Seeking a detail-oriented Payroll Supervisor to manage end-to-end payroll administration for a contract position at a well-established independent advertising agency in Santa Monica, offering remote work flexibility and occasional onsite collaboration, while overseeing payroll for approximately 500 employees across multiple states. Key responsibilities: Oversee payroll processing for three pay groups, ensuring accuracy and timeliness for both freelance and salaried employees Maintain compliance with federal, state, and local wage and tax requirements while managing payroll records in ADP Workforce Now Collaborate with HR and Finance to address payroll inquiries and support onboarding processes Required qualifications: Demonstrated experience managing full-cycle payroll, particularly with ADP Workforce Now Proven ability to process weekly and semi-monthly payrolls accurately for a workforce of 500 or more employees Solid understanding of multi-state payroll practices and regulatory compliance Experience with employee onboarding support and payroll system administration Familiarity with Greenhouse or similar applicant tracking systems is preferred