Senior Toxicologist – Job Description

Job Title: Senior Toxicologist
Department: Toxicology / Research & Development / Product Safety
Reports To: Director of Toxicology or Head of Regulatory Affairs
Location: Philladelphia, PA
Employment Type: Full-time

Position Summary

We are seeking an experienced and detail-oriented Senior Toxicologist to lead toxicological risk assessments, safety evaluations, and regulatory compliance activities for chemicals, pharmaceuticals, consumer products, or environmental substances. The ideal candidate will provide scientific expertise in toxicology, support product development and regulatory submissions, and ensure compliance with national and international safety standards.

Key Responsibilities

Conduct toxicological risk assessments for raw materials, formulations, products, and environmental exposures.
Review and interpret toxicological, pharmacological, and epidemiological data.
Prepare safety assessments, hazard evaluations, and exposure analyses.
Provide scientific guidance for product development, regulatory strategy, and labeling requirements.
Author and review technical reports, safety dossiers, and regulatory submissions.
Ensure compliance with applicable regulations and guidelines (e.g., OECD, EPA, FDA, REACH, GLP, OSHA).
Collaborate with cross-functional teams including R&D, Quality, Regulatory Affairs, Clinical, and Manufacturing.
Monitor emerging toxicology research, industry trends, and regulatory updates.
Support audits, inspections, and responses to regulatory agencies.
Mentor junior scientists and contribute to scientific training initiatives.
Participate in external scientific meetings, conferences, and professional organizations.

Required Qualifications

Ph.D. or Master’s degree in Toxicology, Pharmacology, Biochemistry, Environmental Health, or related scientific field.
8+ years of relevant toxicology experience in industry, consulting, academia, or regulatory environments.
Strong knowledge of toxicological principles, risk assessment methodologies, and regulatory frameworks.
Experience with regulatory submissions and compliance documentation.
Excellent analytical, scientific writing, and communication skills.
Ability to manage multiple projects and work collaboratively across departments.
Proficiency in scientific literature review and data interpretation.

Preferred Qualifications

Board certification such as DABT (Diplomate of the American Board of Toxicology) preferred.
Experience in pharmaceutical, chemical, cosmetics, food safety, or environmental toxicology.
Familiarity with computational toxicology, QSAR models, or in vitro testing methods.
Experience leading teams or managing scientific projects.

Key Competencies

Scientific and analytical expertise
Critical thinking and problem-solving
Attention to detail
Regulatory knowledge
Project management
Leadership and mentoring
Effective written and verbal communication

Compensation & Benefits

Competitive salary package
Health and wellness benefits
Performance bonuses
Professional development opportunities
Retirement and insurance benefits
Flexible work arrangements

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Senior Toxicologist