X-energy

Senior Mechanical Engineer

Rockville, MD

full time

$148,500-$206,250

On-site

Nuclear Electric Power Generation

About This Job

X-energy is seeking a Senior Mechanical Engineer responsible for the 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.

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.

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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.

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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.

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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.

The role may include specialization in one or more of the following areas:

Structural Design

•

Perform and assist structural analysis for systems, structures, and components of X-energy developed reactors, including pressure vessels and piping, reactor internals, nuclear fuel, and high temperature materials such as graphite.

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Use engineering tools, including finite element analysis (FEA) simulation software, hand calculations, and engineering judgment, to assess stress, deformation, degradation behavior, and lifetime mechanical performance of these nuclear reactor components.

Thermal Hydraulics

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Responsible for providing heat transfer, fluid mechanics, and particulate mechanics analysis to support the design of various X-energy developed reactors and supporting subsystems.

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Responsible for development, testing and verification of CFD models to support design and analysis which will form part of the reactor licensing basis (steady state and transient conditions, design basis events, anomalies, etc.).

Thermosystems

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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.

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Support the sizing and analysis of components including heat exchangers, pumps, circulators, and turbomachinery.

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Support the development of reactor and plant control philosophy and implement in plant models, simulations, and digital twins.

Mechanical Design

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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.

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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.

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Create and maintain CAD-generated engineering models of reactor SSCs.

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Support the assessment of SSCs for manufacturability as well as assembly and integration considerations at the direction of project leads.

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Write and develop design documentation including design basis documents, technical reports, calculations, and drawings in accordance with applicable procedures.

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Develop Verification and Validation (V&V) plans for analytical tools and support qualification of toolset.

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Perform work in accordance with X-energy quality procedures for design and configuration management to ensure project quality requirements are met.

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Provide independent reviews and acceptance reviews of engineering deliverables and data.

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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.

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Teach and mentor more junior team members.

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Stay abreast of industry and academic trends, breakthroughs, and best practices.

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Maintain professional demeanor and behavior at all times in all forms of communication.

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Perform other duties as assigned by manager.

Qualifications

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Bachelor’s degree in mechanical engineering, or related engineering discipline (e.g., nuclear aerospace, chemical, etc.) from an accredited institution required.

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Typically, fifteen years of experience in an engineering role required.

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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.

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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.

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Previous experience at X-energy exceeding performance standards may be in lieu of years of experience.

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Proficiency with engineering hand calculations is required.

Experience and/or knowledge in a minimum of one of the following areas:

Thermodynamics

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Use of 1D flow-solvers performing heat/energy and mass balance (e.g., RELAP, Flownex, NPSS, SINDA/FLUINT, Flomaster, or similar).

Mechanical Design

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Designing and developing mechanical or fluid systems, assemblies, or components.

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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.

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Hardware ownership including manufacturing and testing oversight.

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Use of Computer-Aided Design (CAD) and product lifecycle management (PLM) software.

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E.g. UG/NX, SolidWorks, Pro-Engineer, Teamcenter, Windchill, or similar.

Structural Analysis

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Analytical experience with structural analysis hand calculations and structural FEA software programs (e.g., ANSYS, ABAQUS, NASTRAN, FEMAP, CAESAR, ROHR, LS-DYNA, PIPESTRESS).

Thermal Hydraulics

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Use of Computational Fluid Dynamics (CFD) analysis codes (e.g., STAR-CCM+, Fluent, or similar).

Mechanical Process Equipment

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Piping, Ducting, HVAC, Fire Suppression, Pumps, Valves

Location:
530 Gaither Road, Rockville, MD

Work Schedule:

4 days a week in office

Travel Expectations:

up to 25% (International)

Hours:
8:00am-5:00pm, Mon-Fri

Senior Mechanical Engineer

About This Job

Responsibilities

Structural Design

Thermal Hydraulics

Thermosystems

Mechanical Design

Qualifications

Thermodynamics

Mechanical Design

Structural Analysis

Thermal Hydraulics

Mechanical Process Equipment

Location: 530 Gaither Road, Rockville, MD

Travel Expectations: up to 25% (International)

Hours: 8:00am-5:00pm, Mon-Fri

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Location:
530 Gaither Road, Rockville, MD

Travel Expectations:

up to 25% (International)

Hours:
8:00am-5:00pm, Mon-Fri