Job Description

Regeneron's Department of Drug Safety and Pharmacometrics (DSP) is offering a 2-week paid externship in Toxicologic Pathology. This externship will take place at Regeneron's corporate site (Tarrytown, NY), which is focused on all phases of drug development and is staffed with nine board-certified Anatomic Pathologists (8 DVM pathologists and 1 MD neuropathologist) with innovative microscopic imaging and analysis facilities.

In this role, a typical day might include:

• Microscopic pathology experience with a variety of strains of rodents (mice and rats).
• Experience with digital pathology and image analysis in the context of discovery and preclinical safety assessment.
• A preview of the preclinical safety and discovery pathology activities of a Toxicologic Pathologist in a pharmaceutical company.
• Access to transgenic rodents which provides a strong background in animal species that are not traditionally accessible in residency training in academia.

This role might be for you if:

• You are currently a resident in an anatomic pathology training program or are a Veterinary Pathology fellow who has previously completed a pathology residency.
• You wish to further your training in and exposure to toxicologic and rodent pathology.
• You are self-motivated and have a clear and demonstrable interest and ongoing experience in anatomic pathology, particularly histopathology.

Applicants should be enrolled in a veterinary anatomic pathology residency with some experience in evaluating diagnostic case material or be employed in a fellowship. This is a paid externship (housing is not provided).

Applications should include curriculum vitae, contact information for three references, and a letter of interest describing professional background, interests and goals, pathology experience and preparation.

Deadline to apply for 2026 externships: January 20, 2026. The position starts in Summer of 2026.

Questions? Reach out to Vikas Kulshreshtha at vikas.kulshreshtha@regeneron.com

Does this sound like you? Apply now to take your first step towards living the Regeneron Way! 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 apply to U.S.-based positions. For roles which will be based in Japan and/or Canada, the salary ranges are shown in accordance with the applicable local law and currency. If you are outside the U.S, Japan or Canada, please speak with your recruiter about salaries and benefits in your location.

Please note that certain background checks will form part of the recruitment process. Background checks will be conducted in accordance with the law of the country where the position is based, including the type of background checks conducted. The purpose of carrying out such checks is for Regeneron to verify certain information regarding a candidate prior to the commencement of employment such as identity, right to work, educational qualifications etc.

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