Principal Scientist, Toxicology & Strategy

Exponent; Washington; On-site; USD 200,000 - 300,000; Full time

Job summary

Exponent seeks a Principal Scientist (Toxicology) to lead high‑level toxicology projects in our Health Sciences Practice in Washington, DC. You will guide risk assessments, data science applications, and regulatory analyses for diverse products and chemicals, while expanding client engagements and mentoring technical staff.

The role requires a PhD in Toxicology, a DABT, 10+ years in consulting/leadership, and a strong track record in business generation, client relations, and strategic advisory.

Qualifications

• PhD in Toxicology or related field.
• Minimum of 10 years of consulting or leadership experience in toxicology.
• Proven track record of business generation and attracting new and repeat clients or funding.
• Diplomate of the American Board of Toxicology (DABT).
• Experience supporting product stewardship, chemical management, regulatory strategy, sustainability initiatives, or related programs involving PFAS and other emerging chemicals of concern.
• Exceptional verbal and written communication skills, with the ability to articulate complex ideas clearly and persuasively to diverse audiences.
• Strong analytical and problem‑solving skills, with the ability to interpret data, identify trends, and make informed recommendations in your scientific field.
• Outstanding reputation among clients and the scientific community for integrity, responsiveness, and technical expertise.
• Adept people management abilities coupled with extensive experience in successfully overseeing and executing complex projects.
• Strong commitment to professional development.

Responsibilities

• Lead projects and teams with a focus on toxicology or related health sciences.
• Identify, pursue, and secure new client engagements and expand relationships.
• Mentor and develop technical staff, contributing to leadership development.
• Provide strategic toxicology, product stewardship, and regulatory guidance across chemicals and emerging issues (PFAS).
• Oversee project planning, resource allocation, and budget management to ensure timely delivery.
• Publish and present to enhance firm visibility and thought leadership.
• Develop business in health sciences areas and related practice growth.
• Advise internal stakeholders and clients on data-driven risk communication and decision making.
• Support client impact through high-quality scientific and strategic contributions.

Skills

Leadership

BD/Client relations

Communication

Analytical skills

Toxicology

Project management

Education

PhD in Toxicology

DABT

Job description

Exponent seeks a Principal Scientist (Toxicology) to lead high‑level toxicology projects in our Health Sciences Practice in Washington, DC. You will guide risk assessments, data science applications, and regulatory analyses for diverse products and chemicals, while expanding client engagements and mentoring technical staff.

The role requires a PhD in Toxicology, a DABT, 10+ years in consulting/leadership, and a strong track record in business generation, client relations, and strategic advisory.