Co-op Analytical & Bioanalytical Sciences

Tarrytown, NY and Hawthorne, NY

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

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.

• 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

• Biology, Chemistry, Biomedical/Chemical Engineering, Pharmacy

• 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

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.

• 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
• Family support benefits

For additional information about Regeneron benefits in the U.S., please visit

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…