Senior Mechanical Engineer

AtkinsRéalis Group; Mississauga; On-site; CAD 140,000 - 180,000; Full time

Job summary

AtkinsRéalis Group is seeking a Senior Mechanical Engineer in Mississauga to lead and mentor teams on nuclear power plant projects. The role requires independent work, strong technical leadership, and delivery of complex engineering deliverables throughout the lifecycle.

Ideal candidates have a minimum of 15 years in engineering, including nuclear experience, and must hold or be eligible for Professional Engineer status in Canada. Travel to client and supplier sites may be required.

Qualifications

• Bachelor’s degree in an applicable engineering discipline from an accredited university.
• Registered Professional Engineer in a province of Canada and a member in good standing, or eligible for registration.
• A minimum of 15 years of relevant engineering experience, including significant nuclear industry experience and a senior design/technical role.
• Demonstrated experience delivering modifications or engineering work for nuclear facilities through the full lifecycle.
• Strong knowledge of applicable nuclear codes, standards, regulatory requirements, and quality-assurance practices.
• Excellent written and oral communication skills with ability to present technical information clearly.

Responsibilities

• Prepare and review engineering documents, calculations, specifications, reports, drawings, procedures, and other technical deliverables.
• Lead conceptual, preliminary, and detailed design activities for nuclear power plant systems, structures, and components.
• Define engineering scope, technical requirements, deliverables, budgets, schedules, and resource needs.
• Coordinate multidisciplinary engineering activities and resolve technical issues with clients, suppliers, project teams, and stakeholders.
• Support engineering changes through the engineering change control processes from concept to service availability.
• Provide pre-order and post-order engineering support, including procurement documents and supplier reviews.
• Support manufacturing, fabrication, installation, commissioning, and field activities at sites as required.
• Ensure compliance with codes, standards, regulatory requirements, and QA procedures.

Skills

Technical leadership

Problem solving

Organizational skills

Decision making

Communication skills

Team collaboration

Education

P.Eng (Canada) or eligibility

Bachelor's degree in engineering

Job description

## Senior Mechanical EngineerApply: CA.ON.Mississauga.2251 Speakman Drive: Full time: Posted Today: End Date: December 31, 2026 (30+ days left to apply): R-161696### **Job Description****Are you looking for a company that works on major engineering projects all over the world? Do you want to make a difference by improving the daily lives of communities worldwide? Are you seeking to join an inclusive and diverse team that you can truly count on? You’ve come to the right place!** **Come join us in reshaping the future with AtkinsRéalis. AtkinsRéalis is dedicated to engineering a better future for our planet and its people.** ## Job Description **AtkinsRéalis** is looking to hire a **Senior Engineer**. This position requires an experienced, self-motivated professional capable of working independently, leading complex engineering activities, and providing technical guidance to junior staff. The successful candidate will work in a fast-paced, multidisciplinary team environment delivering engineering services for nuclear power plants within a matrix organization. **Job Responsibilities:** * Prepare and review engineering documents, calculations, specifications, reports, drawings, procedures, and other technical deliverables.* Lead conceptual, preliminary, and detailed design activities for nuclear power plant systems, structures, and components.* Define engineering scope, technical requirements, deliverables, budgets, schedules, and resource needs.* Coordinate multidisciplinary engineering activities and resolve technical and interface issues with clients, suppliers, project teams, and other stakeholders.* Support engineering changes through the applicable engineering change control processes, from concept development through implementation, commissioning, closeout, and availability for service.* Perform and review technical assessments, calculations, design evaluations, and verification activities in accordance with applicable procedures.* Provide pre-order and post-order engineering support, including preparation of procurement documents, technical bid evaluations, supplier document reviews, and resolution of design deviations and non-conformances.* Support manufacturing, fabrication, assembly, testing, installation, commissioning, and field activities, including site and supplier visits as required.* Ensure work complies with applicable codes, standards, regulatory requirements, quality-assurance requirements, and client and company procedures.* Interface directly with client engineering representatives and communicate technical matters clearly to peers, management, suppliers, and other stakeholders.* Monitor and report on engineering progress, performance, risks, issues, and staffing needs to engineering and project management.* Mentor junior engineers and technical staff, provide technical guidance, and contribute to knowledge transfer and continuous improvement. ## Why choose AtkinsRéalis as an employer? Because we offer: * The opportunity to work on various major projects for internal and external clients.* An exciting environment where work-life balance is important.* A wide array of learning and development opportunities.* Competitive pay, flexible benefits, an employee share plan, and a defined contribution pension plan.* A work environment focused on health and safety. **About You** * Bachelor’s degree in an applicable engineering discipline from an accredited university.* Registered Professional Engineer in a province of Canada and a member in good standing, or eligible for registration.* A minimum of 15 years of relevant engineering experience, including significant experience in the nuclear industry and in a senior design or technical role.* Demonstrated experience delivering modifications or engineering work for nuclear facilities through the full engineering lifecycle.* Strong knowledge of applicable nuclear codes, standards, regulatory requirements, engineering change control processes, and quality-assurance practices.* Demonstrated ability to prepare and review complex engineering deliverables and perform or oversee design verification.* Experience coordinating multidisciplinary work and interfacing with clients, suppliers, project teams, and regulatory or authorized inspection organizations, as applicable.* Strong technical leadership, problem-solving, organizational, and decision-making skills.* Excellent written and oral communication skills, with the ability to present technical information clearly.* Results-driven, self-motivated, and able to work independently and collaboratively in a matrix organization.* Willingness to travel to and potentially work at project, client, or supplier sites to meet business needs. **Additional, preferred qualifications:** * Advanced degree in an applicable engineering discipline.* Experience with pressure-boundary systems or components, equipment qualification, seismic or environmental qualification, design registration, or other specialized nuclear engineering activities.* Qualification or recent experience as a Specialized Professional Engineer under an applicable code or standard.* Experience supporting procurement, manufacturing, fabrication, testing, installation, commissioning, and field engineering activities.* Knowledge of configuration management, systems engineering, constructability, operability, maintainability, and lifecycle considerations.* Strong presentation, facilitation, mentoring, and public-speaking abilities. Are you up for this challenge? Apply today and join our team to help engineer a Better Future for our Planet and its People.