Senior Mechanical Engineer

Job Description Overview We are seeking a Senior Mechanical Analyst Energy - Remote. This remote position is based out of our Oak Ridge, TN office. Your role AtkinsRéalis US Nuclear is the subsidiary of AtkinsRéalis focused on serving government and commercial clients within the Nuclear sector in the United States. We are focused on being recognized as a premier nuclear solutions company in the United States, delivering engineering, operations, and project management services. Serves both legacy and new build nuclear clients who are designing, building, upgrading, operating and maintaining nuclear power generation and fuel cycle assets. We are a growing business, building on the foundation of our US government fuel cycle business, our international position as an Original Equipment Manufactor (OEM) and nuclear reactor technology provider, and our world-wide nuclear new build and legacy nuclear fleet maintenance experience. Develops, designs and validates structural and fluid dynamics models for small modular reactors and nuclear fuel cycle facility projects. Performs structural analysis and steady-state and transient computational fluid dynamics (CFD) simulations of single and multiphase flow to verify safety and performance requirements for small modular reactors. Evaluates CFD simulations and coupled fluid-structure interaction (FSI) analyses to assess the structural integrity of critical reactor systems. Upskills early-career engineers and mentor engineers at multiple experience levels on CFD modelling and troubleshooting. Prepares, checks and/or approves CFD and mechanical structural analysis calculations. Ensures that design deliverables are of a high standard and compliant with relevant standards, regulations and customer specific standards, including nuclear quality assurance standards. Produces documentation that is technically accurate, grammatically correct, correctly formatted and professionally presented. Develops resolutions to technical issues and ensure necessary change control is implemented. Performs other duties as assigned. About you Bachelor's or Master's degree in Mechanical Engineering. Minimum of ten years post-baccalaureate experience. Engineering support to nuclear facility design, construction or operations. Strong communication skills in a challenging, multi-tiered environment. Strong organizational skills. Knowledge of key NRC regulations, design codes and standards for commercial nuclear facilities required. Expert user of related design software codes, including ANSYS FLUENT/CFX and GOTHIC. Design for Commercial and Department of Energy nuclear reactor projects preferred. Design for Commercial and Department of Energy nuclear fuel cycle facilities preferred. Nuclear Steam Supply System (NSSS) Original Equipment Manufacturer (OEM) experience preferred. Must be a U.S. citizen in order to be considered. Rewards & benefits At AtkinsRéalis, our values-Safety, Integrity, Collaboration, Innovation, and Excellence-are more than just words. They are the foundation of who we are and how we work. These principles shape our culture, guide our decisions, and inspire us to create an environment where every team member feels empowered to grow, succeed, and make a meaningful impact. Depending on your employment status, AtkinsRéalis benefits may include medical, dental, vision, company-paid life and short- and long-term disability benefits, employer-matched 401(k) with 100% vesting, employee stock purchase plan, Paid Time Off, leaves of absences options, flexible work options, recognition and employee satisfaction programs, employee assistance program, and voluntary benefits. You can review our comprehensive benefits page here. 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 Expected compensation range is between $113,000 - $188,000 annually depending on skills, experience, and geographical location. EEO Statement AtkinsRéalis is an equal opportunity, Drug-Free employer EOE/Veteran/Disability. Please review AtkinsRéalis' Equal Opportunity Statement here. Company Culture 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. Capabilities Created by the integration of long-standing organizations dating back to 1911, AtkinsRéalis is a world-class engineering services and nuclear 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 whole life cycle of an asset including consulting, advisory & environmental services, intelligent networks & cybersecurity, design & engineering, procurement, project & construction management, operations & maintenance, decommissioning and capital. The breadth and depth of our capabilities are delivered to clients in strategic sectors such as Engineering Services, Nuclear and Capital. News and information are available at Atkinsrealis or follow us on LinkedIn. #J-18808-Ljbffr