Lead Data Scientist
Onos Health
Lead Data ScientistWe're looking for a Lead Data Scientist who thrives in a fast-moving startup, loves solving complex problems in messy healthcare data, and wants to directly shape how payers manage care. This is a highly strategic and hands-on role at the intersection of data science, product, and clinical operations.As Onos' lead data scientist, you'll own the development of our core analytics and AI models, from designing predictive frameworks to measuring clinical appropriateness and cost savings. You'll partner closely with product, engineering, and client teams to translate data into measurable impact for health plans, driving smarter utilization, improved outcomes, and reduced waste across Behavioral Health.What you'll be doing at Onos:Model Development: Design and deploy predictive, risk-scoring, and optimization models that identify waste, inappropriate utilization, and care improvement opportunities across behavioral health services.AI/ML Infrastructure: Help define and evolve our data science stack, from feature stores and pipelines to model monitoring and evaluation frameworks.Data Exploration & Analysis: Dive deep into claims and clinical data to uncover trends, outliers, and actionable insights.Client & Product Impact: Partner with client teams to translate complex models into clear insights that demonstrate ROI, inform payer workflows, and maintain clear, impactful dashboards.Cross-Functional Leadership: Collaborate with the CEO, CPO, and engineering team to guide product direction, data strategy, and key client engagements.What we're looking for:8+ years of experience in data science or advanced analytics (preferably in healthcare or health plans; experience with claims and clinical data strongly preferred).Deep expertise in statistical modeling, causal inference, and ML (Python, SQL, and related libraries such as scikit-learn, statsmodels, PyTorch, or similar).Familiarity with healthcare data standards (claims, eligibility, EHR/clinical data, coding sets like ICD, CPT, HCPCS)Experience building production-grade models and deploying them in analytical or product environments.Proven experience building, mentoring, and leading high-performing data science or analytics teams.Scrappy with an entrepreneurial mindset: resourceful, proactive, thrives in ambiguity, and moves fastExcellent communication skills an ability to translate complex data into clear business insightsExceptional references from colleagues and former managersBenefits and Perks:Flexible hybrid arrangement: ~3 days/week at San Francisco office (Financial District)Unlimited vacation policyPaid parental leaveMedical, dental, and vision insurancePre-tax commuter benefits401(k)Significant equity as an early employeeDirect mentorship from experienced foundersGround-floor opportunity to help build a team and cultureRegular team events and off-sitesCompany-provided equipment and home office setupWe are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.
$186.1k - $300.55k
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