Senior Environmental Scientist

Job Description

Company Description

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

The Remediation team in Kitchener, Markham, or Mississauga is seeking a Senior Environmental Scientist for a new position to serve as a technical resource for federally and/or provincially regulated projects in Ontario. This role offers an exciting opportunity to lead diverse projects, including contaminated site assessment/remediation, regulatory closure pursuits, and excess soil management. The successful candidate will collaborate closely with project managers, senior technical leads, and other AECOM business lines to achieve project success and deliver on AECOM’s promise to our client.

Key Responsibilities

• Undertake or provide technical direction and mentoring for contaminated site assessment, excess soil, risk-based closure including the development of site-specific guidelines through pathway elimination or risk assessments in accordance with federal or provincial guidelines.


• Technical writing and/or report review (e.g., risk management plans, remedial action plans, assessment of past uses (APUs), site characterization, groundwater sampling, Phase I/II ESAs)


• Development of work scopes and proposals.


• Act as a technical lead on excess soil projects for other AECOM business lines.


• Collaboration with a variety of technical experts including hydrogeologists, risk assessors, and senior technical leads to advance contaminated sites to regulatory closure.


• Ability to mentor junior and intermediate professionals.

Minimum Requirements

• 8+ years of relevant experience in environmental consulting with a bachelor’s degree in environmental science, engineering, or related fields.

Preferred Qualifications

• Demonstrated ability to independently manage complex technical tasks and mentor others.


• Strong leadership, project management, and client communication skills.


• Knowledge of current federal and provincial legislation (e.g., Canadian Energy Regulator (CER), CCME, O. Reg. 153/04 and 406/19) and risk assessment guidance.


• Experience working with Oil & Gas clients or with the CER on mid-stream remediation or closure projects would be considered an asset.


• Membership in a relevant professional organization such as APGO or PEO.

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 2024. 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.