{"id":2829516,"url":"https://alion.io/job/atkinsrealis-specialist-radiation-physicist","title":"Specialist Radiation 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":"A","score":86,"open_postings":408,"ghost_share":0,"stale_share":0.556,"repost_share":0.002,"time_to_fill_p50_days":43,"computed_at":"2026-10-21T05:46:15Z"}},"role":"Science & Research","role_family":"Science & Research","seniority":"staff","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":63000,"max_usd":157000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":263},"experience_years_min":15,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Fortran","optional":false},{"name":"Linux","optional":false},{"name":"MATLAB","optional":false},{"name":"Microsoft Office","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-04-27T00:00:00Z","employer_posted_date":"2026-04-27","last_verified_at":"2026-10-21T02:56:23Z","board_verified":true,"closed_at":null,"days_open":177,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":177},"description":"Job Description\nOverview\nWe are currently seeking a SpecialistRadiation 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.\nPlease note that this job posting is intended for you to express your interest in future opportunities within AtkinsRéalis.\nYour role\nLead, 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.\n\nProduce high quality reports effectively summarizing technical information.\n\nPresent results to internal and/or external stakeholders.\n\nCollate, assimilate, and summarize results from existing analyses.\n\nFollow the relevant procedures, guidelines and standards governing the work being performed.\n\nDevelop, adapt, or modify computer codes for specific applications and to solve new problems.\n\nAbout you\nMasters or Ph.D. degree in Physics, Engineering Physics, Nuclear Engineering, and Registered Professional Engineer in Ontario (or in progress to attain).\n\n15+ years of relevant experience performing neutronics, radiation transport, dose, activity transport and/or dispersion model calculations or 10 years of experience with an advanced degree.\n\nExpertise 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.\n\nWorking 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.\n\nConversant in the codes and Standards used in safety analysis.\n\nAbility to program especially in python, MATLAB, C++, or Fortran and familiarity with the Linux operating system.\n\nEligible 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.\n\nExperience with rehabilitation and decommissioning activities and supporting station operations.\n\nExperience working at a nuclear facility, performing radiation transport and shielding calculations, and code development including source control and testing.\n\nKnowledge of the nuclear regulatory framework, along with codes and standards applicable for nuclear work in Canada.\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.\nEnjoy 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 of diverse opportunities for training and professional development to grow your skills and expertise.\nAnd take advantage of our hybrid working culture and generous time-off policies to balance a fulfilling career with your personal life.\nBe 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. 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.","description_format":"text","description_chars":4923,"description_truncated":false,"requirements":{"experience_years_min":15,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":["Hybrid work","Professional development"],"hiring_locations":[{"name":"Canada","iso":"CA","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Nuclear Energy","Transport Infrastructure","Civil & Structural Engineering","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-10-19T01:59:25Z"}],"visa":[{"country":"CA","licensed_sponsor":true,"evidence":"Positions approved through LMIA in 12 months: 5","filings_12m":5,"filings_prev_12m":6,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"High Wage","cap_exempt":false,"checked_at":"2026-10-03T21:10:52+00:00","sources":["ESDC: employers issued a positive LMIA"],"filings_for_role_12m":0}],"liveness":{"score":11,"band":"cold","label":"Long shot","p_open":1,"p_active":0.379,"p_room":0.28,"age_days":177,"expected_fill_days":43,"reasons":["conf:2","stale_co","velocity","win:tail","crowd:brand"],"computed_at":"2026-10-21T05:46:15Z"},"pay":null,"html_url":"https://alion.io/job/atkinsrealis-specialist-radiation-physicist","json_url":"https://alion.io/job/atkinsrealis-specialist-radiation-physicist.json","meta":{"generated_at":"2026-10-21T07:32:48Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":10730,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-22T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":8926},"rest":"https://alion.io/mcp/rest/get_company?id=8926"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fatkinsrealis-specialist-radiation-physicist"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fatkinsrealis-specialist-radiation-physicist"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fatkinsrealis-specialist-radiation-physicist"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/atkinsrealis-specialist-radiation-physicist\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fatkinsrealis-specialist-radiation-physicist"}]}