Sr Quality Control Scientist

Regeneron is seeking a Senior Quality Control Scientist to join our Technical Resources Chemistry Group, where you’ll play a pivotal role in shaping assay development, optimization, validation, and transfer processes for our Quality Control (QC) Chemistry team. We are looking for a motivated and experienced scientist with a strong background in Chemistry to provide mentorship and supervision for release, stability, in‑process testing, and assay development.

As a Senior QC Scientist, you’ll be at the forefront of ensuring technical excellence and regulatory compliance of our processes.

• Leading assay development, validation, optimization, and transfer processes using advanced methodologies such as HPLC, UPLC, UV spectroscopy, and other techniques.
• Reviewing and approving new test procedures and assays to ensure technical accuracy and compliance.
• Facilitating seamless assay transfers from R&D to business partners and organizing analytical assay transfers both internally and externally.
• Driving technical troubleshooting, problem investigation, and resolution for QC chemistry‑related challenges.
• Reviewing technical reports, protocols, and documents for regulatory compliance and scientific integrity.
• Mentoring and training team members on systems, processes, and best practices to foster a collaborative and high‑performing environment.

• You have in‑depth expertise with HPLC‑based assays, including experience with UPLC and UV spectroscopy.
• You possess hands‑on experience working with AAV (adeno‑associated virus).
• You are a strong communicator, both written and verbal, and excel at presenting complex scientific concepts clearly.
• You want to be part of a company that values scientific excellence and innovation.
• You thrive in a fast‑paced environment and are adaptable to shifting priorities and requirements.

You must have a Bachelor’s degree in Chemistry, Biochemistry, or a related field with 5+ years of experience in HPLC, UPLC, and UV spectroscopy.

• A PhD in a relevant field is strongly preferred.
• Direct experience with AAV is highly desirable.

We have an inclusive culture that provides comprehensive benefits, which vary by location. In the U.S., benefits may include health and wellness programs (including medical, dental, vision, life, and disability insurance), fitness centers, 401(k) company match, family support benefits, equity awards, annual bonuses, paid time off, and paid leaves (e.g., military and parental leave) for eligible employees at all levels! For additional information about Regeneron benefits in the US, please visit  For other countries’ specific benefits, please speak to your recruiter.
Please be advised that at Regeneron, we believe we are most successful and work best when we are together. For that reason, many of Regeneron’s roles are required to be performed on‑site. Please speak with your recruiter and hiring manager for more information about Regeneron’s on‑site policy and expectations for your role and your location.

Regeneron is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion or belief (or lack thereof), sex, nationality, national or ethnic origin, civil status, age, citizenship status, membership of the Traveler community, sexual orientation, disability, genetic information, familial status, marital or registered civil partnership status, pregnancy or parental status, gender identity, gender reassignment, military or veteran status, or any other protected characteristic in accordance with applicable laws and regulations.

The Company will also provide reasonable accommodation to the known disabilities or chronic illnesses of an otherwise qualified applicant for employment, unless the accommodation would impose undue hardship on the operation of the Company’s business.

For roles in which the hired candidate will be working in the U.S., the salary ranges provided are shown in accordance with U.S. law and…