Payroll & Equity Associate

Reimagine the infrastructure of cancer care within a community that values integrity, inspires growth, and is uniquely positioned to create a more modern, connected oncology ecosystem. We’re looking for a Payroll Associate to help us accomplish our mission to improve and extend lives by learning from the experience of every person with cancer. Are you ready to be the next changemaker in cancer care? What You'll Do In this role, you will execute payroll operations and play a key part in ensuring accurate and compliant processing of equity compensation across the company. You’ll partner closely with the Compensation, Accounting, HR Operations, and Global Mobility teams to manage the intersection of equity and payroll, while also supporting broader Payroll and Financial Benefits functions. As part of this role, you will: Support the preparation and processing of US and international payroll for 3,000+ employees, including Workday data maintenance, auditing, coordination with vendors, and time tracking oversight Administer state and local tax accounts (OSV) and assist with various tax and compliance filings (ACA, 401k Audit) and retirement programs Administer the equity administration software (EquatePlus), performing data maintenance, audits, reconciliation with Workday and the General Ledger, and managing mobility and tax impacts for employees who relocate between states or countries Own end-to-end equity payroll processing, partnering with Compensation and Accounting teams to ensure accurate and timely processing, reporting, and funding of equity transactions Manage employee education and communications related to our equity program Serve as a primary point of contact for employee payroll and equity inquiries by managing Zendesk tickets Proactively develop and improve processes, controls, and documentation for equity and general payroll operations Assist with broader People Operations projects Who You Are You're a kind, passionate, problem-solver who values the opportunity to collaborate with others on new challenges. You handle sensitive information with the utmost discretion and professionalism. You stay calm under pressure and navigate competing priorities with grace. In addition you have: 3+ years of relevant experience in Payroll Hands-on experience processing payroll in an HRIS system (preferrably Workday) Experience with equity administration and taxation Advanced proficiency in Microsoft Excel (i.e. VLOOKUP, Pivot Tables, etc.) and familiarity with Google Suite Proven ability to handle high-volume data accurately and efficiently Effective communication skill and experience communicating with a diverse employee base Strong analytical skills and attention to detail You have a Bachelor’s degree or equivalent experience You have a desire to learn, develop an existing skill set, and take on more responsibility Extra Credit You have experience with international payroll and/or equity You have experience with equity administration in EquatePlus/Computershare You have experience handling tickets in Zendesk Where You’ll Work In this hybrid role, you’ll have a defined work location that includes work from home and 3 office days set by you and your team. For more information on our approach to hybrid work, please visit the how we work website. Life at Flatiron At Flatiron Health, we offer a full range of benefits to support you and your loved ones so you can focus your working hours on improving cancer care and accelerating cancer research, and your non-working hours on everything else life has to offer: Work/life autonomy via flexible work hours and flexible paid time off Comprehensive compensation package 401(k) contribution to help you reach your retirement planning goals Financial health resources including 1:1 financial advice Mental well-being tools and services Parental benefits and policies including family-building care and generous leave Path to parenthood programs supporting fertility, adoption and surrogacy Travel support for safe healthcare services In addition to our robust benefit offerings, visit our Life at Flatiron page to learn how we support continuous learning and celebrate inclusion and belonging in the workplace.