Sr Assoc Scientist, Bioconjugate Analytics (ABMS)

At Regeneron, we use science and innovation to develop life-changing medicines for people with serious diseases. We are seeking a highly motivated Sr. Associate Scientist to join the Bioconjugate Analytics (BCA) team within the Analytical and Biological Mass Spectrometry (ABMS) Group. In this role, you will develop and apply LC-MS-based analytical methods to advance Regeneron’s bioconjugate pipeline across all stages of development, including antibody-drug conjugates (ADCs), antibody-oligonucleotide conjugates (AOCs), antibody-tethered ligands (ATLs), and other emerging bioconjugate modalities. You will apply state-of-the-art mass spectrometry and analytical technologies to characterize bioconjugates and other therapeutic protein candidates, with a focus on critical quality attributes and process development, while collaborating closely with cross-functional teams to coordinate samples, study activities, priorities, and timelines. This position offers the opportunity to contribute to a fast-growing, science-driven organization making a meaningful difference to patients worldwide. When & where: • Shift Requirements: Full-time • Location: On-site in Tarrytown, NY What you’ll do: • Develop and apply LC-MS-based analytical methods to characterize bioconjugates and other therapeutic protein candidates across R&D programs • Perform sample preparation, LC-MS experiments, and data analysis using relevant software and bioinformatics tools to characterize product quality attributes; document results in electronic laboratory notebook (ELN) entries, presentations, and reports • Support process development, R&D activities, and regulatory submissions through analytical characterization and scientific problem-solving • Collaborate with cross-functional teams to understand analytical needs, coordinate samples and study activities, and align priorities, timelines, and deliverables • Interpret and communicate scientific results through project and group meetings, technical reports, regulatory documents, internal and external conferences, and peer-reviewed publications The environment and physical rhythms of this role: • This is an innovative, fast-paced, and collaborative R&D laboratory environment requiring results-driven, highly organized, and adaptable scientific curiosity, with the ability to learn new technologies. • Strong cross-functional collaboration and communication, with the ability to build productive working relationships and coordinate samples, activities, priorities, timelines, and deliverables across multiple programs, is required. Let’s find out if we’re a fit: Must-haves: • Master’s degree with at least 3 years of relevant experience, or a Bachelor’s degree with at least 6 years of relevant experience, in Chemistry, Biochemistry, Analytical Chemistry, Pharmaceutical Sciences, or a related field • Industrial or academic experience in analytical characterization of protein therapeutics, bioconjugates, or other therapeutic modalities • Strong knowledge of and hands-on experience with LC-MS-based characterization of proteins, peptides, and bioconjugates (e.g., ADCs, AOCs, and ATLs), including sample preparation, liquid chromatography, mass spectrometry, and data analysis • Enjoyment of developing and troubleshooting analytical methods and solving complex scientific and technical problems Preferred / nice-to-haves: • Experience with advanced mass spectrometer platforms (e.g., Orbitrap, Q-TOF, and triple quadrupole), liquid chromatography, and relevant data processing software (e.g., Protein Metrics, ChemDraw, Skyline, Proteome Discoverer, Compound Discoverer, and other related analytical tools) Thrive today. Grow tomorrow. • Student Loan Paydown program & Tuition Reimbursement • Family Care Benefits • Relocati