Associate Principal Scientist, Toxicology/Study Director
$142.4k - $224.1kMerck Sharp & Dohme (MSD)
Job DescriptionJob Description: The Nonclinical Drug Safety department is seeking a motivated and talented toxicologist to conduct and/or monitor toxicity studies (GLP and non-GLP) as a Study Director or Study Monitor. 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. Demonstrate enterprise mindset and strategic thinking, proactively identifying opportunities, anticipating challenges, and contributing to solutions aligned with Nonclinical Drug Safety organizational priorities. Build strong collaborative relationships and influences without authority, contributing to an inclusive team environment. Deliver high-quality results with accountability and agility, translating objectives into action while continuously improving, embracing change, and demonstrating leadership. As needed, lead and/or participate in method development, inter-group initiatives, and various related scientific projects. Education Master’s degree with training in toxicology, pharmacology, or related scientific discipline. Requirements Minimum of 8 years of relevant experience. Minimum of 5 years as a Study Director in pharma, biotech, or at a CRO. General toxicology GLP Study Director experience with varied models, routes of administration, and study designs. Demonstrated understanding of 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 and leadership skills Ability to communicate clearly using verbal and written formats, including presentations Preferred GLP Study Director experience with varied modalities (e.g. biologics and small molecule therapeutics) Familiarity with outsourced study monitoring Familiarity with ICH safety guidelines Required Skills: Animal Studies, Effective Written Communication, Evaluate Information, Good Laboratory Practices (GLPs), Oral Communications, Proactive Thinking, Study Directing, Study Monitoring, Teamwork, ToxicologyPreferred Skills: Current Employees apply HERECurrent Contingent Workers apply HEREUS and Puerto Rico Residents Only:Our company is committed to inclusion, ensuring that candidates can engage in a hiring process that exhibits their true capabilities. Please click here if you need an accommodation during the application or hiring process.As an Equal Employment Opportunity Employer, we provide equal opportunities to all employees and applicants for employment and prohibit discrimination on the basis of race, color, age, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability status, or other applicable legally protected characteristics. As a federal contractor, we comply with all affirmative action requirements for protected veterans and individuals with disabilities. For more information about personal rights under the U.S. Equal Opportunity Employment laws, visit:EEOC Know Your RightsEEOC GINA SupplementWe are proud to be a company that embraces the value of bringing together, talented, and committed people with diverse experiences, perspectives, skills and backgrounds. The fastest way to breakthrough innovation is when people with diverse ideas, broad experiences, backgrounds, and skills come together in an inclusive environment. We encourage our colleagues to respectfully challenge one another’s thinking and approach problems collectively.Learn more about your rights, including under California, Colorado and other US State ActsThe salary range for this role is$142,400.00 - $224,100.00This 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 .You can apply for this role through (or via the Workday Jobs Hub if you are a current employee). The application deadline for this position is stated on this posting.San Francisco Residents Only: We will consider qualified applicants with arrest and conviction records for employment in compliance with the San Francisco Fair Chance OrdinanceLos Angeles Residents Only: We will consider for employment all qualified applicants, including those with criminal histories, in a manner consistent with the requirements of applicable state and local laws, including the City of Los Angeles’ Fair Chance Initiative for Hiring OrdinanceSearch Firm Representatives Please Read Carefully Merck & Co., Inc., Rahway, NJ, USA, also known as Merck Sharp & Dohme LLC, Rahway, NJ, USA, does not accept unsolicited assistance from search firms for employment opportunities. All CVs / resumes submitted by search firms to any employee at our company without a valid written search agreement in place for this position will be deemed the sole property of our company. No fee will be paid in the event a candidate is hired by our company as a result of an agency referral where no pre-existing agreement is in place. Where agency agreements are in place, introductions are position specific. Please, no phone calls or emails. Employee Status: RegularRelocation:DomesticVISA Sponsorship:NoTravel Requirements:No Travel RequiredFlexible Work Arrangements:Not ApplicableShift:Not IndicatedValid Driving License:NoHazardous Material(s):N/AJob Posting End Date:09/30/2026*A job posting is effective until 11:59:59PM on the day BEFORE the listed job posting end date. Please ensure you apply to a job posting no later than the day BEFORE the job posting end date. SummaryLocation: USA - Pennsylvania - West PointType: Full time
$178k - $218k
