Environmental Risk Assessor

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.

Job Description

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.

Job Description

AECOM is seeking an intermediate environmental risk assessor to join our Canada Remediation team. This role supports the delivery of high‑quality human health and ecological risk assessments across remediation projects in Canada, working under the guidance of senior technical leaders and project managers.

The successful candidate will contribute strong technical expertise, support junior staff, and collaborate with multidisciplinary teams to deliver defensible, regulator‑ready risk assessments that support site remediation and regulatory compliance.

 

Technical Delivery & Collaboration

• Perform and support risk assessments from preliminary screening through detailed assessment stages.

• Develop and refine conceptual site models , identify exposure pathways, and evaluate receptors.

• Apply Canadian and provincial regulatory risk assessment guidance (human health and ecological).

• Collaborate with toxicologists, ecologists, biologists, engineers, and project managers to support integrated project delivery.

• Translate technical risk findings into clear, concise documentation for internal and external audiences.

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Project Support

• Support project managers with scope development, schedules, and budgets.

• Prepare technical content for reports, figures, tables, and appendices.

• Ensure work meets quality standards and regulatory requirements.

• Participate in client and regulator interactions as a technical contributor.

Mentorship & Team Collaboration

• Provide day to day technical guidance and informal mentoring to junior staff.

• Contribute to a collaborative, technically strong team culture.

• Support knowledge sharing and continuous improvement within the team.

 

Technical Expertise

• Apply practical, fit‑for‑purpose approaches to scope and analysis.

• Ecological Risk Assessment:

  • Support design, evaluation, and interpretation of toxicity, bioaccumulation and ecological exposure studies.

  • Apply media‑specific screening criteria and weight‑of‑evidence approaches.

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  • Human Health Risk Assessment:

    • Evaluate exposure scenarios, dose‑response relationships, and hazard characterization.

    • Support incorporation of emerging contaminants into risk assessments.

Qualifications

Minimum

Qualifications

• B.Sc. in Toxicology, Biological Sciences, Environmental Science, Ecology, Public Health, or related discipline; Master's is preferred

• Professional designation (or eligibility) in a Canadian province.

• Minimum of 4 years of relevant environmental consulting experience including experience conducting complete risk assessments as well as indoor air and soil vapour intrusion assessments.

• Demonstrated experience supporting or leading components of risk assessments.

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Preferred

Qualifications

• 7-12 years of relevant environmental consulting experience including experience conducting complete risk assessments as well as indoor air and soil vapour intrusion assessments.

• Experience working within multidisciplinary remediation teams.

• Ability to independently complete defined risk assessment tasks with minimal oversight.

• Interest in continued technical growth toward senior or discipline‑focused roles.

• Strong technical writing skills for regulatory submissions and technical reports.

• Working understanding of Canadian regulatory frameworks.

• Effective communication and teamwork skills.

• Valid Driver’s License.

Additional Information

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. Artificial intelligence will be used to support the screening, assessment, and selection of applicants for this role. Final hiring decisions are made by the hiring team.