AECOM is seeking an experienced and motivated full-time Human Health Risk Assessor to become an integrated member of AECOM's risk assessment and remediation practices. The location of this position is flexible and may be either in-office or remote. In this role, your responsibilities will include: • Supporting a wide range of projects for private and government clients throughout the U.S. (and internationally). • Performing and reviewing ecological risk assessments in accordance with regulatory guidance and project-specific work plans. • Developing Risk Assessment Work Plans and contributing to Sampling and Analysis Plans/Quality Assurance Project Plans. • Successfully coordinating with internal project teams, including delegating to junior staff. • Preparing technical deliverables; including writing reports and performing/reviewing risk assessment calculations. • Contributing to proposals and business development, including developing scopes of work and cost estimates for ecological risk assessment. • Mentoring/developing more junior staff. • Maintaining knowledge of federal and state regulations/guidance documents for conducting risk assessments. • Maintaining work quality, quantity, and efficiency at or above company standards. • Must be willing to perform occasional field work, as needed. Qualifications Minimum Qualifications: • BA/BS degree in Ecotoxicology, Ecology, Zoology, Environmental Science/Studies, Chemistry, Toxicology, Biology or other related area AND 6+ years of experience performing ecological risk assessments in an environmental consulting setting, or demonstrated equivalence of education and experience. • Due to the nature of work, US Citizenship is required. • Valid Driver's License and as a condition of employment must be able to pass AECOM's Motor Vehicle Records review and background check. Preferred Qualifications: • Master's or PhD degree in Ecotoxicology, Ecology, Zoology, Environmental Science/Studies, Chemistry, Toxicology, Biology, Zoology, or other related area. • Applied knowledge of USEPA guidance for conducting ecological risk assessment. • Excellent technical writing and communication skills. • Experience conducting food web/bioaccumulation assessments. • Experience performing data analysis and applied statistics. • Excellent technical writing and communication skills. • Proficiency in Microsoft Excel and Word. • Experience evaluating PFAS, PCBs, and lead. • CERCLA experience with Remedial Investigations, Feasibility Studies, and ROD development. • Site investigation and field sampling and wildlife assessment experience. • Experience working on Navy or Department of Defense. • Experience dealing with the Hawaii Department of Health and EPA Region 9 • Experience working with projects in Hawaii, Guam and other Pacific Islands • Preferred work location Hawaii. • Experience performing wildlife assessments. Additional Information • THIS POSTING IS FOR A CURRENT VACANCY, AND AECOM INTENDS TO FILL THIS POSITION BY SEPTEMBER 6TH, 2026. At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment. AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan.