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Senior Radiation Physicist

Job in Mississauga, Ontario, Canada
Listing for: AtkinsRéalis
Full Time position
Listed on 2026-01-02
Job specializations:
  • Engineering
    Electrical Engineering, Environmental Engineer
Job Description & How to Apply Below

Job Description

Senior Radiation Physicist

Come join us in reshaping the future with Atkins

Réalis. Atkins

Réalis is dedicated in engineering a better future for our planet and its people.

Atkins

Réalis
/ Candu Energy Inc. , is looking for a Senior Radiation Physicist to be a part of our team in the Fuel and Physics department supporting the design of new nuclear power plants and the operation, refurbishment, or waste management and decommissioning of existing CANDU nuclear power plants.

Your role within the Team:

  • Lead, plan, perform, document, review, and/or verify technical analyses that includes the use of radiation transport codes, performing dose calculations, and/or application / development of activity transport models.
  • Produce high quality reports effectively summarizing technical information and present results to internal and/or external stakeholders. Attend and participate in meetings as needed.
  • Collate, assimilate, and summarize results from existing analyses.
  • Follow the relevant procedures, guidelines and standards governing the work being performed, and continually improve skills through instructor-led courses and/or on-the-job training.
  • Develop, adapt, or modify computer codes for specific applications and to solve new problems.
  • Why choose
    Atkins

    Réalis 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 or Physics with 10-15 years of relevant experience.
  • 8+ years of experience with radiation transport, performing dose calculations, activity transport, shielding applications, waste management, radioactivity dispersion.
  • Experience with the computer codes MCNP, SCALE/ORIGEN, or ADDAM (equivalent codes acceptable, ability to program especially in python, PERL, MATLAB, C++, or Fortran and proficient in Microsoft Office. Familiarity with the Linux operating system.
  • Ability to present technical material as well as develop and deliver training effectively.
  • Working knowledge of work processes, and associated technologies. Eligible to obtain license for nuclear software that falls under the US Department of Energy 10 CFR Part 810 radiation physics codes, such as MCNP and SCALE.
  • Experience with rehabilitation and decommissioning activities and supporting station operations.
  • Experience working at a nuclear facility, performing radiation transport and shielding calculations, and code development including source control and testing.
  • Knowledge of the nuclear regulatory framework, along with codes and standards applicable for nuclear work in Canada.
  • Are you up for this challenge? Apply today and join our team to help engineer a Better Future for our Planet and its People.

    About Atkins

    Réalis

    At Atkins

    Réalis, 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.

    Atkins

    Réalis cares about your privacy. Atkins

    Réalis and other subsidiary or affiliated companies of Atkins

    Réalis (referred to throughout as “Atkins

    Réalis”) 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 Atkins

    Réalis, you confirm that you have read and accept our Privacy Notice.

    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 Atkins

    Réalis’ 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 Atkins

    Réalis, 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.

    Position Requirements
    10+ Years work experience
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