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X-energy is seeking professionals to join our Engineering team in the role of Mechanical Engineer IV, Thermodynamics. This role 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 the development of the systems and components through production including any necessary prototyping, testing, and commissioning.

This role will execute the core tasks and responsibilities listed below.

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.
Perform system-level thermodynamic analyses and process design using system-level simulation codes to support design iterations of X-energy developed reactors and supporting subsystems.
Support the sizing and analysis of components including heat exchangers, pumps, circulators, and turbomachinery.
Support the development of reactor and plant control philosophy and implement in plant models, simulations, and digital twins.
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.
Planning and performing 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.
Provide feedback and guidance to more junior team members.
Lead small groups of engineers to solve complex technical problems and deliver high quality engineering work products on time and within budget.
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.
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 ABET accredited university required
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
- Previous experience at X-energy exceeding performance standards may be in lieu of years of experience
Use of 1D thermo fluid software performing heat/mass and energy balance (e.g., RELAP, Flownex, NPSS, SINDA/FLUINT, Flomaster, or similar) required
Experience with C#, C++ scripting is preferred but not required

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.

Location: 530 Gaither Road, Rockville MD

Travel Expectations: 10%

Job Classification: Fulltime Exempt
Hours: 8:00am ET to 5:00pm ET, Monday - Friday

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.

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