About Us

At Onterris, we build careers grounded in purpose,responsibilityand 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,interwovenand international. Our scientists, engineers, field teams,consultantsand professionals collaborate across disciplines and geographies, guiding industries and governments, ensuring that communities and environments thrive. When you join us,you’renot just forging acareer,you’rejoining a movement. A movement for better thinking, smartersolutionsand lasting impact. Together, we will advance our way of life and protect the integrity of our environment every step of the way. ADay in theLife As an Senior Groundwater Modeller, in our

Oakville, Guelph, Calgary office,

you’ll be responsible for assisting multiple projects where you will have increasing interaction with our multi-disciplinary staff, regulatory agencies and clients. You will be part of a strong team of committed professionals. The compensation range for this role is $134,000 to $184,000, commensurate with experience, skills, and geographic location To thrive in this role,you’llbe comfortable taking ownership of the following responsibilities: Develop and applygroundwater flow and transport modelsto support decision-makingfor a wide range of projects. Provide ownership,oversight, review, and technical directionofmodelling projects and deliverables, collaborating closely with junior and intermediate project staff,internalcollaborators,and clients. Lead discussions with clients and prepare scopes of work including pricing and staffing. Act as projectmanager for multiple routine projects or fewer complex projects. Developandexecuteconceptual model-driven work plans that balance the application of innovative modelling tools and approaches with the scale and scope of the problem.



Collaborate with a multi-disciplinary team focused on being trusted advisorsto our clients. Managemultiple priorities, scope changes and supportmultiple project managers. Provide peer review and technical accountability of project results and reports. Liaise with clients and stakeholders within various sectors. YourExpertise andSkills These requirements reflect the knowledge,skillsand abilities that help you do your best work here. Anundergraduateorgraduate degree in Engineering,EarthSciencesor related discipline 15years’ experiencein a similar role within a consulting environment with experience in hydrogeologyand numerical methods. Professional registration with provincial self-regulating organizations (e.g., APEGA). Demonstrated experience in the application of numerical modellingtools and approaches,including,remedial action plans,subwatershedstudies, environmental assessments, wellhead protection studies, anduncertainty analysis to support risk assessment. Experiencewith FEFLOW,MODFLOW,MIKESHE, ATRANS, Hydrus,or similar software. Knowledgein specialized technical areas such asgeostatistics, reactive transport modelling, multi-phase modelling,or coupled surface water-groundwater flow and transport modelling. Skilled in data analysis using Database/GIS/Visualization tools to support conceptual model development and numerical modelling results analyses. Experiencein data management and analysis,especially withPythonorSQL. Strong business development acumen anddesire to develop and expand client opportunities.



Strong interpersonal and communication skills, and a collaborative attitude. Strong commitment tomentorship and knowledge transfer. Ability to work within a multi-disciplinary team environment. Strongexperience writing technical memos and giving presentationsinaconsultingenvironment. A valid class G driver’s license with no restrictionsis an asset. This posting reflects a current vacancy that the company is actively seeking to fill. As a note, we are not accepting third party agency applicants at this time. We are an Equal Opportunity Employer. We are committed to providing access and reasonableaccommodation inouremployment for individuals with disabilities. Onterris is a leading global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect. Guided by our mission to advance the way of life without compromising the integrity of our environment, we believe environmental responsibility and human progress are fundamentally connected. Our scientists, engineers, field teams and consultants apply systems thinking that unites science, data and practical expertise to deliver solutions that strengthen our clients’ resilience, mitigate risk and protect the air, water and soil that sustain communities, while uncovering responsible paths forward for planet and progress. For more information, www.onterris.com. We are an equal prospect 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 US residents, here to learn more.

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📌 Senior Groundwater Modeller (Winnipeg)
🏢 Montrose Environmental Group
📍 Winnipeg