...therapeutics for metabolic dysfunction-associated steatohepatitis (MASH), a serious... ...Pharmaceuticals is seeking an Associate Director, Study Toxicologist to support nonclinical development... ...candidate will support studies across toxicology, pharmacokinetics (PK), ADME, and...SuggestedMinimum wageFull timeContract workLocal areaFlexible hours$142.4k - $224.1k
Job DescriptionAssociate Principal Scientist, Biologics, Sterile Drug Product CommercializationAs... ...products.We are seeking an experienced Associate Principal Scientist to advance and commercialize... ...PPQ), including registration stability study execution, process characterization...PrincipalFull timeFor contractorsLocal areaFlexible hours- ...searching for the best talent for a Principal Scientist, Toxicology in Spring House, PA.Purpose: This Principal... ...of in vivo general toxicology studies for biologics, small molecules, and... ...experience is required.Experience as a Study Director or Study Monitor conducting/...PrincipalFull timeLocal areaFlexible hours
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...to join a highly collaborative team of scientists (12 anatomic pathologists, 3 clinical pathologists... ...accomplished Pathologist with proven toxicological pathology and drug development... ...participating in a wide variety of GLP-toxicology study types, many of which are run in-house,...PrincipalFull timeFor contractorsLocal area$142.4k - $224.1k
...Capabilities organization in West Point, PA is seeking a motivated scientist with technical expertise in mass spectrometry-based protein,... ...design and vaccines pipeline programs. Finally, this Associate Principal Scientist will be a partner in problem solving, building leadership...PrincipalFull timeFor contractorsLocal areaVisa sponsorshipFlexible hours- Charles River is seeking an experienced Study Director to oversee preclinical efficacy and/or toxicology studies, ensuring GLP compliance and timely reporting. You will design study plans, coordinate protocols, and interact with sponsors to align on study costs and schedules...
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...Johnson and Johnson Innovative Medicines is looking for outstanding scientists and leaders whose responsibilities include:Be a hands-on... ...scientists to accelerate project delivery.End-to-end expertise in RWE studies including conceptualizing research questions, data feasibility...PrincipalFull timeLocal areaImmediate start- ...Learn more at are searching for the best talent for a Senior Principal Scientist, Bioanalytical Outsourcing, located in Spring House, PA.... ...appropriate bioanalytical plans are implemented by CRO labs.During study bioanalysis, review data on a daily/weekly basis from CRO...PrincipalFull timeWork experience placementLocal areaWorldwide
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...Learn more at We are searching for exceptional candidates for a Principal Scientist, Spatial Omics, role as part of Multiomics Discovery located... ...building data-generation pipelines, troubleshooting complex studies, and managing CROs and external technology partners to...PrincipalFull timeLocal areaImmediate start- ...Description:Employer: Janssen Research & Development, LLCJob Title: Principal Scientist, BiostatisticsJob Code: A011.4898Job Location: Spring House,... ...to support publications for individual clinical trials/studies/projects. Ensure that documents, specifications, programs,...PrincipalFull timeFor contractorsLocal areaImmediate startRemote work
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...Science, and AI - Global Development (DDSAI GD) is recruiting a Principal Scientist. The ideal candidate will leverage, adapt, and extend machine... ...and patient journey outcomes including enrollment and study completion.Clearly articulate highly technical methods and results...PrincipalFull timeWorldwide$117k - $201.25k
...AmericaJob Description:We are searching for the best talent for our Principal Scientist Clinical Pharmacology & Pharmacometrics position, to be... ...expertise including the design of clinical pharmacology studies and/or clinical pharmacology components of clinical studies,...PrincipalFull timeLocal areaImmediate start- ...Learn more at We are searching for the best talent for a Senior Principal Scientist, Biologics Discovery Process Research (BDPR) Integrator -... ...manufacturability.Designing, interpreting, and integrating studies that assess expression feasibility, cell line performance, upstream...PrincipalFull timeLocal area
- Merck & Co. is seeking a Clinical Imaging Scientist (Principal Scientist) to lead imaging deliverables across 15-25 global clinical trials. This... ...to ensure quality, compliance, and timely milestones from study planning through closeout. The CIS will collaborate with...PrincipalRemote job
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...are searching for the best talent for a Principal Scientist, Animal Genetic Engineering - Antibody... ..., draft detailed engineering and study plans, and secure endorsement from leadership... ...response to overcome the challenges associated with recoveries of conformational and...PrincipalFull timeContract workLocal areaImmediate start- Charles River Laboratories in Horsham, PA is seeking an experienced Study Director to oversee preclinical efficacy and toxicology studies. You will design study plans, schedules, ensure GLP compliance, and coordinate protocols with technical teams. You will prepare reports...
