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Senior Technical Fellow, Chief Engineer

Job in Rockville, Montgomery County, Maryland, 20849, USA
Listing for: X-energy
Full Time position
Listed on 2025-12-01
Job specializations:
  • Engineering
    Systems Engineer, Quality Engineering, Electrical Engineering
Job Description & How to Apply Below

X-energy LLC conducts a thorough recruiting process and will never issue offers without an interview to discuss qualifications and responsibilities. All applications will be submitted via our company career page,  We will never ask you to provide payment information as part of the recruiting process. If anyone claiming to represent X-energy directs you in a manner otherwise, please contact us at

Job Description

This role is responsible for ensuring that the implementation of X-energy’s reactors and related system solutions comply with sound nuclear engineering practice, adhere to engineering standards defined by the company and industry, and are implemented in a consistent, repeatable way that leads to high product safety, quality, reliability, technical and programmatic efficiency. The Chief Engineer may be called upon to act as design authority: generate technical alternatives;

lead design issue resolution; conduct manufacturability, constructability, and maintainability reviews; evaluate application of new technology and IP generation to benefit product development/project implementation; address operations and fielded product performance issues; review/approve technical changes to a product or program baseline; and other issues to ensure the above-mentioned goals are met.

Job Profile Tasks/Responsibilities
  • As Design Authority, ensure technical adequacy and design control for the project. This includes critiquing and reviewing requirements, technical arbitration for engineering disputes, implementing and maintaining configuration control, and concurrence of high-level methodology.
  • Chair design reviews, ensure proper implementation of the X-energy Systems Engineering Management Plan and related engineering policies/procedures, evaluate engineered solutions against
    1) requirements allocated to the solution,
    2) fidelity of the solution and methods applied, and
    3) maturity of the solution given the phase/review being performed. Build the review board composition based on system under review, make recommendations and define corrective actions through issuance of Action Items/Requests for Action (RFAs) to ensure project technical compliance. Validate RFA acceptance, response schedule, and validate incorporation of review board recommendations.
  • Assist in the conduct of the project Change Control Board (CCB). Evaluate recommended changes, determine and/or independently analyze their impacts on performance and performance margin, soundness of design change, how changes affect project risk. As a precursor to the CCB, conduct evaluation of, or review team evaluations of alternatives to understand the basis for alternative selection, and how the result may compare to the results from alternative methods.
  • Provide Internal Audit capability for the guarantee of configuration control, methodology and technical solution validity as well as scope, schedule, and budget alignment. Support external audits, from a technical/QA/manufacturability/testability perspective, to ensure vendors and partners possess the capability to perform assigned work and meet quality flow-downs.
  • Identify technical and/or implementation issues that may threaten X-energy’s ability to deliver safe, efficient, manufacturable, constructable, operable, and maintainable project solutions. As appropriate, evaluate risks associated with alternatives; conduct independent analyses to scope, understand, and resolve risks; identify verification methods and recommend alternative techniques/solutions and mock-up development for project incorporation.
  • As directed, lead critical issue initiatives, tiger/high impact teams, and conduct alternatives assessments to ensure project risk is quantified, addressed, and mitigated. This may include leadership of key evaluations that cannot be addressed by a standalone X-energy organization (e.g., cross-functional, multi-disciplinary design issue) or must be addressed at a higher level of the organization. Drive these evaluation teams to successful issue resolution;

    document issue resolution through DITs, input to topical reports; define qualification/penalty tests; ensure changes are documented through the…
Position Requirements
10+ Years work experience
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