At Regeneron, we use science and innovation to develop life-changing medicines for people with serious diseases. Regeneron is currently seeking multiple 2027 Co-ops in Analytical & Bioanalytical Sciences to join our Analytical and Biological Mass Spectrometry (ABMS), Assay Development, and R&D Chemistry teams, which develop and apply analytical, bioanalytical, and mass spectrometry-based methods to characterize therapeutic proteins, bioconjugates, and other complex biotherapeutics.

These positions offer the opportunity to contribute to a fast-growing, science-driven organization making a meaningful difference to patients worldwide.

When & where:

Location: Tarrytown, NY and Hawthorne, NY

Timeframe: Our Co-op positions are full-time and onsite from January-August (Spring-Summer), May/June-December (Summer-Fall), and August-December (Fall).

Pay: Intern and Co-op pay ranges are determined by level of education (year in school) and degree program. The hourly rate range for these locations is: $17.90-$50.90 per hour.

What you’ll do:

• Develop and run liquid chromatography-mass spectrometry (LC-MS) and mass spectrometry imaging (MSI) methods to characterize therapeutic proteins, bioconjugates, and biomarkers
• Apply mass spectrometry fragmentation techniques, including collision-induced dissociation (CID) and electron-based dissociation (ExD), to characterize conjugated payloads
• Use capillary electrophoresis-mass spectrometry (CE-MS) and imaged capillary isoelectric focusing (iCIEF) to characterize protein charge variants
• Build reference databases and spectral libraries, and process and interpret mass spectrometry data to validate molecular structures
• Run high-throughput proteomics workflows using data-independent acquisition (DIA) methods and perform database searching with false discovery rate (FDR) control
• Develop and evaluate platform immunoassays, including enzyme-linked immunosorbent assay (ELISA) and western blot methods, to support preclinical and clinical bioanalytical studies
• Support the development and purification of antibody-drug conjugates (ADCs) using multiple conjugation chemistries, chromatography, and peptide mapping techniques, and compare platform performance across different bioconjugate modalities
• Document experimental procedures and results, and present findings to the broader analytical sciences team

Relevant majors: Biology, Chemistry, Biomedical/Chemical Engineering, Pharmacy

Let’s find out if we’re a fit:

• Must be enrolled in, or accepted to, an academic program pursuing an Undergraduate or Graduate degree (and be returning to school the semester following the position or graduating after the position)
• Must be able to commit to 40 hours per week from January-August, May/June-December, or August-December
• Demonstrated leadership in areas such as campus activities, clubs, sports, current or previous work, or within the community preferred
• Cumulative GPA of 3.0 or higher preferred

Does this sound like you? Apply now to take your first step towards living the Regeneron Way! We are committed to building a workplace with an inclusive culture. 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, sexual orientation, gender identity or expression, gender reassignment, marital or civil partnership status, civil status, pregnancy or parental status, age, disability, nationality, citizenship status, ethnic or national origin, membership of the Traveler community, familial status, genetic information, military or veteran status, or any other characteristic protected under applicable law. Where required, we will provide reasonable accommodation to applicants with known disabilities or chronic illnesses during the recruitment process, unless such accommodation would impose undue hardship.

Where necessary, we disclose salary ranges for roles in all countries in which we operate. The final offer will be determined within the relevant range based on the country of employment, specific role level, and your skills and experience. In some countries, collective bargaining agreements (CBAs) may apply and influence certain elements of pay or benefits. Regeneron offers a competitive and comprehensive total rewards package which may include, depending on country and role: annual bonuses or other incentive plans, equity awards, pension or retirement benefits, 401(k) company match, health and wellness programs, fitness centers, insurance benefits (e.g. medical, dental, vision, life and disability), paid time off, and family support benefits. For additional information about Regeneron benefits in the U.S., please visit https://careers.regeneron.com/en/working-at-regeneron/total-rewards/. For other locations, additional information will be provided during the recruitment process. If you have any questions, please speak with your recruiter.

Please be advised that at Regeneron, we believe we do our best work when we are together. For that reason, many roles are required to be performed on‑site. Please speak with your recruiter and hiring manager for more information about on‑site expectations for your role and location.

As part of the recruitment process, certain background checks may be conducted in accordance with the laws of the country where the position is based. The purpose of such checks is to verify certain information prior to the commencement of employment such as identity, right to work and educational qualifications.

For jobs in Canada: this posting is for an existing position.