$190.8k - $300.3k
Job DescriptionPrincipal Scientist (Director) in Translational Medicine-Oncology... ...-sight from First-in-Human studies through clinical Proof-of-... ...responsibilities for the Principal Scientist include the... ..., Pharmaceutical Sciences, Toxicology, Translational Biomarkers,...Full timeFor contractorsLocal areaWorldwideFlexible hours$33.65 - $38.46 per hour
...large pharmaceutical client in Spring House, PA is seeking an Associate Scientist to join their growing Cell Therapy Drug Product Development... ...Participate in data analysis of process characterization studies Review, understand, and follow protocols and SOPs Implement...Weekly payContract workShift workDay shift- ...area of interdisciplinary research. Collaboration with modeling scientists, data scientists, IT partners, subject matter experts and... ...prior evidence. Apply the developed pipeline to critical case studies (e.g., RSV vaccine modeling) and rigorously compare AI‑generated...For contractorsRelocationVisa sponsorshipShift work
$173.2k - $272.6k
...a part of our company’s Research Laboratories, is seeking a Principal Scientist to join our department in West Point, PA. Our mission is to... ...developing vaccine adjuvants and drug products from preclinical studies through Phase III clinical trials with a line of sight to...PrincipalFor contractors$117k - $184.2k
Senior Research Scientist (R3) - Biotransformation & Metabolite Identification Location: West... ...conducting targeted in vitro/in vivo studies using sub-cellular fractions, hepatocytes... ...across disciplines (chemistry, biology, toxicology, etc.) to advance project goals....For contractorsRelocationVisa sponsorshipFlexible hoursShift work$173.2k - $272.6k
Job Description The Clinical Imaging Scientist (Principal Scientist) leads complex imaging deliverables... ...areas, supporting programs from study planning through closeout. The CIS supports... ...to support imaging-related questions associated with drug development and regulatory...PrincipalRemote jobFor contractorsLocal areaRelocationVisa sponsorshipFlexible hoursShift work- ...path from lab to life while championing patients every step of the way.Learn more at We are searching for the best talent for a Principal Scientist, High-Content Imaging role as part of Mechanistic & Cellular Pharmacology located in Spring House, PA.Purpose:The ideal...PrincipalFull timeLocal area
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...Johnson & Johnson Innovative Medicine R&D is recruiting for a Principal Scientist, CMC Regulatory Affairs - Combination Products. This... ...management system principles, lifecycle management activities, and associated regulatory requirements.Experience supporting development,...PrincipalFull timeLocal areaImmediate start$117k - $201.25k
...and pioneering the path from lab to life while championing patients every step of the way.Learn more at SummaryThe Principal Scientific Data Scientist will lead the design, implementation, and evolution of scientific data products and integration strategies supporting...PrincipalFull timeLocal areaImmediate start$117k - $201.25k
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...cures, and pioneering the path from lab to life while championing patients every step of the way.Learn more at We are seeking a Principal Scientist, Imaging Analytics to join Interventional Oncology (INTO) and lead the scientific application of medical imaging Artificial...PrincipalFull timeLocal areaImmediate start$87.3k - $137.4k
...highly motivated-individual with strong technical skills and attention to detail to join the Toxicology Operations group. The Operations-group performs in vivo nonclinical safety studies that range in duration from acute (single dose) to chronic (multiple dose up to 2 years)...For contractorsInternshipWork at officeLocal areaRelocationVisa sponsorshipMonday to FridayFlexible hoursShift work- Merck is seeking a Laboratory Scientist in Genetic Toxicology to perform in vitro genotoxicity studies in mammalian cells under GLP conditions, supporting drug discovery and development. The role requires a biology-focused degree with 3+ years of relevant experience, strong...
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