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AtkinsRéalis

Reactor Physicist

CA.ON.Mississauga.2251 Speakman Drive

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hirly's read of this role

Seniority
Mid level
Country
CA
Work mode
On-site / unstated
First seen by hirly
13 Sept 2026

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

the posting

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.

Original posting on AtkinsRéalis's site ↗

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