X-energy

Mechanical Engineer

• Create designs for various process support systems (chemical, piping, HVAC, ventilation, structural, electro-mechanical, automation and robotics)
• Perform load calculations, system sizing, equipment selection, and layout of ductwork, piping, and facility ventilation
• Support the process, facility design, and fuel development teams
• Create and document engineering designs (requirements, specifications, mechanical drawings, process flow diagrams (PFDs), piping and instrumentation diagrams (P&IDs), engineering calculations, etc.)
• Conduct energy modeling, simulations, and engineering calculations to enhance efficiency and sustainability
• Coordinate with design teams to ensure seamless integration of HVAC and other mechanical systems into the overall building design
• Support the development of fuel manufacturing processes
• Work with contractors to clarify design intent, resolve technical issues, and provide solutions to site challenges
• Select and order parts for process systems and assemble parts to build prototype designs
• Operate process equipment to perform design verification and validation and conduct quality assurance checks and site inspections
• Perform design engineering activities to support fuel manufacturing (reliability, maintenance, process improvement, failure analysis, cost estimation, etc.)
• Develop standard operating procedures and maintenance plans for process equipment and support systems
• Participate in teams to develop standardized engineering workflows and documentation
• Provide feedback and guidance to more junior team members and lead small groups of engineers to solve complex technical problems
• Perform other duties as assigned by manager

Mechanical and Process Design Engineer

Manager

• Plan, coordinate, and oversee the commissioning process for all systems and equipment within a project
• Develop and oversee the full scope commissioning program for a High Temperature Gas-Cooled Reactor technology or Fuel Manufacturing Facility
• Develop an Initial Test Plan (ITP), including pre-operational and startup procedures, processes and guidelines
• Lead and manage the full commissioning lifecycle from pre-commissioning to plant turnover, ensuring alignment with project milestones and regulatory requirements
• Collaborate closely with engineering and design teams to ensure design packages are commissioning-ready and reflect operational functionality
• Interface with construction planning to coordinate construction completion and system readiness for turnover
• Develop and maintain the commissioning schedule and integrate it with the overall project schedule
• Identify staffing needs for commissioning, lead recruiting, onboarding, and training of site commissioning personnel
• Serve as the primary liaison between the commissioning team, construction, design engineering, and the owner's team
• Manage the system turnover process, including documentation, testing verification, and final acceptance by the owner
• Hire, train, and manage staff who support the commissioning activities
• Perform other duties as assigned by manager

Mechanical and Process Design Engineer

Commissioning Manager