Senior Water Resources Engineer

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.

As an Senior Engineer in our 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 $125,000 to $165,000, commensurate with experience, skills, and geographic location.

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

• Drive High-Impact Projects: Lead conceptual to detailed engineering design for major surface water, municipal stormwater, and flood mitigation projects across AB, BC, and SK.
• Detailed Infrastructure Engineering: Hands-on oversight and preparation of conceptual, preliminary, and detailed designs for:
  • Stormwater drainage networks & storage facilities.
  • Constructed wetlands & low-impact development (LID) features.
  • Overland drainage systems (culverts, ditches, and engineered channels).
  • Erosion and sediment control (ESC) measures.
• Advanced Urban Systems Engineering: Direct specialized hydrologic and hydraulic modeling initiatives including Master Drainage Plans (MDPs), Staged Master Drainage Plans (SMDPs), dual-drainage network evaluations using PCSWMM, dam breach inundation analyses, and detailed wetland water balance studies. Apply cutting-edge LID features, green infrastructure, and climate-resilient designs to complex urban and natural systems.
• River & Hydrotechnical Engineering: Guide hydrotechnical, river engineering, and water quality assessments, balancing development requirements with natural system protection.
• Full-Lifecycle Ownership: Lead multi-disciplinary scopes from concept to commissioning, managing schedules, budgets, scope changes, and financial performance while serving as the primary client contact.
• Construction Contract Administration: Lead the preparation of tender documents, technical specifications, and construction cost estimates. Provide senior oversight during resident engineering and contract administration phases.
• Regulatory Approvals: Build strong relationships with municipal, provincial, and federal regulatory bodies to navigate approval pathways efficiently.
• Multi-disciplinary Coordination: Work collaboratively across disciplines, integrating input from hydrogeology, geotechnical engineering, surveying, landscape architecture, transportation, and natural sciences.
• Grow the Practice: Partner with leadership on business development, proposal preparation, client engagement, and expanding our surface water practice footprint across Western Canada.
• Empower Others: Serve as a technical mentor for junior and intermediate engineering staff, guiding their development in complex modeling, detailed design, report writing, and personal growth.

• Education:Bachelor’s degree in Civil, Water Resources, or Environmental Engineering. A graduate degree (M.Sc. or Ph.D.) is considered an asset.
• Professional Designation:Professional Engineer (P.Eng.) or Professional Licensee (P.L.Eng.) registration with APEGA, or eligibility for immediate transfer.
• Experience:10 or more years of progressive experience in water resources and municipal engineering, with a strong emphasis on urban stormwater management and surface water modeling.
• Advanced experience with urban drainage tools such as PCSWMM, EPA SWMM, MIKE+, InfoWorks ICM, or GeoSTORM.
• Familiarity with additional hydrotechnical software (HEC-RAS, HEC-HMS, SWAT, HSP-F, or EFDC) is an asset.
• Experience with Civil3D, AutoCAD, and spatial analysis platforms (ArcGIS, QGIS, Global Mapper).
• Knowledge of scripting languages (Python, R, VBA) for model automation and data processing is a strong asset.
• Project Execution Skills:Proven track record of delivering detailed design packages, preparing tender documentation, and providing construction oversight.
• Communication:Outstanding written and verbal communication skills, w