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Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

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.

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.

About AECOM 

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. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. 

What makes AECOM a great place to work 

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community—where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.