Principal Environmental Risk Assessor

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Principal Environmental Risk Assessor leading toxicology and ecological risk assessment projects at Geosyntec. Driving project delivery and client engagement across public and private sectors.

Posted 6/5/2026full-timeOakland • California • 🇺🇸 United StatesLead💰 $156,115 - $218,560 per yearWebsite

About the role

Key responsibilities & impact

Lead and manage complex ERA and HHRA projects under CERCLA, RCRA, state-led cleanup programs, and redevelopment frameworks
Serve as a senior technical resource in toxicology, exposure assessment, fate and transport, conceptual site model development, and risk-based cleanup strategy
Provide strategic guidance to clients on complex contaminants and emerging issues
Build and maintain strong relationships with existing and prospective clients, regulatory agencies, and other stakeholders
Develop business opportunities with new and existing clients
Direct multidisciplinary teams in site investigation, remedial investigation/feasibility study support
Ensure technical excellence and quality on deliverables
Mentor and develop staff in risk assessment methods
Contribute to Geosyntec’s thought leadership through publications and engagement in industry initiatives

Requirements

What you’ll need

Bachelor’s degree in toxicology, environmental science, biology, chemistry, public health, environmental engineering, or a related scientific discipline (required)
Advanced degree (M.S. or Ph.D.) in toxicology, environmental health, risk assessment, ecology, or a related discipline (preferred)
At least 10 years of direct environmental consulting experience in toxicology, ecological risk assessment, and/or human health risk assessment, or an equivalent combination of education and experience (required)
Strong working knowledge of federal and state regulatory programs, including USEPA, CalEPA, CERCLA, RCRA, and state cleanup frameworks (required)
Demonstrated expertise in developing and managing ERA and HHRA projects (required)
Excellent technical leadership of multidisciplinary project teams (required)
Strong written and verbal communication skills (required)
Health & Safety training, medical monitoring, and client-driven drug and background testing may be required (required)
Valid U.S. driver’s license and a satisfactory driving record for business travel (required)

Benefits

Comp & perks

competitive pay and benefits
well-being programs to support you and your family

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

toxicologyexposure assessmentfate and transportconceptual site model developmentrisk-based cleanup strategyenvironmental consultingecological risk assessmenthuman health risk assessmentERA project managementHHRA project management

Soft Skills

technical leadershiprelationship buildingstrategic guidancementoringcommunication

Certifications

Bachelor’s degreeM.S. or Ph.D. in toxicologyHealth & Safety training