{"id":3036202,"url":"https://alion.io/job/atkinsrealis-reactor-physicist-2","title":"Reactor Physicist","company":{"id":8926,"name":"AtkinsRéalis","domain":"atkinsrealis.com","url":"https://alion.io/company/atkinsrealis","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":84,"open_postings":427,"ghost_share":0.002,"stale_share":0.621,"repost_share":0.009,"time_to_fill_p50_days":42,"computed_at":"2026-10-28T05:59:10Z"}},"role":"Energy","role_family":"Energy","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Mississauga, Canada"],"countries":["CA"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":74000,"max_usd":131000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":15},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Fortran","optional":false},{"name":"MCNP","optional":false},{"name":"Linux","optional":true}],"status":"live","first_seen_at":"2026-09-11T00:00:00Z","employer_posted_date":"2026-09-11","last_verified_at":"2026-10-28T12:44:14Z","board_verified":true,"closed_at":null,"days_open":47,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":47},"description":"Job Description\nCandu 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.\nYour role:\nPerform and/or supervise the following calculations: Finite-reactor-core calculations, Kinetics calculations, Advanced-fuel-cycle calculations, Monte Carlo calculations.\n\nPrepare inputs, run reactor physics computer codes\n\nDevelop, adapt and modify FORTRAN computer codes as required for specific applications (e.g., to implement new methods or perform new types of calculations)\n\nDevelop methodologies and perform reactor physics analyses to support design and commercial activities\n\nDocument analyses in technical notes and reports, and present results at meetings\n\nEstimate, monitor schedules and assign work to meet completion date, perform varied work assignments effectively and respond quickly to changing project needs\n\nPropose/develop approaches to be used on reactor physics tasks\n\nDevelop analysis basis plans\n\nAbout you:\nA Relevant honours degree from a university of recognized standing in Physics or Nuclear Engineering or equivalent;\n\nA 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\n\nExperience with DONJON and KENO codes is very desirable\n\nMust be conversant with computer environments; proficiency in both Linux and WINDOWS environments is a strong asset\n\nProficiency in computer programming, especially FORTRAN, is very desirable Excellent oral and written communication skills are required\n\nAbility 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\n\nStrong problem solving skills are essential\n\nAbility to show initiative while working in a team environment\n\nAbility to work to budget and schedule\n\nFull commitment to working in a formal QA environment.\n\nReward & benefits\nExplore 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.\nMake 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.\nAbout AtkinsRéalis\nWe'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.\nFind out more.\nAdditional information\nAtkinsRéalis 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.\nBy submitting your personal information to AtkinsRéalis, you confirm that you have read and accept our Privacy Notice.\nAppropriate 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).\nSuccessful 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.\nWorker Type\nEmployeeJob Type\nRegularAt AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. 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