Mechanical Systems Design Engineer

Job Description The Mechanical Systems Design Engineer is responsible for the engineering design and development of mechanical systems, structures, and components. This includes concept development, evaluation of concepts, analysis of systems, structures, and components for their ability to perform their intended function, and ensuring they meet all technical specifications and requirements. The role will ensure development of the systems and components through production, including any necessary prototyping, testing, and commissioning. Responsibilities Develop mechanical/physical concepts, design and support development of processes to create or identify structures, systems, and components (SSCs) for use in nuclear products or facilities with a focus on nuclear safety. Identify, collect, and document applicable requirements, interfaces, design basis and criteria by coordinating with key stakeholders/systems engineers and support identifying applicable industry codes and standards and the direction of project leads and systems engineers. Plan and perform the analysis required to assess aspects of the SSCs to ensure they can perform their intended functions and meet technical specifications and design requirements. Perform computations utilizing hand calculations and analytical tools for structural, thermal, hydraulic, and other scoping calculations as required at the direction of project leads and systems engineers to ensure SSCs can meet technical requirements. Develop innovative mechanical solutions to refine and deploy concepts, technologies, and designs associated with X-energy developed reactors, including pressure vessels and piping, reactor internals, nuclear fuel, and high temperature materials such as graphite. Integrate design activities across engineering team members, partners, and suppliers and perform supporting scoping and sizing calculations to downselect design features to meet design requirements using guidance from consensus codes and standards. Create and maintain CAD-generated engineering models of reactor SSCs. Support the assessment of SSCs for manufacturability as well as assembly and integration considerations at the direction of project leads. Write and develop design documentation including design basis documents, technical reports, calculations, and drawings in accordance with applicable procedures. Develop Verification and Validation (V&V) plans for analytical tools and support qualification of toolset. Perform work in accordance with X-energy quality procedures for design and configuration management to ensure project quality requirements are met. Provide independent reviews and acceptance reviews of engineering deliverables and data. Lead the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document, without close supervision and extensive latitude for independent judgement. Teach and mentor more junior team members. Stay abreast of industry and academic trends, breakthroughs, and best practices. Maintain professional demeanor and behavior at all times in all forms of communication. Perform other duties as assigned by manager. Qualifications Bachelor’s degree in mechanical engineering, or related engineering discipline (e.g., nuclear aerospace, chemical, etc.) from an accredited institution required. A master’s degree in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of two years of experience. A Ph.D. in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of three years of experience. Previous experience at X-energy exceeding performance standards may be in lieu of years of experience. Proficiency with engineering hand calculations is required. Use of Computer-Aided Design (CAD) and product lifecycle management (PLM) software. Hardware ownership including manufacturing and testing oversight. One plus years of demonstrated hands‑on experience developing and delivering hardware or manufacturing processes in a production environment is required. May include industry internship experience, hobby, or participation in collegiate engineering projects such as: Formula SAE, Baja SAE, Design Build Fly, Rocket Club, etc. Designing and developing mechanical or fluid systems, assemblies, or components. Preferred Skills Experience with commercial nuclear power plant operations. Experience using hand‑tools and handling equipment to assemble mechanical systems or components. Familiarization with metrology techniques for inspection of components, performing fit checks, and troubleshooting mechanical issues. Familiarization with selection and use of instrumentation for testing and characterizing performance of mechanical systems and components. Experience working in hazardous industrial or manufacturing environments with prior training in areas such as: Pressurized or Stored Energy, High/Low Voltage Safety, Lockout/Tagout, Hoist/Rigging Operations, Machining, Hazard Awareness, etc. Professional experience in commercial nuclear power as well as design, qualification, licensing, and construction to ASME Boiler & Pressure Vessel Code (BPVC) Section III and/or Section VIII. Experience with NRC regulations and licensing requirements for safety‑related systems. Experience with design using ASME BPV Code, ASME B31.1 or B31.3, and other industry standards. Experience with mechanical design of heat exchangers, boilers, or steam generators. Experience with Mechanical Process Equipment (Piping, Ducting, HVAC, Fire Suppression, Pumps, Pressure Vessels, Piping, Valves, Structural Supports) selection, sizing, and specification development. Experience with design of control, gate, globe, ball, or check valves for high‑pressure and high‑temperature fluid or gas applications. Experience with procurement and manufacturing oversight of pressure vessel or large metallic components. Hands‑on experience with graphite or other non‑metallic components, fabrication or assembly sequencing, and/or tooling development preferred. Experience designing and executing vibration, shock, and modal test programs to qualify mechanical components for high‑reliability applications. Job Level Qualifications Level III Level Tasks/Responsibilities Execute the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document, with minimal supervision. Provide ownership, responsibility, and accountability over technical scope involving the coordination of multiple individual contributors working in a specific area. Level Minimum Qualifications Typically, five years of experience in an engineering role required. A master’s degree in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of two years of experience. A Ph.D. in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of three years of experience. Level IV Level Tasks/Responsibilities Lead the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document, without close supervision and some latitude for independent judgement. Provide feedback and guidance to more junior team members with the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document. Lead small groups of engineers to solve complex technical problems and deliver high quality engineering work products on time and within budget. Level Minimum Qualifications Typically, ten years of experience in an engineering role required. A master’s degree in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of two years of experience. A Ph.D. in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of three years of experience. Level V Level Tasks/Responsibilities Lead the execution of the core tasks and responsibilities listed in the Job Profile Task/Responsibilities section of this document, without close supervision and extensive latitude for independent judgement. Teach and mentor more junior team members. Stay abreast of industry and academic trends, breakthroughs, and best practices. Level Minimum Qualifications Typically, fifteen years of experience in an engineering role required. A master’s degree in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of two years of experience. A Ph.D. in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of three years of experience. Previous experience at X-energy exceeding performance standards may be in lieu of years of experience. Location 530 Gaither Road, Rockville MD Work Site Expectations 4 days in office Travel Expectations Up to 10% as needed Hours Standard office schedule 8:00am-5:00pm ET, Mon‑Fri Compensation As required by Maryland and other applicable state law, X Energy, LLC lists the expected compensation range for a publicly advertised job opportunity based upon the job requirements (e.g. education/training, experience, skill sets, etc.). Individual candidates who meet the job requirements for the posted position will be offered a salary within this range based on their respective levels of education/training, experience, and other qualifications unique to them. Salary ranges may vary based on the specific office location and region referenced in the posting to take into consideration differences in cost of living and may not be reflective of all regions. Please note that compensation ranges listed for US job postings reflect base salary only and do not include benefits or other incentives. Level III: $115,000 - $140,000 Level IV: $140,000 - $170,000 Level V: $170,000 - $200,000 Position Job Classification Full time - Exempt Benefits X Energy, LLC offers a robust benefits package that includes a 401K plan with an employer match, Medical/Dental/Vision Insurance, Life and Disability Insurance, Paid Time Off, and a Tuition Reimbursement/Professional Development policy that supports the continuing education of our employees. An Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. X Energy, LLC participates in E-Verify. Right to work: If you have the right to work, review e-verify.gov. E-Verify Participation Poster English and Spanish. #J-18808-Ljbffr X-energy