People Services US Payroll Tax Analyst

Synthorx

Synthorx

Accounting & Finance, People & HR, IT

Morristown, NJ, USA · Swiftwater, PA, USA

Posted on Apr 30, 2026

Job Title: People Services US Payroll Tax Analyst

  • Location: Morristown, NJ


About the Job

The NA Payroll Tax Analyst position is involved in all aspects of U.S. Payroll tax compliance. In this position you are responsible for assisting in the preparation and timely filing of the company’s U.S. federal consolidated returns and state, and local payroll tax returns. In addition, responsibilities will include the preparation and management of the federal/state tax estimate and extension process, develop responses to state and local tax notices, and assist with federal and state tax audits which will include compiling documentation, reports and/or analytics. This position requires full working knowledge of multi-state payroll tax rules, an ability to work independently in a fast-paced, dynamic environment where attention to detail, analytical skills and strong communication skills are essential.

Ready to push the limits of what’s possible? Join Sanofi in one of our corporate functions and you can play a vital part in the performance of our entire business while helping to make an impact on millions around the world.

About Sanofi:
We’re an R&D-driven, AI-powered biopharma company committed to improving people’s lives and delivering compelling growth. Our deep understanding of the immune system – and innovative pipeline – enables us to invent medicines and vaccines that treat and protect millions of people around the world. Together, we chase the miracles of science to improve people’s lives.

Main Responsibilities:

  • Researching transaction tax issues, investigating employee tax inquires and responding with appropriate actions

  • Interpreting and complying with state, local, and international statutes, regulations, and legislation

  • Preparing for, and assisting with, internal and external tax audits

  • Preparing and/or reviewing indirect tax filings.

  • Prepare quarterly tax fillings for Puerto Rico Chauffer’s Tax

Quarter Tax Filing Reconciliation in accordance with ADP deadlines:

  • Providing guidance based on research of new transaction tax laws and regulations.

  • Developing and implementing process improvements

  • Other payroll related responsibilities, such as auditing payroll trials, RSU pre-funding, workman’s comp audits, stock purchase program

  • General payroll processing, including auditing, case management, escalated issue handling and payroll file creation/submission

  • Completing the year end audit of W2 files as well as appropriate W2C’s and amended returns as necessary

  • Assisting with the processing of the global mobility employees to ensure accurate tax set ups are audited and completed.

About You

Basic Qualifications:

  • Bachelor’s Degree from an accredited college or university preferably in accounting or equivalent experience.

  • 3-5 years payroll accounting/tax experience.

Preferred Qualifications:

  • Extensive experience with Payroll tax processing and Federal, State and Local tax laws.

  • Strong experience with Payroll tax preparation software (ADP/Smart Compliance).

  • Ability to communicate with Federal, State and Local taxing authorities.

  • High level of technical skills – Advanced MS Excel required.

  • Solid reconciliation and analytical skills.

  • Strong organizational skills & attention to detail.

  • Strong communication skills - both oral and written.

  • Team-player, customer-centric attitude.

Why Choose Us

  • Bring the miracles of science to life alongside a supportive, future-focused team.

  • Discover endless opportunities to grow your talent and drive your career, whether it’s through a promotion or lateral move, at home or internationally.

  • Enjoy a thoughtful, well-crafted rewards package that recognizes your contribution and amplifies your impact.

  • Take good care of yourself and your family, with a wide range of health and wellbeing benefits including high-quality healthcare, prevention and wellness programs and at least 14 weeks’ gender-neutral parental leave.

  • Drive progress from within by helping simplify, scale, and modernize how a global biopharma business delivers smarter, faster, and more sustainably.

  • Thrive in inclusive, high-performing teams where every role matters and every voice helps shape what’s next.

Sanofi Inc. and its U.S. affiliates are Equal Opportunity and Affirmative Action employers committed to a culturally diverse workforce. All qualified applicants will receive consideration for employment without regard to race; color; creed; religion; national origin; age; ancestry; nationality; marital, domestic partnership or civil union status; sex, gender, gender identity or expression; affectional or sexual orientation; disability; veteran or military status or liability for military status; domestic violence victim status; atypical cellular or blood trait; genetic information (including the refusal to submit to genetic testing) or any other characteristic protected by law.

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Pursue progress, discover extraordinary

Better is out there. Better medications, better outcomes, better science. But progress doesn’t happen without people – people from different backgrounds, in different locations, doing different roles, all united by one thing: a desire to make miracles happen. So, let’s be those people.

At Sanofi, we provide equal opportunities to all regardless of race, colour, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, ability or gender identity.

Watch our ALL IN video and check out our Diversity Equity and Inclusion actions at sanofi.com!

US and Puerto Rico Residents Only

Sanofi Inc. and its U.S. affiliates are Equal Opportunity and Affirmative Action employers committed to a culturally inclusive and diverse workforce. All qualified applicants will receive consideration for employment without regard to race; color; creed; religion; national origin; age; ancestry; nationality; natural or protective hairstyles; marital, domestic partnership or civil union status; sex, gender, gender identity or expression; affectional or sexual orientation; disability; veteran or military status or liability for military status; domestic violence victim status; atypical cellular or blood trait; genetic information (including the refusal to submit to genetic testing) or any other characteristic protected by law.

North America Applicants Only

The salary range for this position is:

$71.250,00 - $102.916,66

All compensation will be determined commensurate with demonstrated experience. Employees may be eligible to participate in Company employee benefit programs. Additional benefits information can be found through the LINK.