Principal Toxicology Scientist & Leader

Exponent Inc.; Washington (District of Columbia); On-site; USD 200,000 - 300,000; Full time

Benefits offered by this job

401(k) employer contribution

Career growth opportunities

Job summary

Exponent Inc. in Washington, DC is seeking a Principal Scientist (Toxicology) to lead projects in toxicology, risk assessment, and regulatory strategy within the Health Sciences Practice.

The role involves mentoring staff, expanding client relationships, and delivering data-driven insights across diverse product categories. The ideal candidate brings 10+ years in toxicology leadership, a DABT certification, and a track record of securing new business, with strong communication and

Qualifications

• PhD in Toxicology or related field.
• 10+ years of consulting or leadership experience in toxicology.
• DABT certification.
• Experience with PFAS and emerging chemicals.
• Strong communication and data analysis skills.
• Proven business development and client relationships.
• Ability to lead multidisciplinary teams.
• Commitment to professional development.

Responsibilities

• Lead projects in toxicology, risk assessment, and product stewardship.
• Identify, pursue, and secure new client engagements.
• Maintain and grow trusted client relationships.
• Build and empower multidisciplinary teams with scientific integrity.
• Provide guidance and staff development opportunities.
• Ensure project execution with planning, resources, and budgets.
• Offer regulatory expertise on PFAS and chemicals.
• Publish and present as part of thought leadership.
• Increase firm visibility through industry engagement and seminars.

Skills

Toxicology leadership

Business development

Client management

DABT certification

Regulatory strategy

PFAS knowledge

Thought leadership

Team mentoring

Regulatory compliance

Education

PhD in Toxicology or related field

Job description

Exponent Inc. in Washington, DC is seeking a Principal Scientist (Toxicology) to lead projects in toxicology, risk assessment, and regulatory strategy within the Health Sciences Practice.

The role involves mentoring staff, expanding client relationships, and delivering data-driven insights across diverse product categories. The ideal candidate brings 10+ years in toxicology leadership, a DABT certification, and a track record of securing new business, with strong communication and