{"id":127872,"url":"https://alion.io/job/krea-ml-engineer-personalization-recommendation-systems","title":"ML Engineer - Personalization & Recommendation Systems","company":{"id":48104,"name":"KREA","domain":"krea.ai","url":"https://alion.io/company/krea","size_band":"1-10","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":3,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-22T06:10:10Z"}},"role":"AI/ML","role_family":"AI/ML","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":164000,"max_usd":362000,"period":"year","method":"role_country_seniority_unknown","sample_n":4194},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"JAX","optional":false},{"name":"Machine Learning","optional":false},{"name":"Python","optional":false},{"name":"PyTorch","optional":false},{"name":"Recommender Systems","optional":false},{"name":"Diffusion Models","optional":true},{"name":"Embeddings","optional":true}],"status":"live","first_seen_at":"2025-12-17T02:34:13Z","employer_posted_date":"2025-12-17","last_verified_at":"2026-10-22T21:24:36Z","board_verified":true,"closed_at":null,"days_open":309,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":309},"description":"About Krea\nAt Krea, we are building next-generation AI creative tools.\nWe're dedicated to making AI intuitive and controllable for creatives - our mission is to build tools that empower human creativity, not replace it. We believe AI is a new medium that allows us to express ourselves through various formats - text, images, video, sound, and even 3D. We're building better, smarter, and more controllable tools to harness this medium. We recently took this a step forward with the launch of Krea 2, our first foundation model, built completely from scratch for aesthetic diversity and stylistic control, and with Krea 3 - our new image editing model.\nWe've raised over $83M and are backed by world-class investors such as a16z, Bain Capital, and Abstract. We work full-time and in-person at our waterfront office in San Francisco. We care about creativity: our team includes musicians, designers, visual artists, and engineers.\nThis role\nWe’re looking for an ML Engineer to architect and build Krea’s personalization and recommendation systems from scratch. You’ll have full ownership over how we understand user taste, curate content, and adapt generative models to individual aesthetics.\nThis is a role at the intersection of recommendation systems, representation learning, and generative image and video tools.\nWhat you’ll do\nArchitect and build Krea’s personalization and recommendation stack from the ground up, owning the technical direction end to end\n\nDesign algorithms to model user preference and taste, enabling Krea’s models to adapt to individual styles and aesthetics\n\nBuild high-quality, curated feeds that balance exploration, personalization, and aesthetic coherence\n\nWork directly with the our model and research team to co-design personalization mechanisms that influence how our generative models learn, adapt, and express style\n\nContribute to personalized image generation research, with a focus on style, taste and subjective quality\n\nCollaborate closely with product, design, and research to define what “good personalization” means in a creative context\n\nTake systems from research and prototyping through production, iteration, and continuous improvement\n\nWhat we’re looking for\nStrong experience building recommendation systems or personalized feeds from scratch\n\nProven ability to design and ship high-quality curated content experiences\n\nExperience working with media-based personalization (image, video preferred; music or other modalities also welcome)\n\nSolid foundations in machine learning, representation learning, and modern deep learning techniques\n\nStrong Python skills and experience with ML frameworks such as PyTorch or JAX\n\nAbility to operate independently, make architectural decisions, and own complex systems end to end\n\nNice to have\nExperience with large-scale data systems and production ML infrastructure\n\nPrior work on or familiarity with diffusion models or generative image systems\n\nBackground in embeddings, similarity search, ranking, or aesthetic evaluation\n\nInterest in creative tools, art, design, or generative media\n\nWhat we offer\nTeam: Work alongside a world-class team building the future of AI creative tooling\n\nImpact: Significant scope and company-wide impact\n\nCompetitive compensation: generous salary & equity packages\n\nHealth & wellness: 100% health & 99% dental/vision insurance premiums covered for employees, health FSA accounts, & long-term disability coverage\n\nTime off: Flexible PTO policy\n\nFinancial planning: 401k with a 4% company-sponsored match\n\nMeals in the office: breakfast, lunch, dinner - you name it, we'll cover it\n\nTransit: Ubers covered to & from the office\n\nSponsorship: We're open to sponsoring international visas where we can (e.g., STEM OPT, OPT, H-1B, O-1, E-3).\n\nAnd more!\n\nPlease note the above benefits & perks are for full-time employees","description_format":"text","description_chars":3834,"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":[]},"benefits":["401k plan","Equity","Vision insurance"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Generative Image"],"lifecycle":[{"event":"open","at":"2025-12-17T02:34:13Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 1","filings_12m":1,"filings_prev_12m":4,"green_card_filings_12m":0,"median_offered_wage_usd":107500,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":0}],"liveness":{"score":4,"band":"cold","label":"Long shot","p_open":1,"p_active":0.136,"p_room":0.28,"age_days":309,"expected_fill_days":25,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-10-22T06:10:10Z"},"pay":null,"html_url":"https://alion.io/job/krea-ml-engineer-personalization-recommendation-systems","json_url":"https://alion.io/job/krea-ml-engineer-personalization-recommendation-systems.json","meta":{"generated_at":"2026-10-23T00:44:34Z","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":1264,"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":48104},"rest":"https://alion.io/mcp/rest/get_company?id=48104"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fkrea-ml-engineer-personalization-recommendation-systems"},{"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%2Fkrea-ml-engineer-personalization-recommendation-systems"},{"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%2Fkrea-ml-engineer-personalization-recommendation-systems"},{"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/krea-ml-engineer-personalization-recommendation-systems\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fkrea-ml-engineer-personalization-recommendation-systems"}]}