About Us

At Onterris, we build careers grounded in purpose, responsibility and real-world impact. “For Planet and Progress” is our north star that guides everything we do. We believe environmental responsibility and human progress are interconnected, interwoven and international. Our scientists, engineers, field teams, consultants and professionals collaborate across disciplines and geographies, guiding industries and governments, ensuring that communities and environments thrive. When you join us, you’re not just forging a career, you’re joining a movement. A movement for better thinking, smarter solutions and lasting impact. Together, we will advance our way of life and protect the integrity of our workplace every step of the way. A movement for better thinking, smarter solutions and lasting impact.

A Day in the Life

As an Intermediate Geoscientist within our Groundwater, Mining & Infrastructure Team, based out of our Guelph or Oakville, Ontario office, you will support groundwater resource, mine water management, environmental permitting, infrastructure dewatering, and hydrogeological characterization projects for clients across Canada. You will contribute technical expertise to groundwater investigations, aquifer testing, dewatering assessments, mine closure planning, water management planning, and regulatory approvals throughout the project lifecycle, from planning and environmental assessment through construction, operations, and closure. The compensation range for this role is $35.00 to $45.00, commensurate with experience, skills, and geographic location

To thrive in this role, you’ll be comfortable taking ownership of the following responsibilities:

- Design and execute hydrogeological investigations including drilling programs, monitoring well installation, groundwater sampling, slug testing, and pumping tests.
- Conduct groundwater resource evaluations, groundwater impact assessments, hydrogeological conceptual model development, and water balance assessments.
- Support water supply investigations and water taking (PTTW) applications.
- Contribute to water balance modeling and water management plans for active and closed mine sites
- Support environmental assessment and permitting work under the federal Impact Assessment Act, provincial Environmental Assessment Act processes, and Environmental Compliance Approvals (ECAs)
- Support construction and infrastructure dewatering assessments, groundwater inflow evaluations, and discharge management programs.
- Assist with Fisheries Act and Metal and Diamond Mining Effluent Regulations (MDMER) compliance monitoring and reporting
- Support field programs including groundwater and surface water monitoring,



soil and rock sampling, and geotechnical/hydrogeological drilling oversight
- Prepare technical reports, permit applications, and regulatory submissions for mining, infrastructure, municipal, and industrial clients.
- Liaise with clients, regulators, contractors, and Indigenous communities on environmental and water management matters.
- Support business development activities within the mining sector, including proposal preparation and capability development

These requirements reflect the knowledge, skills and abilities that help you do your best work here.

- Undergraduate or Graduate Degree in Geology, Geological Engineering, Environmental Engineering, Hydrogeology, or a related earth science field.
- Professional Geoscientist (P.Geo.) designation or eligibility for registration with a Canadian licensing body.
- A minimum of 4+ years of experience in hydrogeological consulting, groundwater resources, mining environmental services, infrastructure dewatering, or related environmental consulting.
- Practical experience with ARD/ML characterization methods, including static and kinetic geochemical testing programs.
- Experience designing and implementing groundwater monitoring programs, aquifer testing programs, and groundwater sampling investigations.
- Experience with hydrogeological characterization, groundwater flow interpretation, and conceptual site model development.
- Working knowledge of the Ontario Water Resources Act, Permit to Take Water requirements, O. Reg. 903 Wells Regulation, and related groundwater regulations.
- Experience with mine site hydrogeological characterization, water balance modeling, and water management plan development.
- Experience supporting infrastructure dewatering, groundwater control, or construction water management projects is considered an asset.
- Experience with hydrogeological software such as MODFLOW, FEFLOW, AQTESOLV, Leapfrog Works, GIS platforms, Surfer, or equivalent tools.
- Strong client liaison, field program management, and technical writing skills.
- Willingness to travel to remote and northern project sites.
- Ability to interface with cross-functional teams and all levels of personnel/management
- A valid G driver’s license with no restrictions

Work Environment and Physical Requirements





The physical and environmental requirements below reflect what’s typically needed to perform the essential functions of this role safely and effectively.

- Sitting, standing, and walking
- Lifting 23 kilograms (50 pounds) several times a day
- Overhead lifting of over 9 kilograms (20 pounds)
- Works in an office environment when not conducting mine site field investigations or attending client meetings
- Often works outdoors and may be exposed to hot and cold environments and extreme weather conditions, including sunlit, rainy and windy conditions

Onterris provides support in its recruitment processes to applicants with disabilities; including accommodation that considers an applicant’s accessibility needs. Candidates requiring accommodation during the recruitment process are asked to work with Human Resources directly.

This posting reflects a current vacancy that the company is actively seeking to fill.

Please note, we are not accepting third party agency applicants at this time.

We are an equal opportunity employer and encourage applications from people of all backgrounds.

We acknowledge that these experiences and perspectives help to enrich our teams and contribute to our ongoing success.

We are committed to providing access and reasonable accommodation in our employment for all applicants.

For more information, visit

At Onterris, we take on complex challenges with purpose and momentum, alongside teams that lead with integrity, deliver together, and invest in your growth.

- Erin Peck, Emissions Services “Working with inspiring coworkers and clients across the globe over the past five years has been incredibly rewarding. Their passion motivates me to improve our client experience and work that I deliver.”

- Andre Richardson, Consulting “There are not many places where a toxicologist can be boots-on-the-ground at an environmental emergency one day and deep in a human health risk assessment or litigation the next, but this company is one of them, and honestly, that breadth is what makes me love the work. We are a team of scientists with a broad range of talents and experiences who genuinely take the mission to heart, because protecting people and communities from chemical hazards is not abstract here; it is exactly why we show up every day. The culture reflects that shared commitment in the best way: collaborative, rigorous, and truly motivated by the impact we make together.”

- J Esteves, R&D; “I knew my position here would be more than just a job. Every day is a new, exciting challenge to solve, and I get to go home knowing that the work I am doing is having a positive impact on the world.”

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📌 Intermediate Geoscientist (Guelph)
🏢 LE044 Onterris Canada
📍 Guelph