Your role at GEI.
Are you ready to lead complex water modelling initiatives that shape resilient and sustainable communities? At GEI Consultants, we are seeking a Senior Water Modeller with deep technical expertise and leadership experience to drive impactful water infrastructure projects across the GTA and beyond.

In this role, you will collaborate with municipalities, conservation authorities, and multidisciplinary teams to deliver advanced water servicing solutions. You’ll provide strategic direction, oversee high‑profile projects, mentor team members, and influence critical infrastructure planning decisions.

If you're looking to take your career to the highest level - while making a meaningful impact on how communities manage and adapt their water systems -this is your opportunity.

Essential Responsibilities & Duties

Lead complex water modelling studies for municipal infrastructure projects

Oversee development and calibration of models using tools such as Infowater Pro, WaterCAD and related platforms

Provide technical leadership on master planning, Class Environmental Assessments (EAs), and servicing studies

Manage project delivery, including scope, schedule, budget, and coordination of multidisciplinary teams

Act as a trusted advisor to clients, regulators, and stakeholders across the GTA (e.g., municipalities, TRCA, CLOCA)

Mentor and develop junior and intermediate staff, fostering technical excellence and knowledge sharing

Review and approve high-quality deliverables including technical reports, modelling documentation, and design recommendations

Support business development activities, including proposal preparation, client presentations, and strategic pursuits

Minimum Qualifications

Degree in Civil Engineering, Water Resources Engineering, or related discipline

Minimum 15+ years of progressive experience in water resources modelling and infrastructure planning

Professional Engineer designation (P.Eng. in Ontario) or eligibility required

Advanced expertise in:

Hydraulic analysis

Proficiency in industry-standard modelling software:

Infowater Pro

WaterCAD

Strong knowledge of GTA municipal standards,



Ontario regulations, and conservation authority requirements

Proven experience leading complex projects and mentoring technical teams

Excellent communication skills, with the ability to present complex technical concepts to diverse audiences

Physical and environmental requirements for this position are available upon request.

Preferred Qualifications

Experience with climate change modelling, flood mitigation, and resilience planning

Proficiency with GIS tools (ArcGIS, QGIS) and data analysis platforms

Established relationships with local GTA municipalities and agencies

Demonstrated success in client management and business development

What You Bring

A passion for technical excellence and innovation in water modelling

Strategic thinking with the ability to influence infrastructure planning decisions

Leadership mindset with a commitment to mentorship and team development

A collaborative approach to solving complex engineering challenges

We are GEI.
Some of the world’s most pressing problems – from climate change to sustainable development, to critical infrastructure and the future of our energy supply – need our brightest and diverse minds working together to create safer, more resilient communities for tomorrow.

We are technical experts, collaborators, and entrepreneurs who draw from diverse backgrounds to solve our clients’ most complex challenges.

With several offices across North America, we offer a range of engineering, science, and technical consulting services. Our range of expertise, project types, and culture make us the choice for top talent in the AEC industry. See all our office locations here.

In 2023, GEI merged with GM BluePlan, an Ontario-based engineering, management, and technology consulting company.



The merger adds GM BluePlan’s nationally recognized expertise in asset management and infrastructure planning to the GEI family, furthering our growth and expansion in Canada.

Employee-owned. Employee-focused.
As an employee‑owned company, our employees support our flat leadership structure, have a say in how our business operates and benefit from our financial success. We are committed to employee growth with career development opportunities, competitive total rewards, a well‑being program, flexible work arrangements and more. Our company culture is driven by our 4 Cs – we are Client‑Centered, Curious, Collaborative, and Community Minded – which support our focus on sustainability, safety, diversity, equity and inclusion. Get to know us better by visiting GEI’s career site here.

GEI’s Total Rewards Package Includes

Market-Competitive Compensation, including Eligibility for an Annual Performance Bonus

Comprehensive Benefits Program including Health Care and Wellness Spending Accounts

Hybrid Work Schedules and Cell Phone Stipends

GEI University (GEIU) with Continuing Education Assistance and Tuition Reimbursement

Connecting Conversation Program with a Focus on Professional Development and Opportunities for Advancement

Support and Financial Rewards for Publication Awards, Professional Dues, and Qualified Licenses

Paid Holidays and Generous Paid Time Off Program

Rewards and Recognition

RRSP Program

Opportunity to be an Owner and Shareholder

A Vibrant Culture that is Focused on Partnership, Sustainability, Giving Back to Our Communities and Diversity, Equity and Inclusion

And More…

GEI is an equal opportunity employer committed to diversity and inclusion. We consider all qualified applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, Aboriginal/Indigenous status or any other factors considered discriminatory. If you require an accommodation during the recruitment process, we will work with you to meet your needs.

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📌 Senior Water Modeller (Ontario)
🏢 GEI Consultants
📍 Ontario