Payroll & Equity Administration Specialist

Role: Payroll & Equity Administration Specialist supporting Cabaletta Bio's HR and finance functions during rapid growth. Responsibilities: manage end-to-end U.S. payroll, ensure multi-state tax compliance, oversee equity transactions via Shareworks, and process employee travel and expenses through Concur. Collaborate closely with Finance, HR, and IT to optimize payroll systems and ensure accuracy and compliance across all functions. Qualifications: minimum 3 years payroll processing experience within biotech, pharma, or life sciences; strong knowledge of multi-state payroll tax requirements; proficiency with Rippling, Shareworks, NetSuite, and Concur preferred; high accuracy and discretion handling confidential data; excellent cross-functional communication skills. Preferred: experience transitioning payroll from PEO to in-house systems and supporting payroll during rapid growth or product launch phases. High-Value: biotech sector, employee equity management, multi-state payroll, technological transition, collaborative cross-departmental work. WorkSetup: hybrid Philadelphia, PA.