Jen Greco

About Jen Greco

I lead and advise on complex, multi-state payroll and payroll tax operations in high-growth, regulated environments.With 15+ years of experience across venture-backed companies, healthcare, public sector, and start-ups, I’ve built and scaled payroll functions for multi-entity organizations supporting distributed workforces across 40+ states. My expertise spans payroll operations, payroll tax compliance, benefits and retirement administration, and HR systems governance, ensuring accuracy, audit readiness, and long-term scalability.In my current role, I oversee end-to-end payroll and payroll tax operations, serving as a subject matter expert for Rippling Payroll & HRIS. I partner closely with Finance, Legal, and People leadership on entity expansion, compliance strategy, tax issue resolution, and system architecture, with a focus on risk mitigation, internal controls, and operational efficiency.Earlier in my career, I’ve held leadership roles including Chief Operating Officer and Technical Account Manager within payroll technology, giving me a rare blend of operator, systems, and advisory experience. This background allows me to approach payroll as a strategic business function rather than a transactional process.I hold an MBA and maintain SPHR and Certified Payroll Professional (CPP) credentials. I’m known for building payroll organizations that executive teams trust, designed to scale, withstand audit scrutiny, and support business growth without disruption.I’m frequently consulted on complex payroll tax, compliance, and system design challenges.

Experience

1. Payroll Manager Payroll Tax Manager

   Atomic

   Sep 2022 — Present · San Francisco, CA, US

   Lead and optimize payroll and payroll tax operations for a fast-growing venture-backed organization with 20+ entities and a distributed workforce of 300+ employees across 40+ states- Own end-to-end multi-state, multi-entity payroll processing, ensuring accuracy, timeliness, and full compliance with federal, state, and local wage & hour laws- Lead payroll tax management, including reconciliation, corrections, amendments, and year-end reporting (W-2/W-3, 941, 940, state equivalents) to minimize risk and prevent penalties- Oversee 401(k) plan administration and conduct audits to ensure compliance with ERISA regulations, contribution accuracy, and reporting requirements- Act as primary strategic partner to Finance, Legal, and People leadership, advising on payroll-related matters and internal controls- Oversee complex multi-state compliance, audit readiness, and agency correspondence, ensuring smooth resolution of payroll tax notices and inquiries- Manage employee leaves (FMLA, state, and other leave types) and coordinate with state agencies and insurance providers to integrate leave pay into payroll accurately

Education

• Western Governors University

  Bachelor of Science Business - Human Resources, Human Resources Management and Services

• Western Governors University

  Master of Business Administration - MBA, Business Administration and Management, General