Toxicology Senior Associate
Confirmed on the employer's own hiring board on Nov 11, 2026. First seen by Alion on Nov 9, 2026. Guidehouse scores B on the Alion truth index.
Job Family:
Operational EffectivenessTravel Required:
Up to 10%Clearance Required:
Ability to Obtain Public TrustWhat You Will Do:
Guidehouse is seeking a Toxicology Senior Associate to support federal public health and environmental health programs focused on assessing human health impacts associated with exposure to hazardous substances. The Senior Associate will apply expertise in toxicology, exposure and risk assessment, and statistical analysis to develop scientifically defensible findings and recommendations.
Responsibilities include:
- Apply principles of toxicology, clinical and occupational toxicology, dose-response and exposure assessment, risk characterization, and risk communication to evaluate the potential public health impacts of hazardous substance exposures.
- Analyze toxicological and environmental data associated with hazardous waste sites, including metals, solvents, pesticides, organic contaminants, radiation, and other hazardous substances.
- Develop and support Public Health Assessments (PHAs), health consultations, and related environmental health assessments.
- Evaluate scientific and environmental data for quality, completeness, relevance, and appropriate QA/QC.
- Analyze environmental and public health data using R or comparable statistical software and develop statistical training for technical staff.
- Abstract and synthesize information from PHAs and other scientific documents to support environmental health data and substance-prioritization activities.
- Develop technical documentation and rapidly synthesize scientific information supporting chemical emergency and HAZMAT response.
- Provide technical recommendations regarding actual or potential human exposure to hazardous substances.
- Support technical site visits and public meetings and communicate scientific findings to technical and nontechnical stakeholders.
- Prepare high-quality scientific reports, analyses, briefings, and other client deliverables.
What You Will Need:
- Master’s degree in toxicology, environmental health, exposure science, chemistry, biology, or related field.
- THREE (3) or more years of professional experience in toxicology, human health risk assessment, or a related field, including experience evaluating potential human health impacts associated with hazardous substance exposures.
- Must be able to obtain and maintain a Federal Public Trust; Candidates with an active Public Trust or suitability are preferred.
- Experience applying toxicological or environmental health principles to chemical or hazardous-substance exposure assessments.
- Experience analyzing toxicological, environmental, exposure, or human health data.
- Knowledge of CERCLA, hazardous waste sites, exposure pathways, and human health risk assessment.
- Experience using R or comparable statistical software for scientific or environmental data analysis.
- Strong scientific research, analytical, technical writing, and communication skills.
- Ability to independently execute complex analyses and deliverables while collaborating with multidisciplinary teams and client stakeholders.
What Would Be Nice To Have:
- Doctorate degree in toxicology, exposure science, chemistry, biology, or related field.
- Experience supporting CDC, ATSDR, EPA, or another federal public health or environmental health agency.
- Experience developing or supporting Public Health Assessments (PHAs) or health consultations.
- Experience with hazardous-site assessments, CERCLA-related activities, or environmental exposure investigations.
- Experience developing and delivering R or statistical training.
- Experience supporting chemical emergency response or HAZMAT activities.
- Experience participating in technical site visits, public meetings, or engagements with federal, state, and local agencies.
What We Offer:
Guidehouse offers a comprehensive, total rewards package that includes competitive compensation and a flexible benefits package that reflects our commitment to creating a diverse and supportive workplace.
Benefits include:
Medical, Rx, Dental & Vision Insurance
Personal and Family Sick Time & Company Paid Holidays
Position may be eligible for a discretionary variable incentive bonus
Parental Leave and Adoption Assistance
401(k) Retirement Plan
Basic Life & Supplemental Life
Health Savings Account, Dental/Vision & Dependent Care Flexible Spending Accounts
Short-Term & Long-Term Disability
Student Loan PayDown
Tuition Reimbursement, Personal Development & Learning Opportunities
Skills Development & Certifications
Employee Referral Program
Corporate Sponsored Events & Community Outreach
Emergency Back-Up Childcare Program
Mobility Stipend
About Guidehouse
Guidehouse is an Equal Opportunity Employer-Protected Veterans, Individuals with Disabilities or any other basis protected by law, ordinance, or regulation.
Guidehouse will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements of applicable law or ordinance including the Fair Chance Ordinance of Los Angeles and San Francisco.
If you have visited our website for information about employment opportunities, or to apply for a position, and you require an accommodation, please contact Guidehouse Recruiting at 1-571-633-1711 or via email at [email protected]. All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodation.
All communication regarding recruitment for a Guidehouse position will be sent from Guidehouse email domains including @guidehouse.com or [email protected]. Correspondence received by an applicant from any other domain should be considered unauthorized and will not be honored by Guidehouse. Note that Guidehouse will never charge a fee or require a money transfer at any stage of the recruitment process and does not collect fees from educational institutions for participation in a recruitment event. Never provide your banking information to a third party purporting to need that information to proceed in the hiring process.
If any person or organization demands money related to a job opportunity with Guidehouse, please report the matter to Guidehouse’s Ethics Hotline. If you want to check the validity of correspondence you have received, please contact [email protected]. Guidehouse is not responsible for losses incurred (monetary or otherwise) from an applicant’s dealings with unauthorized third parties.
Guidehouse does not accept unsolicited resumes through or from search firms or staffing agencies. All unsolicited resumes will be considered the property of Guidehouse and Guidehouse will not be obligated to pay a placement fee.