{"id":3976348,"url":"https://alion.io/job/guidehouse-toxicology-senior-associate","title":"Toxicology Senior Associate","company":{"id":4179,"name":"Guidehouse","domain":"guidehouse.com","url":"https://alion.io/company/guidehouse","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":81,"open_postings":140,"ghost_share":0,"stale_share":0.736,"repost_share":0.029,"time_to_fill_p50_days":29,"computed_at":"2026-11-11T05:49:22Z"}},"role":"Biotech","role_family":"Biotech","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Atlanta, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-11-09T18:12:40Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-11T14:38:45Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"Job Family:\nOperational EffectivenessTravel Required:\nUp to 10%Clearance Required:\nAbility to Obtain Public TrustWhat You Will Do:\nGuidehouse 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.\nResponsibilities include:\nApply 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.\nAnalyze toxicological and environmental data associated with hazardous waste sites, including metals, solvents, pesticides, organic contaminants, radiation, and other hazardous substances.\nDevelop and support Public Health Assessments (PHAs), health consultations, and related environmental health assessments.\nEvaluate scientific and environmental data for quality, completeness, relevance, and appropriate QA/QC.\nAnalyze environmental and public health data using R or comparable statistical software and develop statistical training for technical staff.\nAbstract and synthesize information from PHAs and other scientific documents to support environmental health data and substance-prioritization activities.\nDevelop technical documentation and rapidly synthesize scientific information supporting chemical emergency and HAZMAT response.\nProvide technical recommendations regarding actual or potential human exposure to hazardous substances.\nSupport technical site visits and public meetings and communicate scientific findings to technical and nontechnical stakeholders.\nPrepare high-quality scientific reports, analyses, briefings, and other client deliverables.\n What You Will Need:\nMaster’s degree in toxicology, environmental health, exposure science, chemistry, biology, or related field.\nTHREE (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.\nMust be able to obtain and maintain a Federal Public Trust; Candidates with an active Public Trust or suitability are preferred. \nExperience applying toxicological or environmental health principles to chemical or hazardous-substance exposure assessments.\nExperience analyzing toxicological, environmental, exposure, or human health data.\nKnowledge of CERCLA, hazardous waste sites, exposure pathways, and human health risk assessment.\nExperience using R or comparable statistical software for scientific or environmental data analysis.\nStrong scientific research, analytical, technical writing, and communication skills.\nAbility to independently execute complex analyses and deliverables while collaborating with multidisciplinary teams and client stakeholders.\n What Would Be Nice To Have:\nDoctorate degree in toxicology, exposure science, chemistry, biology, or related field.\nExperience supporting CDC, ATSDR, EPA, or another federal public health or environmental health agency.\nExperience developing or supporting Public Health Assessments (PHAs) or health consultations.\nExperience with hazardous-site assessments, CERCLA-related activities, or environmental exposure investigations.\nExperience developing and delivering R or statistical training.\nExperience supporting chemical emergency response or HAZMAT activities.\nExperience participating in technical site visits, public meetings, or engagements with federal, state, and local agencies.\n What We Offer:\nGuidehouse 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.\nBenefits include:\nMedical, Rx, Dental & Vision Insurance\n\nPersonal and Family Sick Time & Company Paid Holidays\n\nPosition may be eligible for a discretionary variable incentive bonus\n\nParental Leave and Adoption Assistance\n\n401(k) Retirement Plan\n\nBasic Life & Supplemental Life\n\nHealth Savings Account, Dental/Vision & Dependent Care Flexible Spending Accounts\n\nShort-Term & Long-Term Disability\n\nStudent Loan PayDown\n\nTuition Reimbursement, Personal Development & Learning Opportunities\n\nSkills Development & Certifications\n\nEmployee Referral Program\n\nCorporate Sponsored Events & Community Outreach\n\nEmergency Back-Up Childcare Program\n\nMobility Stipend\n\nAbout Guidehouse\nGuidehouse is an Equal Opportunity Employer-Protected Veterans, Individuals with Disabilities or any other basis protected by law, ordinance, or regulation.\nGuidehouse 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.\nIf 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 . All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodation.\nAll communication regarding recruitment for a Guidehouse position will be sent from Guidehouse email domains including @guidehouse.com or . 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.\nIf 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 . Guidehouse is not responsible for losses incurred (monetary or otherwise) from an applicant’s dealings with unauthorized third parties.\nGuidehouse does not accept unsolicited resumes through or from search firms or staffing agencies. 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