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Salary
≈ $60k – $111k per year (Estimated)
Location
Hybrid (Mississauga, Canada)
Seniority
Senior · 5+ years exp
Visa
Positions approved through LMIA in 12 months: 5
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 24, 2026. First seen by Alion on Sep 11, 2026. AtkinsRéalis scores A on the Alion truth index.

Overview
Company
Impact
Profile match
AtkinsRéalis is a Canadian professional services and project management company created when the engineering firm SNC-Lavalin, founded in Montreal in 1911, acquired the British consultancy Atkins in 2017 and adopted the combined name in 2023. It designs and manages infrastructure programmes across transport, water, buildings, energy and defence, and holds a substantial nuclear business through Candu Energy that services and builds heavy water reactors. Headquartered in Montreal and listed in Toronto, the group employs tens of thousands of engineers, planners and consultants across Canada, the United Kingdom, the Middle East and Asia Pacific.

Job Description

Candu Energy Inc. is looking for a Reactor Physicist to be a part of our Reactor Core Physics Department supporting the design of new nuclear power plants and the operation and refurbishment of existing CANDU nuclear power plants.

Your role:

  • 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

  • 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

  • Estimate, monitor schedules and assign work to meet completion date, perform varied work assignments effectively and respond quickly to changing project needs

  • Propose/develop approaches to be used on reactor physics tasks

  • Develop analysis basis plans

About you:

  • A Relevant honours degree from a university of recognized standing in Physics or Nuclear Engineering or equivalent;

  • A minimum of 5 years of relevant experience (experience obtained in advanced degree programs will be considered for applicability against this requirement) Experience with reactor physics codes such as WIMS, DRAGON, RFSP and/or MCNP

  • Experience with DONJON and KENO codes is very desirable

  • 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 Excellent oral and written communication skills are required

  • 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

  • Strong problem solving skills are essential

  • Ability to show initiative while working in a team environment

  • Ability to work to budget and schedule

  • Full commitment to working in a formal QA environment.

Reward & 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 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.

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