Senior Actuary/Financial Analyst

About Haystack Health

Haystack Health is the first clinical trial platform for value-based care. We partner with health plans, ACOs, sponsors, and health systems to connect patients to clinical trials that improve outcomes, expand access, and reduce cost. 

As a rapidly growing, category-defining company, Haystack operates at the intersection of healthcare delivery, payer strategy, and clinical research. Our model brings together payers, trial sponsors, providers, and research sites to unlock access to clinical trials at scale – fundamentally rethinking how patients are identified, engaged, and enrolled. 

Position Summary

Haystack Health is seeking a Senior Actuary / Financial Analyst to own the actuarial backbone of our savings story and serve as the technical authority behind how we quantify value for plans and ACOs. Reporting into finance leadership, you will build the models that measure the standard-of-care costs avoided when Haystack enrolls members into sponsor-funded clinical trials, and you'll defend that methodology directly to the credentialed actuaries and CFOs on the other side of the table. You'll operate at the intersection of actuarial science, claims analytics, and client engagement: the right candidate thrives in early-stage environments, brings rigor to ambiguous measurement problems, and is energized by the opportunity to define how a category-defining company proves its economic impact alongside a growing, high-performing team.

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.

Qualifications

• 5+ years of experience in healthcare actuarial, medical economics, or finance roles at a health plan, ACO, consulting firm, or PBM; ASA/FSA credentials or progress toward them strongly preferred.
• Deep hands-on experience with medical and Rx claims data, including familiarity with stop-loss/reinsurance accounting, rebate flows, and Part D benefit design.
• Proven ability to communicate complex financial methodology to sophisticated external audiences, including CFOs and credentialed actuaries.
• Strong SQL and Excel skills; experience with Python/R and claims analytics platforms a plus.

Additional Information 

This is a full-time, remote position. Compensation will be competitive and commensurate with experience and includes equity participation and a comprehensive company-sponsored benefits package. Preference will be given to candidates who are available to work Central or Eastern time to align with team operations. 

We are an equal opportunity employer and are committed to building a diverse and inclusive team. All employment decisions are based on qualifications, merit, and business needs.