Principal Consulting Toxicologist

About the role

J.S. Held is seeking a Principal Toxicologist to play a leadership role within our Health Sciences practice, supporting complex litigation, regulatory, and advisory engagements.

Responsibilities

• Lead, mentor, and develop a team of toxicologists across multiple projects and geographies
• Ensure scientific rigor, quality assurance, and defensibility across all deliverables
• Foster a collaborative, high-performance team culture aligned with J.S. Held’s consulting standards
• Provide oversight and guidance on complex, high-profile engagements
• Serve as a consulting and testifying expert in litigation, arbitration, and regulatory matters
• Lead and deliver toxicological risk assessments, exposure assessments, and product safety evaluations
• Interpret complex toxicological, epidemiological, and exposure data to generate clear, defensible opinions
• Support mass torts, environmental exposure cases, product liability matters, and occupational health disputes
• Translate scientific findings into clear, persuasive insights for legal counsel, regulators, and corporate stakeholders
• Originate, grow, and maintain client relationships across legal, corporate, and regulatory sectors
• Contribute to and expand a portable book of business, meeting or exceeding revenue targets
• Lead business development activities, including opportunity identification, scoping, pricing, and proposal development
• Partner with cross-functional experts (e.g., epidemiology, industrial hygiene, environmental science) to deliver integrated solutions
• Support the growth and expansion of toxicology services across the U.S. and international markets
• Collaborate with multidisciplinary teams to integrate toxicology into broader disputes, investigations, and compliance offerings
• Contribute to thought leadership, including publications, conference presentations, and client briefings
• Represent J.S. Held at industry events, expert forums, and networking opportunities

Qualifications

• PhD in Toxicology, Pharmacology, Environmental Health, or a related discipline
• ~15+ years of professional experience, including significant time in consulting and leadership roles
• Demonstrated experience serving as a testifying expert, including preparation of expert reports and participation in depositions and/or trial testimony
• Deep expertise in toxicological risk assessment, chemical exposure, and human health impact analysis
• Strong understanding of global regulatory frameworks (e.g., REACH, CLP, EPA, OSHA, and related regimes)
• Proven seller-doer track record, including business development, client relationship management, and revenue delivery
• Exceptional communication skills, with the ability to present complex scientific concepts to legal, technical, and executive audiences

Benefits

• Flexible work environment allowing employees to work remotely
• Medical, Dental, and Vision Insurance
• 401k Match

Additional Information

A reasonable estimate of the base salary range for this role is $150,000 - $300,000. Any offered salary range is based on a wide array of factors including but not limited to skillset, experience, training, location, scope of role, management responsibility, etc.

In addition to base salary, J.S. Held offers a variety of annual bonus programs. Eligibility and details for these bonus schemes will be discussed during the interview process.