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Senior Director, Toxicology

Regeneron
Tarrytown, NY Full Time
POSTED ON 10/8/2026
AVAILABLE BEFORE 10/30/2026
Build Our Future Together

At Regeneron, we use science and innovation to develop life-changing medicines for people with serious diseases. We are seeking a Sr. Director, Toxicology to apply advanced knowledge of toxicology and pharmaceutical drug development to advance therapeutic assets through all stages of development. Working individually, or in collaboration with one or more direct reports, you will solve complex scientific and strategic/regulatory problems using extensive drug development experience, as well as state-of-the-art approaches in toxicology, pharmacology, and related disciplines. You'll communicate clearly and effectively at all levels of the organization and positively impact program strategy beyond the core discipline of Toxicology. You will also provide mentoring and management of junior scientific staff, offering relevant project-related guidance and career development, and will work with Toxicology leadership on the review and development of policies and procedures related to the conduct of toxicology research at Regeneron.

This position offers the opportunity to contribute to a fast-growing, science-driven organization making a meaningful difference to patients worldwide.

When & Where

  • Full-time, standard business hours, with flexibility to support before- and after-hours executive meetings, town halls, and corporate events
  • Location: Tarrytown, NY

Discover Your Role

  • Applies advanced knowledge of pharmacology, toxicology, and related disciplines to the design and implementation of preclinical safety programs to support development of new products
  • Ensures effective communication with line-management on all ongoing project activities, status, and issues relating to programs and personnel
  • Writes and/or reviews relevant portions of INDs, BLAs, and other regulatory documents as needed to support program development
  • Communicates effectively with global regulatory authorities in writing, by teleconference, and during face-to-face meetings as necessary
  • Develops and maintains appropriate external contacts to further the advancement of development programs (e.g., contract research organizations, industry-wide scientific societies, regulatory agencies, academic research organizations)
  • Provides consultative toxicology support to scientists and colleagues in other functional areas
  • Maintains a deep understanding of industry trends and regulatory requirements across all major geographic regions and applicable therapeutic areas
  • Contributes as Toxicology representative to corporate due diligence activities when called upon
  • Contributes to the drafting and finalization of SOPs and working practices as requested
  • Provides mentoring and/or supervision to junior scientific staff or direct reports, as appropriate
  • May be called upon to recruit, interview, and hire new scientific staff to meet the needs of the department

This Role Requires

  • Advanced degree (e.g., MS, PhD, DVM) in toxicology or a closely related biological science, along with 15 years of experience, or a Master's Degree plus 20 years, working in toxicology/safety assessment, drug development, or a contract research organization
  • Significant experience or training in the development of biologic therapeutics
  • Board Certification in Toxicology is desirable

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.

Salary Range (annually)

$242,000.00 - $403,300.00

Salary : $242,000 - $403,300

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