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AtkinsRéalis

Mechanical Engineer

Mississauga, ON, Canada
Pickering, ON, Canada

Full-time

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Applications open in a new tab.

Job details

Job type: Full-time
Apply by: Oct 16, 2026
Experience: · Minimum of 4 years of engineering experience in design and integration of complex systems required, with at least 2 years’ experience in a regulated industry.
Posting language: English
Posted: Oct 2, 2026

Original job description

Job Description

AtkinsRéalis is one of Canada's largest private sector nuclear engineering groups. We have been providing a wide range of services to the nuclear industry in Canada and around the world for more than 60 years. We are proud to be the steward of Canadian CANDU nuclear technology.

We have an exciting and innovative new team focussed on new and groundbreaking projects, allowing a chance to influence future new build design decisions – and we want you to be part of it! For this role, you can be based in either our Pickering or Mississauga, ON, offices, within a hybrid working environment.

As a Mechanical Engineer within the Enabling Projects team, you will play a key role in developing the technologies, infrastructure, and strategic initiatives required to support the next generation of nuclear and clean energy projects. Working within the New Build FEED organization, you will provide technical know-how across multidisciplinary teams, helping transform innovative concepts into executable projects that will enable future large-scale deployment opportunities.

This is a highly visible role that combines technical excellence, systems thinking, and project leadership. You will work on complex engineering challenges, engage directly with clients and stakeholders, and influence critical decisions during the earliest stages of project development. Success in this role will contribute directly to securing future business opportunities and advancing strategic growth initiatives for the company.

Your role

Responsible for engineering activities across feasibility, conceptual design, FEED, detailed design, commissioning, and operational support phases.
Provide design solutions for process plant systems and pressure equipment.
Prepare and/or review design documents for plant equipment of a chemical plant e.g. equipment design, design calculations, assessments, technical specifications, drawings, BOMs and System Code Classification.
Prepare and review engineering drawings, equipment specifications, model reviews, and system integration activities.
Perform and review equipment sizing, equipment selection, and system performance evaluations.
Coordinate multidisciplinary engineering teams to ensure integrated and technically robust design solutions.
Drive technical decision-making, design optimization, and value engineering activities throughout project development.
Identify, evaluate, and manage technical, operational, and project risks.
Support evaluation of system total lifecycle costs, considering development, operation, maintenance, and disposal costs, to evaluate design and operational concept alternatives.
Ensure designs comply with applicable codes, standards, licensing requirements, and company quality requirements.
Support regulatory, permitting, and stakeholder engagement activities.
Interface with internal and external stake holders as required.

About You

· Degree from an accredited university in Systems Design, Industrial, Mechanical or Process Engineering, or other suitable cross-cutting engineering program.

· Minimum of 4 years of engineering experience in design and integration of complex systems required, with at least 2 years’ experience in a regulated industry. Note that the Enabling Projects this team undertakes are not necessarily nuclear in nature, but some experience with the nuclear industry is preferred.

· Licensed by a professional engineering organization recognized in Canada is required. A licensed Professional Engineer from a Canadian provincial Professional Engineering organization (e.g., PEO) is preferred.

· Working knowledge of pressure boundary licensing requirements, and interface with TSSA/ CNSC.

· Proven technical risk and project management skills to allow for the effective planning and tracking of engineering development activities.

· Experience designing complex systems and providing systems integration engineering support to early FEED, construction and commissioning of design/build projects is required. Experience with complex industrial facility full life cycle engineering (e.g., operations, plant modifications, or decommissioning) is considered an asset.

· Demonstrated ability to analyze complex systems from a blank canvas through to completion, identifying potential risks and effective solutions.

· Desire and demonstrated ability to innovate and improve engineering activities and deliverables using emerging technologies is an asset.

· Effective organizational skills, including demonstrated skill in time management and setting priorities, with proven ability to manage technical activities effectively under tight schedules and budget.

· Excellent interpersonal skills and the ability to work in a multidisciplinary team environment, as well as communicating and working effectively with external customer and regulator stakeholders.

· Adaptable to change and thrive in a dynamic, team-oriented environment.

· Must be eligible for Security Clearance through Public Works and Government Services Canada.

· Must be able to travel to client sites as required, according to specific project needs.

Worker Type

Employee

Job Type

Regular

At AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. We strongly believe that world-class talent makes no distinctions based on gender, ethnic or national origin, sexual identity and orientation, age, religion or disability, but enriches itself through these differences.

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More about this job

Responsibilities

The Mechanical Engineer will lead engineering activities across feasibility, design, and commissioning phases for complex nuclear and clean energy projects. They will coordinate multidisciplinary teams to deliver robust design solutions while managing technical risks and regulatory compliance.

Requirements

Candidates must hold a degree in Systems, Industrial, Mechanical, or Process Engineering and possess at least 4 years of relevant experience. A professional engineering license in Canada is required, along with eligibility for security clearance.

Skills

Mechanical Engineering
Systems Design
Process Engineering
FEED
Project Leadership
Technical Risk Management
Systems Integration
Pressure Equipment
Value Engineering
Regulatory Compliance
Stakeholder Engagement
Design Optimization
Lifecycle Cost Analysis
Commissioning
Technical Specifications
Multidisciplinary Team Coordination

Visa sponsorship

Not detected in the job text

Keywords

Mechanical Engineer
Nuclear Engineering
CANDU
FEED
Systems Design
Industrial Engineering
Process Engineering
Pressure Equipment
TSSA
CNSC
Project Management
Risk Management
Value Engineering
System Integration
Commissioning
Design Documents
Technical Specifications
Lifecycle Costs
Regulatory Compliance
Engineering Drawings
BOMs
System Code Classification
Clean Energy
Infrastructure
Professional Engineer
PEO
Security Clearance
Multidisciplinary Teams
Conceptual Design
Detailed Design

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