{"id":2831628,"url":"https://alion.io/job/atkinsrealis-specialist-engineer-reactivity-control-units","title":"Specialist Engineer - Reactivity Control Units","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":85,"open_postings":412,"ghost_share":0,"stale_share":0.578,"repost_share":0.019,"time_to_fill_p50_days":45,"computed_at":"2026-11-05T05:54:30Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","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":77000,"max_usd":129000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":72},"experience_years_min":15,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ASME NQA-1","optional":false},{"name":"GD&T","optional":false}],"status":"live","first_seen_at":"2026-04-21T00:00:00Z","employer_posted_date":"2026-04-21","last_verified_at":"2026-11-05T15:01:18Z","board_verified":true,"closed_at":null,"days_open":198,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":198},"description":"Job Description\nOverview\nWe are currently seeking a Specialist Engineer who specializes in the design of CANDU Reactivity Control Units (i.e., Reactivity Mechanisms), providing strategic technical leadership, defining engineering approaches, and serving as a primary technical interface with organizations inside and outside the company on complex, large-scale refurbishment and new build nuclear projects.\nYour role\nActs as a recognized technical leader in the design of CANDU reactor components, systems, and structures across complex projects.\nIs recognized as a Subject Matter Expert for CANDU Reactivity Control Units and maintains effective technical liaison with internal and external organizations.\nProvide technical leadership and mentoring of junior, intermediate and senior engineers, influencing and aligning engineering practice across projects.\nDevelops new engineering concepts and design modifications to meet functional, regulatory, and lifecycle requirements.\nDevises and champions new approaches to complex or novel problems within the engineering specialty.\nLeads the resolution of critical and high-risk engineering issues, providing timely, and defensible engineering solutions/direction.\nAddresses complex engineering challenges involving conflicting requirements, non-standard materials, and difficult coordination constraints, establishing technically sound resolutions.\nEvaluates and confirms the feasibility, robustness, and technical soundness of proposed engineering methods and approaches.\nApply extensive knowledge of engineering precedents and related disciplines to establish technical judgement and direction.\nProvides guidance on applicable codes, standards, and regulatory requirements related to the discipline.\nPerforms critical reviews of design documents, calculations, drawings, and analysis reports, resolving complex or precedent-setting technical issues.\nReview engineering assessments for the design and integrity of nuclear pressure boundary components.\nReview design documentation to ensure client requirements are met and initiate any corrective actions as necessary.\nSupport technical and commercial interfaces with the client.\nTo define work scope, plan activities, and coordinate engineering work for all design phases within major projects or across projects of considerable scope and complexity.\nSupports and guides the execution of technical engineering work packages to deliver within approved scope, budget, and schedule.\nIs responsible for reporting technical progress, risks and schedule status to technical and project management.\nContributes to engineering budgets and provides technical input for defined work packages.\nParticipates in development, interpretation, and advancement of engineering standards and contributes to technical forums within the area of specialty.\nContributes technical input to operational and strategic planning processes, influencing engineering direction and resource deployment.\nParticipate in the training and development of engineering staff.\nOperates with minimal technical supervision, receiving guidance primarily on overall objectives, and critical issues.\nAbout you\nA Bachelor’s or Graduate degree in Mechanical Engineering (or related discipline such as Materials or Nuclear Engineering) from a university of recognized standing.\nLicensed as a Professional Engineer in the Province of Ontario.\nMinimum 15 years of related work experience with CANDU reactor design and/or ASME pressure vessel design.\nExperience in classical stress calculation. Knowledge of first principles related to solid mechanics such as relationship between stress and strain, material properties, fatigue, fracture mechanics, creep.\nExperienced in producing drawings (including dimensioning and tolerancing). Knowledge of GD&T is preferred.\nKnowledge of CANDU Reactivity Control Units design is preferred.\nFamiliarity with AtkinsRéalis/Candu Energy Quality Assurance programs and processes and procedures.\nFamiliarity with ASME Section III pressure boundary design and CSA N285.0.\nAbility to work as part of a multi-disciplinary team.\nAbility to work independently and demonstrate problem-solving skills.\nDrive for continuous learning by own initiative.\nExcellent time management skills and ability to prioritize work within project constraints.\nStrong written and oral communication skills.\nRewards & 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. 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