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Senior Reactor Physicist

AtkinsRéalis



Senior Reactor Physicist

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.

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.



Our Reactor Core Physics Department at AtkinsRéalis/Candu Energy is engaged in design and analysis work to support the design of new CANDU Nuclear Power Plants as well as supporting the operation and safety of the existing domestic and international CANDU plants. We are currently looking for Senior Reactor Physicists to be part of our team.

Location – Mississauga, ON


Your role within the team:

  • Perform and/or supervise the following calculations: Finite-reactor-core calculations, Kinetics calculations, Advanced-fuel-cycle calculations, Monte Carlo calculations.
  • Prepare inputs, run reactor physics computer codes, and develop, adapt and modify FORTRAN computer codes as required for specific applications (e.g., to implement new methods or perform new types of calculations).
  • Develop methodologies and perform reactor physics analyses to support design and commercial activities.
  • Document analyses in technical notes and reports, and present results at meetings.
  • Interface with other groups/projects as required.
  • Review technical documents and supervise junior staff.
  • Estimate, monitor schedules and assign work to meet completion dates.
  • Interface with clients and projects to assess reactor physics related issues confronting their projects/stations and advising on potential solutions.
  • Prepare and/or review work proposals for internal and external clients.
  • Perform varied work assignments effectively and respond quickly to changing project needs.
  • Establish required resources for client work.
  • Propose/develop approaches to be used on reactor physics tasks.
  • Develop analysis basis plans.
  • Lead work and liaise with a multidisciplinary analysis team including project management.

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.

The ideal candidate:


  • Master’s degree or equivalent in Nuclear Engineering from a university of recognized standing.
  • A minimum of 10 to 15 years of relevant experience or combination of experience and advanced education.
  • Extensive experience with reactor physics codes WIMS, DRAGON, RFSP, and MCNP. Experience with DONJON and KENO computer codes.
  • Must be conversant with computer environments; proficiency in both Linux and WINDOWS environments is a strong asset.
  • Proficiency in computer programming, especially FORTRAN, is very desirable.
  • Ability to work well under pressure and be flexible, i.e., must be able to perform varied work assignments effectively and respond quickly to changing project needs.
  • Ability to work to budget and schedule.
  • Full commitment to working in a formal QA environment.

Are you up for this challenge? Apply today and join our team to help engineer a Better Future for our Planet and its People.

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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Appropriate accommodations 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.



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