{"id":2543703,"url":"https://alion.io/job/atkinsrealis-senior-mechanical-engineer-4","title":"Senior Mechanical Engineer","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":413,"ghost_share":0.002,"stale_share":0.559,"repost_share":0.005,"time_to_fill_p50_days":43,"computed_at":"2026-10-23T05:54:15Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"on_site","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":107000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":447},"experience_years_min":15,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-10-14T16:18:15Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-21T23:56:26Z","board_verified":true,"closed_at":null,"days_open":8,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":8},"description":"Job Description\nAre you looking for a company that works on major engineering projects all over the world? Do you want to make a difference by improving the daily lives of communities worldwide? Are you seeking to join an inclusive and diverse team that you can truly count on? You’ve come to the right place!\nCome join us in reshaping the future with AtkinsRéalis. AtkinsRéalis is dedicated to engineering a better future for our planet and its people.\nJob Description\nAtkinsRéalis is looking to hire a Senior Engineer. This position requires an experienced, self-motivated professional capable of working independently, leading complex engineering activities, and providing technical guidance to junior staff. The successful candidate will work in a fast-paced, multidisciplinary team environment delivering engineering services for nuclear power plants within a matrix organization.\nJob Responsibilities:\nPrepare and review engineering documents, calculations, specifications, reports, drawings, procedures, and other technical deliverables.\nLead conceptual, preliminary, and detailed design activities for nuclear power plant systems, structures, and components.\nDefine engineering scope, technical requirements, deliverables, budgets, schedules, and resource needs.\nCoordinate multidisciplinary engineering activities and resolve technical and interface issues with clients, suppliers, project teams, and other stakeholders.\nSupport engineering changes through the applicable engineering change control processes, from concept development through implementation, commissioning, closeout, and availability for service.\nPerform and review technical assessments, calculations, design evaluations, and verification activities in accordance with applicable procedures.\nProvide pre-order and post-order engineering support, including preparation of procurement documents, technical bid evaluations, supplier document reviews, and resolution of design deviations and non-conformances.\nSupport manufacturing, fabrication, assembly, testing, installation, commissioning, and field activities, including site and supplier visits as required.\nEnsure work complies with applicable codes, standards, regulatory requirements, quality-assurance requirements, and client and company procedures.\nInterface directly with client engineering representatives and communicate technical matters clearly to peers, management, suppliers, and other stakeholders.\nMonitor and report on engineering progress, performance, risks, issues, and staffing needs to engineering and project management.\nMentor junior engineers and technical staff, provide technical guidance, and contribute to knowledge transfer and continuous improvement.\nWhy choose AtkinsRéalis as an employer?\nBecause we offer:\nThe opportunity to work on various major projects for internal and external clients.\nAn exciting environment where work-life balance is important.\nA wide array of learning and development opportunities.\nCompetitive pay, flexible benefits, an employee share plan, and a defined contribution pension plan.\nA work environment focused on health and safety.\nAbout You\nBachelor’s degree in an applicable engineering discipline from an accredited university.\nRegistered Professional Engineer in a province of Canada and a member in good standing, or eligible for registration.\nA minimum of 15 years of relevant engineering experience, including significant experience in the nuclear industry and in a senior design or technical role.\nDemonstrated experience delivering modifications or engineering work for nuclear facilities through the full engineering lifecycle.\nStrong knowledge of applicable nuclear codes, standards, regulatory requirements, engineering change control processes, and quality-assurance practices.\nDemonstrated ability to prepare and review complex engineering deliverables and perform or oversee design verification.\nExperience coordinating multidisciplinary work and interfacing with clients, suppliers, project teams, and regulatory or authorized inspection organizations, as applicable.\nStrong technical leadership, problem-solving, organizational, and decision-making skills.\nExcellent written and oral communication skills, with the ability to present technical information clearly.\nResults-driven, self-motivated, and able to work independently and collaboratively in a matrix organization.\nWillingness to travel to and potentially work at project, client, or supplier sites to meet business needs.\nAdditional, preferred qualifications:\nAdvanced degree in an applicable engineering discipline.\nExperience with pressure-boundary systems or components, equipment qualification, seismic or environmental qualification, design registration, or other specialized nuclear engineering activities.\nQualification or recent experience as a Specialized Professional Engineer under an applicable code or standard.\nExperience supporting procurement, manufacturing, fabrication, testing, installation, commissioning, and field engineering activities.\nKnowledge of configuration management, systems engineering, constructability, operability, maintainability, and lifecycle considerations.\nStrong presentation, facilitation, mentoring, and public-speaking abilities.\nAre you up for this challenge? Apply today and join our team to help engineer a Better Future for our Planet and its People.\nAbout AtkinsRéalis\nCreated by the integration of long-standing organizations dating back to 1911, AtkinsRéalis is a world-leading professional services and project management company dedicated to engineering a better future for our planet and its people. We create sustainable solutions that connect people, data, and technology to transform the world’s infrastructure and energy systems. We deploy global capabilities locally to our clients and deliver unique end-to-end services across the entire life cycle of an asset, including consulting, advisory and environmental services, intelligent networks and cybersecurity, design and engineering, procurement, project and construction management, operations and maintenance, decommissioning, and capital. The breadth and depth of our capabilities are delivered to clients in key strategic sectors such as Engineering Services, Nuclear, Operations and Maintenance, and Capital.\nAt 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.\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 learn 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\nWorker Type\nEmployeeJob Type\nRegularAt AtkinsRéalis, we seek to hire individuals with diverse characteristics, backgrounds and perspectives. 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