ST

Senior Environmental Risk Assessor

Hiring from
Canada
Work type
Hybrid
Posted
Sep 29, 2026
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Your Opportunity

Stantec is seeking a Senior Risk Assessor to join our Toxicology and Health Risk Assessment team out of one of our Ontario offices (negotiable office location). Our team provides human health and ecological risk assessment services in a variety of sectors, including infrastructure, mining, energy, manufacturing, government, insurance, and commercial real estate. Our group is dedicated to managing environmental issues professionally and proactively. Our staff of professionals includes specialists in contaminant fate and transport, risk assessment, risk management, site remediation, and risk communication.

Our team members have the opportunity to be involved in a variety of projects evaluating human health and ecological concerns associated with contaminants in the environment, identifying risk management measures and providing solutions for our clients to manage their environmental risk.

In this senior role, you will act as a technical leader, project manager, mentor, and trusted advisor to clients and regulators on complex contaminated site projects across Ontario and Canada.

Stantec values work-life balance and is an equal equity employer.

Your Key Responsibilities

  • Lead and manage complex human health and ecological risk assessments in accordance with Ontario Regulation 153/04
  • Act as a Qualified Person for Risk Assessment (QPRA) and provide senior technical oversight and review of risk assessment submissions
  • Lead the preparation of Risk Management Plans (RMPs)
  • Collaborate with Stantec’s Site Investigation and Remediation team on conceptual site models, soil vapour assessments, and meeting regulatory requirements
  • Manage project scope, schedules, budgets, resources, quality, and client expectations
  • Provide mentorship and technical guidance to junior and intermediate risk assessment staff.
  • Represent clients in discussions with regulators, including the Ministry of the Environment, Conservation and Parks (MECP), and other stakeholders

Your Capabilities and Credentials

  • Demonstrated leadership, mentoring, and project management experience
  • Strong understanding of Ontario contaminated sites regulations, risk assessment approvals, risk management plans and brownfield redevelopment
  • Excellent technical writing and oral communication skills
  • Highly organized and self-motivated
  • Excellent problem-solving skills, and ability to work under pressure and within short timelines
  • Proficient with Microsoft Office software suite (Word, Excel, Outlook, PowerPoint, etc.)
  • Valid Ontario driver’s license
  • Ability to obtain federal reliability security clearance

Education and Experience

A bachelor’s or master’s Degree in one of the Environmental Sciences (Toxicology, Biology, Chemistry, Earth Sciences, etc.), Environmental Engineering, or equivalent
Qualified Person for Risk Assessment (QPRA) under O. Reg. 153/04 is required
Qualified Person for Environmental Site Assessment (QPESA) under O. Reg. 153/04 is considered a strong asset
Registered Professional Engineer (P.Eng.) in Ontario is considered a strong asset
Ten (10) to fifteen (15) years of environmental consulting experience with a focus on human health risk assessment, ecological risk assessment, soil vapour assessment, contaminated sites, and risk management planning
Demonstrated experience preparing and implementing Risk Management Plans (RMPs) and supporting redevelopment projects through the Record of Site Condition (RSC) process
Experience managing multidisciplinary project teams, mentoring technical staff, and leading client relationships
Business development, proposal management, and client account experience are considered strong assets

This description is not a comprehensive listing of activities, duties or responsibilities that may be required of the employee and other duties, responsibilities and activities may be assigned or may be changed at any time with or without notice.

About Stantec

Stantec is a global leader in sustainable engineering, architecture, and environmental consulting. The diverse perspectives of our partners and interested parties drive us to think beyond what’s previously been done on critical issues like climate change, digital transformation, and future-proofing our cities and infrastructure. We innovate at the intersection of community, creativity, and client relationships to advance communities everywhere, so that together we can redefine what’s possible.

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