Senior Actuary/Financial Analyst

Haystack Health is a pioneering clinical trial platform focused on value-based care, collaborating with health plans, ACOs, and sponsors to enhance patient access to clinical trials. The Senior Actuary/Financial Analyst will be responsible for developing actuarial models that quantify the economic value of enrolling members in clinical trials and engage with finance leadership and external stakeholders to validate those models.

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