Specialist Engineer - Reactivity Control Units

AtkinsRéalis • Mississauga, ON

13d • Hybrid

About The Position

We are currently seeking a Specialist Engineer who specializes in the design of CANDU Reactivity Control Units (i.e., Reactivity Mechanisms), providing strategic technical leadership, defining engineering approaches, and serving as a primary technical interface with organizations inside and outside the company on complex, large‑scale refurbishment and new build nuclear projects. Your role acts as a recognized technical leader in the design of CANDU reactor components, systems, and structures across complex projects. You will be recognized as a Subject Matter Expert for CANDU Reactivity Control Units and maintain effective technical liaison with internal and external organizations. This position involves providing technical leadership and mentoring of junior, intermediate, and senior engineers, influencing and aligning engineering practice across projects. You will develop new engineering concepts and design modifications to meet functional, regulatory, and lifecycle requirements, and devise and champion new approaches to complex or novel problems within the engineering specialty. The role includes leading the resolution of critical and high‑risk engineering issues, providing timely and defensible engineering solutions/direction, and addressing complex engineering challenges involving conflicting requirements, non‑standard materials, and difficult coordination constraints, establishing technically sound resolutions. You will evaluate and confirm the feasibility, robustness, and technical soundness of proposed engineering methods and approaches, and apply extensive knowledge of engineering precedents and related disciplines to establish technical judgment and direction. Providing guidance on applicable codes, standards, and regulatory requirements related to the discipline is also a key part of the role. You will perform critical reviews of design documents, calculations, drawings, and analysis reports, resolving complex or precedent‑setting technical issues, and review engineering assessments for the design and integrity of nuclear pressure boundary components. Additionally, you will review design documentation to ensure client requirements are met and initiate any corrective actions as necessary. The Specialist Engineer will support technical and commercial interfaces with the client, define work scope, plan activities, and coordinate engineering work for all design phases within major projects or across projects of considerable scope and complexity. You will support and guide the execution of technical engineering work packages to deliver within approved scope, budget, and schedule, and be responsible for reporting technical progress, risks, and schedule status to technical and project management. Contributions to engineering budgets and technical input for defined work packages are expected. You will participate in the development, interpretation, and advancement of engineering standards and contribute to technical forums within the area of specialty, as well as contributing technical input to operational and strategic planning processes, influencing engineering direction and resource deployment. Participation in the training and development of engineering staff is also a responsibility. This position operates with minimal technical supervision, receiving guidance primarily on overall objectives and critical issues.

Requirements

• A Bachelor’s or Graduate degree in Mechanical Engineering (or related discipline such as Materials or Nuclear Engineering) from a university of recognized standing.
• Licensed as a Professional Engineer in the Province of Ontario.
• Minimum 15 years of related work experience with CANDU reactor design and/or ASME pressure vessel design.
• Experience in classical stress calculation.
• Knowledge of first principles related to solid mechanics such as relationship between stress and strain, material properties, fatigue, fracture mechanics, creep.
• Experienced in producing drawings (including dimensioning and tolerancing).
• Familiarity with AtkinsRéalis/Candu Energy Quality Assurance programs and processes and procedures.
• Familiarity with ASME Section III pressure boundary design and CSA N285.0.
• Ability to work as part of a multi-disciplinary team.
• Ability to work independently and demonstrate problem-solving skills.
• Drive for continuous learning by own initiative.
• Excellent time management skills and ability to prioritize work within project constraints.
• Strong written and oral communication skills.

Nice To Haves

• Knowledge of GD&T is preferred.
• Knowledge of CANDU Reactivity Control Units design is preferred.

Responsibilities

• Acts as a recognized technical leader in the design of CANDU reactor components, systems, and structures across complex projects.
• Is recognized as a Subject Matter Expert for CANDU Reactivity Control Units and maintains effective technical liaison with internal and external organizations.
• Provide technical leadership and mentoring of junior, intermediate and senior engineers, influencing and aligning engineering practice across projects.
• Develops new engineering concepts and design modifications to meet functional, regulatory, and lifecycle requirements.
• Devises and champions new approaches to complex or novel problems within the engineering specialty.
• Leads the resolution of critical and high‑risk engineering issues, providing timely, and defensible engineering solutions/direction.
• Addresses complex engineering challenges involving conflicting requirements, non‑standard materials, and difficult coordination constraints, establishing technically sound resolutions.
• Evaluates and confirms the feasibility, robustness, and technical soundness of proposed engineering methods and approaches.
• Apply extensive knowledge of engineering precedents and related disciplines to establish technical judgement and direction.
• Provides guidance on applicable codes, standards, and regulatory requirements related to the discipline.
• Performs critical reviews of design documents, calculations, drawings, and analysis reports, resolving complex or precedent‑setting technical issues.
• Review engineering assessments for the design and integrity of nuclear pressure boundary components.
• Review design documentation to ensure client requirements are met and initiate any corrective actions as necessary.
• Support technical and commercial interfaces with the client.
• To define work scope, plan activities, and coordinate engineering work for all design phases within major projects or across projects of considerable scope and complexity.
• Supports and guides the execution of technical engineering work packages to deliver within approved scope, budget, and schedule.
• Is responsible for reporting technical progress, risks and schedule status to technical and project management.
• Contributes to engineering budgets and provides technical input for defined work packages.
• Participates in development, interpretation, and advancement of engineering standards and contributes to technical forums within the area of specialty.
• Contributes technical input to operational and strategic planning processes, influencing engineering direction and resource deployment.
• Participate in the training and development of engineering staff.
• Operates with minimal technical supervision, receiving guidance primarily on overall objectives, and critical issues.

Benefits

• Competitive compensation
• Employee recognition
• Brilliant range of flexible benefits you can tailor to your health, wellbeing, financial and lifestyle needs.
• Diverse opportunities for training and professional development to grow your skills and expertise.
• Hybrid working culture
• Generous time-off policies

What This Job Offers

• Job Type: Full-time
• Career Level: Principal
• Number of Employees: 5,001-10,000 employees