Senior Hydrogeologist

Hydrogeologist (QPESA)

Location:

Guelph, Ontario
Work Model:  Hybrid (office- and site-based)

About the Opportunity
A well‑established environmental consulting firm is seeking a  Qualified Professional – Environmental Site Assessment (QPESA) Hydrogeologist  to support and lead contaminated site investigations across Ontario. This opportunity is ideal for an experienced intermediate to senior hydrogeologist with a strong background in Phase I and Phase II Environmental Site Assessments (ESAs), contaminated site remediation, and Ontario environmental regulations.

The successful candidate will be authorized to review, sign, and seal contaminated site reports and will provide technical leadership on projects involving groundwater characterization and mitigation, particularly within downstream oil & gas and retail fuel (gas station) environments.

Key Responsibilities

Act as a QPESA for Environmental Site Assessments in accordance with Ontario regulations

Review, approve, and sign Phase I and Phase II ESA reports

Lead and contribute to contaminated site investigations, including:

Soil and groundwater assessments

Site characterization and delineation

Risk evaluation and mitigation strategies

Provide technical oversight and mentorship to junior and intermediate staff

Liaise with regulators, clients, and project stakeholders

Conduct and/or oversee field programs, including groundwater monitoring, sampling, and data interpretation

Support remediation planning and regulatory closure strategies

Ensure compliance with provincial standards and reporting requirements

Qualifications & Experience

QPESA designation (required) with demonstrated authority to sign contaminated site reports

Background as a Physical Hydrogeologist

Typically 8–15+ years of progressive experience in environmental consulting

Strong contaminated sites experience, preferably within:

Downstream oil & gas

Retail fuel / gas station sites

Industrial or commercial properties

Proven experience with Phase I and Phase II ESAs

Solid working knowledge of Ontario environmental regulations related to contaminated sites

Groundwater modeling experience is considered an asset but is not required

P.Geo designation preferred; QPESA status is essential

What We’re Looking For

A confident professional who understands the responsibility and accountability associated with QPESA signatory authority

A pragmatic, solutions‑oriented approach with strong regulatory judgment

Comfort working in both office and field environments

Strong technical writing, report‑review, and client‑facing communication skills

Compensation & Benefits

Compensation:
Flexible and commensurate with experience and seniority

Hybrid work model (office and site-based)

Opportunity to step into a senior technical role within a respected environmental consulting firm

Supportive team environment with opportunities for continued professional growth

We are an equal opportunity employer. All qualified individuals will receive consideration for employment without regard to race; color; age; sex; sexual orientation; gender identity; religion; national origin; disability; veteran status; genetic information; or any other criteria protected by governing law.

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