Environmental Risk Assessor/Toxicologist

Company: Cherokee Federal
Location: San Antonio
Posted on: April 2, 2026

Job Description:

Environmental Risk Assessor/Toxicologist A government contract requires that this position be restricted to U.S. citizens or legal permanent residents. You must provide documentation that you are a U.S. citizen or legal permanent resident to qualify. Provide toxicology, hazard assessment, epidemiology, risk assessment, exposure assessment, and related support that addresses the full spectrum of potentially hazardous agents with a primary focus on Per- and polyfluoroalkyl substances (PFAS). Compensation & Benefits: Estimated Starting Salary Range for Environmental Risk Assessor/Toxicologist : $90,000 to $100,000 Pay commensurate with experience. Full time benefits include Medical, Dental, Vision, 401K, and other possible benefits as provided. Benefits are subject to change with or without notice. Environmental Risk Assessor/Toxicologist Responsibilities Include: Provide A&AS technical support for environmental restoration projects conducted under CERCLA and/or RCRA, including BRAC-related restoration activities. Support scoping and planning for RI/FS efforts, including participation in meetings and development of inputs to define data needs to support risk assessments (e.g., DQO discussions). Develop, review, and contribute to technical deliverables and supporting materials, including portions of: Conceptual Site Models (CSM) Sampling and analysis planning inputs (e.g., SAP) and quality documentation inputs (e.g., QAPP-related content, as applicable) Human Health Risk Assessments (HHRA) and Ecological Risk Assessments (ERA) Exposure pathway evaluations, toxicity assessments, uncertainty analyses, and identification of key data gaps Responses to client and regulator comments on technical documents, as directed Perform exposure and toxicity evaluations and support quantitative risk characterization for chemicals, including PFAS, across soil, groundwater, surface water, and other media. Conduct structured literature searches and evidence synthesis to support hazard conclusions, including: study screening, data extraction, documentation of methods, and evaluation of study quality/risk of bias using structured approaches appropriate to the project. Critically review and analyze scientific studies and project datasets; conduct statistical/environmental data evaluations using common tools (e.g., ProUCL or equivalent) and document methods and assumptions clearly. Coordinate professionally with AFCEC stakeholders and project teams; support technical briefings and presentations to government personnel and other stakeholders. Support interactions with state and federal environmental regulatory agencies by preparing technical support content and participating in meetings as requested. Maintain strong documentation discipline, support internal technical reviews, and contribute to continuous improvement of technical quality Performs other job-related duties as assigned Environmental Risk Assessor/Toxicologist Experience, Education, Skills, Abilities requested: Education/experience meeting one of the following: Bachelor’s degree in toxicology, pharmacology, biochemistry, molecular biology, environmental health, or a related scientific discipline and 5 years of relevant experience; or Master’s degree in a related scientific discipline and 3 years of relevant experience. Relevant experience supporting environmental restoration work under CERCLA and/or RCRA that includes risk assessment, toxicology, exposure assessment, and/or hazard assessment deliverables. Demonstrated ability to produce and edit clear, defensible technical writing (reports, memoranda, deliverable sections, and briefings). Proficiency with Microsoft Office (Excel, Word, PowerPoint). Ability to manage multiple tasks, meet deadlines, and coordinate effectively with distributed teams Strong analytical skills and attention to detail; ability to clearly document assumptions, uncertainties, and limitations. Practical understanding of exposure pathways, toxicity values, weight-of-evidence concepts, and uncertainty characterization. Strong written and verbal communication skills for client-facing coordination and stakeholder briefings. Organized, deadline-driven, and comfortable working in a fast-paced environment. Must pass pre-employment qualifications of Cherokee Federal Company Information: Cherokee Nation Strategic Programs (CNSP) is a part of Cherokee Federal – the division of tribally owned federal contracting companies owned by Cherokee Nation Businesses. As a trusted partner for more than 60 federal clients, Cherokee Federal LLCs are focused on building a brighter future, solving complex challenges, and serving the government’s mission with compassion and heart. To learn more about CNSP , visit cherokee-federal.com. CherokeeFederal LI-WD1 LI-REMOTE AppC Cherokee Federal is a military friendly employer. Veterans and active military transitioning to civilian status are encouraged to apply. Similar searchable job titles: Environmental Health Risk Assessor Environmental Toxicologist Human Health Risk Assessment Specialist Environmental Exposure Scientist Environmental Health Scientist Keywords: Toxicology Risk Assessment Environmental Health Exposure Analysis Regulatory Compliance Legal Disclaimer: All qualified applicants will receive consideration for employment without regard to protected veteran status, disability or any other status protected under applicable federal, state or local law. Many of our job openings require access to government buildings or military installations.

Keywords: Cherokee Federal, San Marcos , Environmental Risk Assessor/Toxicologist, Science, Research & Development , San Antonio, Texas