Senior Benefits & Payroll Specialist
Arrowhead Pharmaceuticals
September 03, 2026
Full-time
On-site
Pasadena, CA
$110,000 - $110,000 USD yearly
Human Resources
Role: Senior Payroll & Benefits Specialist supporting end-to-end payroll processing and benefits administration across four locations. Responsibilities: assist biweekly payroll via ADP WFN, process off-cycle payrolls, manage equity compensation including grants, exercises, and RSU activity, ensure compliance with regulations, conduct audits, and support HR-related tasks. Requirements: 4+ yearsβ payroll and/or benefits experience, proficiency in ADP WFN and Excel, strong organizational and communication skills, knowledge of wage laws; equity administration knowledge is a plus. HighValue: experience with payroll benefits, equity compensation management, ADP WFN, fast-paced environment, onsite in Pasadena, CA, with flexible hours during peak periods. WorkSetup: onsite Pasadena, CA; no travel specified.