/pension plans | Generous vacation and personal days | Support for new parents through leave and family-care programs | Office food snacks | Mental Health and Wellbeing programs and support | Employee Resource Groups | Global Employee Assistance Program | Training and development programs | Volunteering and donation matching program\nLife at Unity\nUnity [NYSE: U] is the world’s leading game engine, powering play for more than 3 billion consumers each month. The top mobile games in the world, the most played PC indie titles, the most innovative console games, and virtually all of the top XR and Web Games are developed, deployed, and grown in Unity. Unity also enables teams across industries like automotive, manufacturing, and healthcare to design, simulate, and collaborate in 3D - closing the gap between ideas and reality. For more information, please visit www.unity.com.\nUnity is an equal opportunity employer committed to fostering an inclusive, innovative environment with the best employees. Therefore, we provide employment opportunities without regard to age, race, color, ancestry, national origin, disability, gender, or any other protected status in accordance with applicable law. If you have a disability that means there are preparations or accommodations we can make to help ensure you have a comfortable and positive interview experience, please fill out this form to let us know.\nThis position requires the incumbent to have a sufficient knowledge of English to have professional verbal and written exchanges in this language since the performance of the duties related to this position requires frequent and regular communication with colleagues and partners located worldwide and whose common language is English.\nHeadhunters and recruitment agencies may not submit resumes/CVs through this website or directly to managers. Unity does not accept unsolicited headhunter and agency resumes. Unity will not pay fees to any third-party agency or company that does not have a signed agreement with Unity.\nYour privacy is important to us. Please take a moment to review ourProspect and Applicant Privacy Policies. Should you have any concerns about your privacy, please contact us at .","description_format":"text","description_chars":6144,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":false}]},"benefits":["Equity","Generous vacation","Retirement plans"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Commerce","Consumer Electronics","Mobile Games","Marketplaces"],"lifecycle":[{"event":"open","at":"2026-09-17T05:20:44Z"}],"visa":[],"liveness":{"score":34,"band":"fade","label":"Fading","p_open":1,"p_active":0.783,"p_room":0.44,"age_days":50,"expected_fill_days":39,"reasons":["conf:0","velocity","win:tail","crowd:brand"],"computed_at":"2026-11-04T06:34:25Z"},"pay":null,"html_url":"https://alion.io/job/unity-technologies-senior-machine-learning-engineer-content-understanding-moderation","json_url":"https://alion.io/job/unity-technologies-senior-machine-learning-engineer-content-understanding-moderation.json","meta":{"generated_at":"2026-11-04T13:19:42Z","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":20175,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-05T00:00:00Z"}},"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":2743},"rest":"https://alion.io/mcp/rest/get_company?id=2743"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Funity-technologies-senior-machine-learning-engineer-content-understanding-moderation"},{"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%2Funity-technologies-senior-machine-learning-engineer-content-understanding-moderation"},{"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%2Funity-technologies-senior-machine-learning-engineer-content-understanding-moderation"},{"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/unity-technologies-senior-machine-learning-engineer-content-understanding-moderation\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Funity-technologies-senior-machine-learning-engineer-content-understanding-moderation"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":992979}},{"tool":"search_jobs","arguments":{"company":"unity.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":992979},"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); https://alion.io/mcp with an Alion account has everything. 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