Senior Aquatic Ecologist​/Fish Biologist

Company Description

Are you ambitious and looking to make the right move in your career? Now is the perfect time to join Egis. Egis is experiencing substantial growth in North America, highlighted by our recent acquisition of Ecometrix
—now made up of over 1,000 engineers, architects and planners across Canada and the USA. This strategic move underscores our commitment to investing in North America, propelling our expansion to new heights.

Our values showcase everything we believe in:

• A Responsible Company – We care about people, and we care about our impact; acting responsibly wherever we work and whatever we do.
• A People-First Company – This is an environment of mutual respect where every team member matters, no matter who they are.
• A Creative Company – Creativity is in our DNA. This is the fuel that helps us tackle the major challenges of our time.

Joining Egis is an opportunity to make a valuable, positive impact on the world, while growing and developing as a person. Our culture is very collaborative, and we care about people and our impact. We take great pride in being responsible for our clients, for each other and for our planet and its people. You’ll work and innovate in an environment where high standards and personal consideration go hand-in-hand.

Learn more about the exciting opportunity below where you’ll be part of projects renowned for technical excellence, ambition and sustainability.

We are seeking a highly experienced Senior Aquatic Ecologist / Fish Biologist with deep expertise supporting mining and nuclear sector projects across Ontario and throughout Canada. The successful candidate will lead aquatic baseline studies, impact assessments, permitting, and mitigation strategies for complex industrial developments, expansions, refurbishments, and decommissioning projects. This senior technical and strategic role includes overseeing multi‑disciplinary teams, advising clients on regulatory risks, and serving as a key subject‑matter expert for high‑profile projects.

• Design and lead aquatic baseline studies tailored to mining and nuclear regulatory expectations, including fish community surveys, habitat mapping, hydrological/aquatic connectivity assessments, water quality and effluent interaction studies, and benthic invertebrate programs.
• Assess facility interactions with water bodies, cooling systems, intake/outfall structures, contaminated sites, tailings areas, and realignment/diversion works.
• Lead analysis of cumulative effects, thermal effects, entrainment/impingement, mine‑water discharge impacts, habitat alteration, and species‑at‑risk considerations.
• Develop mitigation, offsetting, and habitat compensation plans that meet Fisheries Act and Canadian Nuclear Safety Commission (CNSC) requirements.
• Lead aquatic components of Fisheries Act authorizations (including habitat offsetting plans and monitoring programs), Impact Assessment Act (IAA) and Ontario Environment Act processes, CNSC environmental project ion and licensing requirements, Species at Risk permits and habitat assessments, mine closure planning.
• Provide strategic guidance on regulatory pathways, timelines, and risks for major mining and nuclear infrastructure projects.

• Lead aquatic assessments for tailings management areas, mine‑water discharge pathways, watercourse realignments/diversions, and closure/reclamation planning.
• Support design and permitting of water management infrastructure (ditches, dams, intake/outfall systems, effluent treatment technologies).
• Interpret aquatic impacts associated with blasting, dewatering, pit expansion, tailings deposition, and acid rock drainage/metal leaching controls.

• Support aquatic assessments for nuclear station operations, new builds, refurbishments, cooling water systems, and thermal discharge evaluations.
• Lead entrainment/impingement studies, population modelling, and SARN/EA documentation for CNSC and Impact Assessment Agency of Canada (IAAC) reviews.
• Oversee environmental protection measures related to radiological and non‑radiological aquatic pathways.

• Manage complex…