{"id":114314,"url":"https://alion.io/job/circadiahealth-senior-machine-learning-engineer","title":"Senior Machine Learning Engineer","company":{"id":16491,"name":"Circadia Health","domain":"circadiahealth.com","url":"https://alion.io/company/circadiahealth","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":80,"open_postings":7,"ghost_share":0,"stale_share":0.714,"repost_share":0.143,"time_to_fill_p50_days":33,"computed_at":"2026-10-17T05:46:00Z"}},"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":["El Segundo, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":150000,"max":240000,"currency":"USD","period":"year","gross":null,"usd_annual":240000},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"LLM Evaluation","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"Time Series Forecasting","optional":false}],"status":"live","first_seen_at":"2026-08-13T20:25:47Z","employer_posted_date":"2026-08-13","last_verified_at":"2026-10-17T21:55:01Z","board_verified":true,"closed_at":null,"days_open":65,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":65},"description":"About Circadia Health\nCircadia Health is a growth-stage healthcare AI company on a mission to prevent avoidable hospitalizations and transform senior-care operations. Our Circadia Intelligence Platform combines:\nContactless sensing that monitors respiration and motion with medical-grade accuracy\n\nNative predictive models that detect 85% of preventable adverse events several days in advance\n\nEnterprise integrations that operationalize predictions directly inside EHR, care-coordination, billing, and compliance workflows\n\nToday, our technology touches 40,000+ post-acute patients daily across skilled-nursing, home-health, and home-care networks. We are backed by leading healthcare and AI investors and headquartered in El Segundo, CA.\nWhy this role exists\nAt most companies the ML engineer supports the product. Here the model is the product, and its accuracy is the ceiling on what the whole platform can deliver.\nWhat we sell is the judgment layer on top of a corpus most teams will never get access to: 70,000 years of continuous vital signs joined to clinical records from more than 400,000 unique patients. You will own the models built on it end to end: what they predict, how they are evaluated, where the threshold sits, and when they ship. Ground truth is retrospective chart review, so your labels are imperfect and you will need to know exactly how.\nWhat you'll own\nModel development. Design, train, and evaluate clinical prediction models, with feature engineering across physiological time series and structured EHR context.\n\nLabels and ground truth. Define what you are actually predicting with clinical teams, build adjudication workflows, and understand the noise in your targets.\n\nEvaluation and testing infrastructure. Build the eval harnesses, backtesting, and regression suites that let us ship new model versions and new configurations with confidence, including how flagging behaves and whether explanations hold up.\n\nClinical evaluation. Sensitivity, specificity, lead time, and alert burden as the care team experiences them. Threshold selection is a clinical decision as much as a statistical one.\n\nRobustness. Find where performance varies across facilities, settings, and demographics, and quantify it.\n\nProduction and evidence. Ship with ML Ops support on serving and deployment, monitor real-world performance, and contribute to validation studies and regulatory submissions.\n\nRequired Qualifications\n5+ years building ML models that reached production and were used for real decisions\nStrong Python and modern deep learning frameworks, plus fluency in classical ML\nExperience with time-series or sequential data\nEvaluation practice covering calibration, class imbalance, and temporal leakage\nExperience building evaluation, backtesting, or model regression infrastructure\nStrong SQL and experience with production data\nExperience presenting model behavior and limitations to non-technical stakeholders\nPreferred\nHealthcare ML, clinical prediction, EHR data, physiological signals, or early-warning systems\nModel validation supporting regulatory submission, or subgroup analysis in a clinical setting\nFirst-author publications, significant open source, competition results, or a high-bar research or engineering background","description_format":"text","description_chars":3256,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Medical AI","Patient Monitoring"],"lifecycle":[{"event":"open","at":"2026-08-13T20:25:47Z"}],"visa":[],"liveness":{"score":19,"band":"cold","label":"Long shot","p_open":1,"p_active":0.526,"p_room":0.36,"age_days":64,"expected_fill_days":33,"reasons":["conf:3","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":240000,"is_top_pay":true},"html_url":"https://alion.io/job/circadiahealth-senior-machine-learning-engineer","json_url":"https://alion.io/job/circadiahealth-senior-machine-learning-engineer.json","meta":{"generated_at":"2026-10-17T23:19:31Z","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":1622,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":16491},"rest":"https://alion.io/mcp/rest/get_company?id=16491"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fcircadiahealth-senior-machine-learning-engineer"},{"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%2Fcircadiahealth-senior-machine-learning-engineer"},{"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%2Fcircadiahealth-senior-machine-learning-engineer"},{"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/circadiahealth-senior-machine-learning-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fcircadiahealth-senior-machine-learning-engineer"}]}