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      X Energy

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      X Energy interviews FAQs

      • Thermal Hydraulics Engineer applicants have rated the interview process at X Energy with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 50% positive. This is according to Glassdoor user ratings.
      • Candidates applying for Thermal Hydraulics Engineer roles take an average of 90 days to get hired, when considering 1 user submitted interviews for this role. To compare, the hiring process at X Energy overall takes an average of 25 days.
      • Here are the most commonly searched roles for interview reports -

        1. Engineer(5) ;
        2. Systems Engineer(5) ;
        3. Mechanical Engineer(4) ;
        4. Administrative(2) ;
        5. Project Manager(2) ;
        6. Technician(2) .


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      Thermal Hydraulics Engineer Interview

      Dec 12, 2025
      Anonymous Interview Candidate
      No offer
      Positive experience
      Average interview

      Application

      I applied online. The process took 3 months. I interviewed at X Energy in Nov 2025

      Interview

      I had three rounds of interviews. The first was with HR, who was a very respectful and pleasant person to speak with. After that, I met with two engineers. They were knowledgeable, professional, and their questions were based on real engineering scenarios. They were patient throughout the interview and respectfully repeated or clarified their questions whenever needed. Then I had another interview with a manager. Based on his background, I expected more technical engineering questions, which was exactly the case. He was respectful, highly knowledgeable, and the depth of his questions clearly reflected his expertise. Although they ultimately rejected my application, it was still a valuable and positive experience. Everyone I interacted with was professional, and they responded to my emails quickly with detailed and respectful communication. I wish their company all the best.

      Jobs at X Energy

      17 jobs in United States
      CFD/ Thermal Hydraulics Engineer III
      Rockville, MD
      ·
      $115K - $140K /yr
      (Employer provided)
      View job
      Mechanical Design Engineer – Reactor Internals (In-Vessel Shielding)
      Rockville, MD
      ·
      $115K - $140K /yr
      (Employer provided)
      View job
      CFD Engineer III-V (Fluid Vibrations Analysis)
      Rockville, MD
      ·
      $115K - $200K /yr
      (Employer provided)
      View job
      Thermal Analysis Team Lead
      Rockville, MD
      ·
      $140K - $180K /yr
      (Employer provided)
      View job
      Mechanical Engineer, Graphite
      Rockville, MD
      ·
      $95K - $170K /yr
      (Employer provided)
      View job
      View all Thermal Hydraulics Engineer Jobs