Senior Actuary/Financial Analyst

Haystack Health is the first clinical trial platform for value-based care, partnering with health plans and providers to improve patient outcomes. They are seeking a Senior Actuary/Financial Analyst to build models that measure cost savings and defend methodologies to clients, operating at the intersection of actuarial science and client engagement.

Responsibilities:

• Build and maintain actuarial and cost-savings models
• Perform detailed analysis of medical and pharmacy claims data
• Develop, document, and continuously refine Haystack's savings measurement methodology
• Serve as the primary subject-matter expert in client-facing engagements, presenting and defending savings calculations directly to actuaries, CFOs, medical economics teams, and finance leadership at health plans and ACOs
• Partner with clinical, contracting, and data engineering teams to translate trial protocols and patient-level data into financial impact projections across both commercial and government lines of business (Medicare Advantage, Medicaid MCO, commercial fully-insured and ASO)
• Conduct sensitivity analyses, scenario modeling, and reconciliations to validate reported savings against client-side financial systems, and respond to client audits or methodology challenges with clear, data-backed justifications
• Stay current on evolving reimbursement dynamics — including drug pricing trends, IRA negotiated pricing, biosimilar adoption, value-based contracting, and risk-adjustment mechanics — and incorporate these into model assumptions as needed