Toxicologist, Risk Assessment at McKinney… · Richmond

About McKinney Regulatory Science Advisors

McKinney Regulatory Science Advisors (MRSA) helps clients thrive in a regulated environment by providing regulatory, scientific and stakeholder engagement leadership. We are passionate about guiding companies of all sizes successfully through every step of a complex regulatory process.

At McKinney Regulatory Science Advisors, we’re not just shaping the future of nicotine product testing; we’re creating a workplace where talented professionals can grow and thrive. We offer competitive compensation and a comprehensive benefits package, including medical, dental, and vision insurance, as well as a 401(k)-retirement plan.

Position Summary

McKinney Regulatory Science Advisors (MRSA) is seeking a highly skilled and motivated Toxicologist specializing in Risk Assessment to support scientific and regulatory consulting initiatives. This position will provide technical expertise in toxicology, human health risk assessment, and regulatory science to evaluate the potential health effects associated with chemical substances, consumer products, and environmental exposures.

The ideal candidate will have a strong scientific background, experience interpreting toxicological data, and the ability to translate complex scientific findings into clear, defensible risk assessments and regulatory recommendations. This individual will collaborate with multidisciplinary teams and clients to support regulatory submissions, scientific evaluations, and evidence-based decision-making.

Essential Job Functions

• Conduct comprehensive toxicological evaluations and human health risk assessments to characterize potential hazards and health risks associated with chemical substances, ingredients, and consumer products.
• Provide scientific expertise and technical guidance to support regulatory strategies, client deliverables, and the development of scientifically sound risk assessment methodologies.

Essential Responsibilities

• Conduct human health risk assessments for chemicals, ingredients, and finished products using established risk assessment methodologies.
• Perform hazard identification, dose-response evaluations, exposure assessments, and risk characterization.
• Identify and interpret toxicological health guidance values (e.g., ADIs, RfCs, TTCs, PDEs, MOEs).
• Calculate quantitative risk metrics including margins of exposure (MOE), margins of safety (MOS), hazard quotients (HQ), and lifetime cancer risk (ELCR), as appropriate.
• Review and interpret analytical chemistry and toxicology data to determine toxicological significance.
• Conduct literature reviews and summarize scientific findings from published studies and regulatory sources.
• Data visualization.
• Prepare technical reports, regulatory documents, meeting decks, and client deliverables.
• Assist with regulatory submissions and scientific support for clients.
• Collaborate with toxicologists, chemists, and project managers to develop scientifically defensible recommendations.
• Maintain awareness of current scientific literature, regulatory guidance, and emerging toxicological issues.
• Other duties as assigned.

Qualifications

• Master's or PhD degree in Toxicology, Biology, Public Health, Environmental Health, or another related scientific discipline.
• 3+ years of relevant experience in risk assessment, toxicology, regulatory science, or a related scientific field.
• Basic understanding of human health risk assessment principles, with enthusiasm for developing expertise in quantitative risk assessment, toxicology, and regulatory science.
• Experience reviewing scientific literature and interpreting technical data.
• Strong analytical, organizational, and problem-solving skills.
• Excellent written and verbal communication skills.
• Proficiency with Microsoft Office (Word, Excel, and PowerPoint).

Preferred Qualifications

• Experience in preparing technical reports or regulatory documents.
• Familiarity with toxicological databases and publicly available regulatory resources.
• Familiarity with human health-related toxicological endpoints (e.g. genotoxicity; carcinogenicity; sensitization; irritation; and respiratory, reproductive, developmental, repeated-dose, and cardiovascular toxicities).
• Experience performing or interpreting in silico evaluations.
• Experience interpreting analytical chemistry or toxicology data.
• Working knowledge of FDA, EPA, or other regulatory guidance.
• Interest in ingredient and consumer product safety assessments.
• Proficiency with GraphPad Prism.

The above statements are intended to describe the general nature of work being performed by people assigned to this classification. They are not to be construed as an exhaustive list of all responsibilities, duties and skills required of employees so classified.

We believe in transparent compensation practices. The expected salary range for this position is $80,000.00 – $110,000.00 per year. Starting pay will be based on the candidate's qualifications, experience, and the requirements of the role.

Application Process

McKinney Regulatory Science Advisors is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. McKinney Regulatory Science Advisors does not discriminate in hiring or employment practices based on race, color, religion, gender, age, sexual orientation, marital or familial status, national origin, non-job-related disability, or status as a veteran.

If you are looking to make an impact in a dynamic and visionary company, we invite you to apply for this opportunity at McKinney Regulatory Science Advisors.