Job Description
Principal Scientist, Toxicologist/Study Director
Job Description:
The Nonclinical Drug Safety department is seeking a motivated and talented toxicologist with immunology and/or biologics experience to conduct and/or monitor toxicity studies (GLP and non-GLP) as a Study Director or Study Monitor and serve as a departmental representative on drug development teams. Toxicologists at our Company are integral members and leaders of collaborative cross functional scientific teams, addressing challenges from early discovery to late development. Our toxicologists provide scientific leadership in the design and overall conduct of in vivo studies and integrate the findings from all contributing scientists into reports that characterize the safety profile of drug candidates.
Key Responsibilities
Serve as the single point of control (Study Director) on assigned acute through chronic general toxicology studies across all modalities. Interact with technical, veterinary, and scientific staff to ensure that the study is in compliance with the protocol, amendments, Standard Operating Procedures, regulations, safety guidelines, and company policies and procedures.
Critically analyze and interpret data. Integrate data from other areas (e.g., clinical pathology, pathology, toxicokinetics) in written reports used for regulatory submissions, and communicate results within established timelines.
Ensure regulatory rigor, proactive risk identification, and timely study execution.
Participate on cross-functional group teams to investigate mechanisms of toxicity, utilizing additional tools and applications that are available on site.
Serve as a departmental representative on a product development team, overseeing the strategy and design of nonclinical safety studies and generation of regulatory strategies and communications with global regulatory agencies to support the development of drug candidates.
Demonstrate enterprise mindset and strategic thinking, proactively identifying opportunities, anticipating challenges, and contributing to solutions aligned with broader organizational priorities.
Build strong collaborative relationships and influences without authority, contributing to an inclusive team environment and actively learning to coach, develop, and elevate others.
Deliver high-quality results with accountability and agility, translating objectives into action while continuously improving, embracing change, and showing potential to lead larger initiatives over time.
Education
PhD and/or DVM with graduate and/or post-graduate work training in toxicology, pharmacology, or related scientific discipline
Requirements
Minimum of 8 (eight) years of relevant experience as a Toxicologist or Study Director in pharma, biotech, or at a CRO
Demonstrated understanding of and experience with Good Laboratory Practices (US FDA 21 CFR Part 58)
Strong interest in collaborating with diverse cross-functional teams and communicating openly and often with colleagues
Strong listening, collaboration, and leadership skills
Ability to communicate clearly using verbal and written formats, including presentations and meetings
Expertise in immunology and/or biologics, especially regulatory requirements and testing
Preferred
Knowledgeable about drug developmentstrategies for biotherapeutics and large molecules
Familiarity with outsourced study monitoring
Experience serving as toxicology expert on a drug discovery and development team
Representation of nonclinical safety in regulatory agency interactions
Required Skills:
Clinical Immunology, Clinical Pathology, Cross-Functional Teamwork, Detail-Oriented, Environmental Toxicology, Experimentation, GLP Regulations, Good Laboratory Practices (GLPs), Identifying Risks, Immunoassays, Immunology, Immunotherapy, Mentoring Staff, Preclinical Toxicology (Inactive), Professional Integrity, Professional Networking, Regulatory Requirements, Report Preparation, Study Directing, Study Monitoring, Technical Advising, Toxicity Studies, Toxicology, Toxicology Research
Preferred Skills:
Current Employees apply HERE
Current Contingent Workers apply HERE
The salary range for this role is
$173,200.00 - $272,600.00
This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting. An employee’s position within the salary range will be based on several factors including, but not limited to relevant education, qualifications, certifications, experience, skills, geographic location, government requirements, and business or organizational needs.
The successful candidate will be eligible for annual bonus and long-term incentive, if applicable.
We offer a comprehensive package of benefits. Available benefits include medical, dental, vision healthcare and other insurance benefits (for employee and family), retirement benefits, including 401(k), paid holidays, vacation, and compassionate and sick days. More information about benefits is available at https://jobs.merck.com/us/en/compensation-and-benefits.
You can apply for this role through https://jobs.merck.com/us/en (or via the Workday Jobs Hub if you are a current employee). The application deadline for this position is stated on this posting.
Employee Status:
Regular
Relocation:
Domestic/International
VISA Sponsorship:
Yes
Travel Requirements:
10%
Flexible Work Arrangements:
Not Applicable
Shift:
Not Indicated
Valid Driving License:
No
Hazardous Material(s):
N/A
Job Posting End Date:
07/23/2026
*A job posting is effective until 11:59:59PM on the day BEFOREthe listed job posting end date. Please ensure you apply to a job posting no later than the day BEFORE the job posting end date.