Engineer III, Plant and Process Design

X-energy LLC is hiring a Plant and Process Design Engineer to support its Nuclear Auxiliary Systems Group. This role is responsible for designing and developing mechanical systems and components. It includes identifying requirements, conceptualizing system architecture, and developing the layout through final design, performing process calculations, selecting and specifying equipment components ensuring they meet all technical specifications and program/project requirements. Additionally, this role oversees the implementation of rigorous, repeatable System Engineering processes, ensures technical integration, monitors risks, and provides system‑level oversight and support.

The position is responsible for managing the entire effort to bring the system from initial requirements to a fully functional operational state in accordance with X‑energy design guides and standards and sound engineering principles.