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AtkinsRéalis

Senior Mechanical/Process Engineer

CA.ON.Mississauga.2251 Speakman Drive

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hirly's read of this role

Seniority
Senior
Country
CA
Work mode
On-site / unstated
First seen by hirly
27 Sept 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

Job Description

Overview

AtkinsRéalis is looking to hire a Senior Mechanical/Process Engineer. This position requires experienced individuals who are self-starter capable of working independently and leading/supervising junior engineers. The individuals will work in a fast-paced team environment performing engineering services for Nuclear Power Plants within a matrix organization.

Your role

  • Prepare and review design basis documents for both nuclear and conventional systems of the nuclear power station e.g. design specification, over-pressure protection reports and design reports, Drawings, BOMs, SCL, etc.
  • Prepare and review Engineering Change packages following major nuclear operator’s ECC process.
  • Mentor and provide technical guidance to junior engineers.
  • Perform calculations and assessment as required.
  • Support Engineering Management with timely updates on engineering progress, performance and staffing needs.
  • Directly interface with Customer’s engineering representatives. Ensure that applicable standards and regulatory requirements are met.

About you

  • Degree in Mechanical or Chemical Engineering from an accredited University with a minimum of 15 years of relevant experience (minimum 10 years in the nuclear industry as a Senior Design Engineer working on modifications to nuclear systems or components).
  • Qualified Specialized Professional Engineer to ASME Section III, Div.1, Appendix XXIII or qualified for certification.
  • Registered Professional Engineer in the Province of Ontario, and member in good standing.
  • Experienced in Refurbishment, Modifications and technologies enhancement of existing Mechanical and Piping Systems Structures and Components (SSCs) in operating stations from Conceptual Design to Available For Service (AFS) and Close Out following established Client Engineering Change Control (ECC) processes and procedures.
  • Experience in plant islanding/lay-up engineering. Mechanical, Process and Piping Systems integration/design and analysis for SSCs (e.g. Turbine Auxiliary Systems, Moisture Separators/Reheaters, Water Treatment Plant, Main Condenser, HVAC, Station Drainage, Cranes, Compressed Air Systems, Water Systems, Chillers, etc.).
  • Experience interfacing with CNSC and TSSA including preparing correspondence letters, TSSA registration and re-conciliation packages, code classifications and memos.
  • Working knowledge of nuclear codes and standards, including CSA N285.0, CSA N289, ASME Section III Division 1 and ASME B31.1.
  • Working knowledge of major nuclear operator’s ECC process.
  • Excellent written and oral communication skills.
  • Results driven individual with strong interpersonal skills.

Additional, preferred qualifications:

  • Knowledge of pressure boundary work including pressure vessel design, analysis, code classification, code class boundary, non-destructive examination and design registration is an asset.
  • Knowledge of dimensioning and tolerancing ASME Y14.5 standard is an asset.
  • Presentation skills and public speaking abilities is an asset.
  • Knowledge of seismic and environmental qualification methods and processes is an asset.

Rewards & benefits

Explore the rewards and benefits that help you thrive – at every stage of your life and your career at AtkinsRéalis in Canada.

Enjoy competitive compensation, employee recognition, and a brilliant range of flexible benefits you can tailor to your health, wellbeing, financial and lifestyle needs.

Make the most of diverse opportunities for training and professional development to grow your skills and expertise.

And take advantage of our hybrid working culture and generous time-off policies to balance a fulfilling career with your personal life.

Be rewarded. Find out more.

About AtkinsRéalis

We're AtkinsRéalis , a world-class engineering services and nuclear organization. We connect people, data and technology to transform the world's infrastructure and energy systems. Together, with our industry partners and clients, and our global team of consultants, designers, engineers and project managers, we can change the world. We're committed to leading our clients across our various end markets to engineer a better future for our planet and its people.

Find out more.

Additional information

AtkinsRéalis cares about your privacy. AtkinsRéalis and other subsidiary or affiliated companies of AtkinsRéalis (referred to throughout as “AtkinsRéalis”) are committed to protecting your privacy. Please consult our Privacy Notice on our Careers site to know more about how we collect, use, and transfer your Personal Data.

By submitting your personal information to AtkinsRéalis, you confirm that you have read and accept our Privacy Notice.

Appropriate accommodation will be provided upon request throughout the recruitment and hiring process as required by Company policy and the Accessibility for Ontarians with Disabilities Act (AODA).

Successful applicants will be notified about AtkinsRéalis’ accommodation policies at the time the employment offer is extended, and the information will be shared with new personnel during the onboarding process.

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.

Original posting on AtkinsRéalis's site ↗

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