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Posted 6 months ago

Specialist Reactor Physicist

@ AtkinsRéalis

Kincardine, Ontario

Full-time15+ years experience
Apply now
SIGNALS

Overview

AtkinsRéalis is hiring a Specialist Reactor Physicist for its Fuel and Physics department to support design of new nuclear plants and the operation, refurbishment and decommissioning of CANDU plants. The role involves reactor physics calculations, code development and leading analysis teams, with hybrid work and competitive compensation offered.

Responsibilities:

  • Perform and supervise reactor physics calculations including kinetics, transport and Monte Carlo
  • Develop and modify FORTRAN codes and methodologies for design and commercial work
  • Document analyses in technical notes and reports and present results
  • Supervise, train and assign work to junior staff
  • Advise clients on reactor physics issues and prepare work proposals

Requirements summary:

  • Master's or PhD in nuclear engineering or science from a recognized university
  • 15+ years relevant experience, or 10 years with an advanced degree
  • Extensive experience with WIMS, DRAGON, RFSP and MCNP
  • Proficiency in Linux and Windows environments
  • Programming in Python, MATLAB, C++ or Fortran

Tools & skills

Source and dates

Employer career site / ATS feed · workday

Employer posting date
2026-04-26
First seen by our source
2026-10-08
Source record updated
2026-10-16

These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.

Job details

SenioritySenior
DepartmentEngineering
Experience15+ years
Manages peopleYes
Hours per week40 (estimated)
Work settingOffice
PositionMostly sitting
Physical demandsphysical low · computer high
LanguagesEnglish
EducationMaster’s degree (required), Doctorate (preferred)
Fields of studyNuclear Engineering, Science
Perks mentionedFlexible hours, Paid training

Summary and details written by AI from the posting; the employer’s posting is the authority.

AtkinsRéalis

Saved company profile

Historical company information from a saved The Jobs API profile (LinkedIn/Crunchbase fields). It is not live-verified; figures may have changed. Missing values remain unknown.

Full company description

We are 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. ---

LinkedIn followers
522,517
People associated on LinkedIn
46,698
Reported office locations
  • 455 René-Lévesque Blvd W, Montreal, QC H2Z 1Z3, CA
Business categories
  • Construction
  • Innovation Management
  • Mining
  • Infrastructure
  • Transportation
  • Energy
  • Civil Engineering
Other recorded names
  • AtkinsRéalis
Profile identifies a recruitment agency
No
Reported total investment
1,128,343,771

Currency and observation date were not supplied; this is not a current valuation or a funding round.

We are 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. ---

FieldValue
IndustryEngineering Services
Company size10,001+ employees
HeadquartersMontreal, QC
Organization typePublic Company
Open jobs on Jobsy123
LinkedInView page
Job description

Job Description

Overview

We are currently looking for a Specialist Reactor Physicist to be 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.

Please note that this job posting is intended for you to express your interest in future opportunities within AtkinsRéalis

Your role

  • Perform and/or supervise the following calculations: Finite-reactor-core calculations, Kinetics calculations, Transport 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 for both diffusion and transport calculations).

  • Develop codes and 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.

  • Supervise, train and prepare training material for 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 methodologies and approaches to be used in reactor physics tasks.

  • Develop analysis basis plans.

  • Lead work and liaise with a multidisciplinary analysis team including project management.

About you

  • Master’s or Ph.D. degree or equivalent in Nuclear Engineering, or Science, from a university of recognized standing

  • 15+ years of relevant experience or 10 years of experience with an advanced degree.

  • Extensive experience with reactor physics codes WIMS, DRAGON, RFSP and MCNP. Experience with DONJON and KENO computer codes.

  • Experience with nuclear data library creation

  • Experience with few energy group constants

  • Knowledge of light water reactors, and small modular reactors is desirable

  • Must be conversant with computer environments.

  • Proficiency in both Linux and WINDOWS environments.

  • Ability to program especially in python, MATLAB, C++, or Fortran and familiarity with the Linux and Windows operating system.

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 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.

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