Senior Toxicologist

Groenakker, LLC; Pennsylvania; On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Health and wellness benefits

Performance bonuses

Professional development opportunities

Retirement and insurance benefits

Flexible work arrangements

Job summary

Groenakker, LLC invites applications for a Senior Toxicologist to lead toxicological risk assessments, safety evaluations, and regulatory activities across chemicals, pharmaceuticals, consumer products, and environmental substances. The role emphasizes scientific leadership, regulatory compliance, and collaboration with R&D and Quality teams.

The successful candidate will provide expert toxicology input for product development, submissions, and labeling, while mentoring junior scientists and

Qualifications

• PhD or master's degree in a relevant field
• 8+ years of toxicology experience in industry, consulting, academia, or regulatory environments
• Strong knowledge of toxicology, 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 across departments
• Proficiency in literature review and data interpretation

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 OECD, EPA, FDA, REACH, GLP, OSHA
• Collaborate with 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

Skills

Analytical thinking

Scientific writing

Communication skills

Regulatory knowledge

Project management

Leadership

Cross-functional collaboration

Data interpretation

Education

PhD or Master’s in Toxicology/Pharmacology/Biochemistry/Env Health

Job description

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