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Jobs at X-energy

X-energy has 111 open roles on its own career site, as read by hirly on 2 October 2026 — most of them in United States.

Last updated 2 October 2026 · X-energy's career site (opens in a new tab)

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Open roles
111
New, last 7 days
11
New, last 30 days
56
Say remote
0%

A role is new on the date its posting gives, and never before hirly first saw it; where a posting gives no date, on the day hirly first saw it.

Compared with four weeks ago

No trend yet: hirly compares today with its own count from 28 days ago, and shows one only when it has a daily record that long for at least 20 open roles. It has read this career site since 1 September 2026.

By kind of work

  1. Engineering10
  2. Supply chain5
  3. Engineering management4
  4. Sales2
  5. Skilled trades2
  6. Customer support2
  7. Other roles86

By country

  1. United States111

By place

  1. Rockville, MD84
  2. Oak Ridge, TN23
  3. MD - Gaither Rd., Rockville Corp Hqtrs1
  4. MD - McKinney Cir., Frederick1

By level

  1. Mid level or not stated49
  2. Senior30
  3. Lead / management16
  4. Internship10
  5. Director6

Stated pay

$111,528 – $148,438 a year

Median low and high of the 42 of 111 postings that state an annual salary in USD. The rest state no annual salary in USD.

Newest open roles at X-energy

Newest 50 of 111

  1. Engineer IV, ECM Developer

    Rockville, MD

    Posted 1 Oct

  2. Engineer II

    Rockville, MD

    Posted 1 Oct

  3. Configuration Manager

    Rockville, MD

    Posted 30 Sept

  4. Director, Corporate Communications

    Rockville, MD

    Posted 30 Sept

  5. Document Control Specialist

    Oak Ridge, TN

    Posted 30 Sept

  6. Fire Protection Engineering Internship - Summer 2027

    Oak Ridge, TN

    Posted 29 Sept

  7. Nuclear Criticality Safety Internship- Summer 2027

    Oak Ridge, TN

    Posted 28 Sept

  8. Process Engineering Internship - Summer 2027

    Oak Ridge, TN

    Posted 28 Sept

  9. Systems Engineering Internship - Summer 2027

    Rockville, MD

    Posted 28 Sept

  10. Nuclear Criticality Safety Engineer

    Oak Ridge, TN

    Posted 28 Sept

  11. Equipment Sourcing Engineer

    Rockville, MD

    First seen 27 Sept

  12. Director, Customer Relationship Management (Utilities)

    Rockville, MD

    First seen 27 Sept

  13. Procurement Engineer - Steam and Safety Valves

    Rockville, MD

    First seen 27 Sept

  14. Systems Administrator IV, Enterprise Content Management

    Rockville, MD

    First seen 27 Sept

  15. Engineer IV-V, Risk Informed Safety Analysis

    Rockville, MD

    First seen 27 Sept

  16. Structural Analysis Engineer, Metallics

    Rockville, MD

    First seen 27 Sept

  17. Mechanical Design Engineer

    Rockville, MD

    First seen 27 Sept

  18. Engineer V, Configuration Management

    Rockville, MD

    First seen 27 Sept

  19. Chemical Engineer

    Rockville, MD

    First seen 27 Sept

  20. Specialist V, Teamcenter Librarian

    Rockville, MD

    First seen 27 Sept

  21. Test Engineer, Design and Execution

    Rockville, MD

    First seen 27 Sept

  22. Software Engineer III, AI Digital & Engineering Software

    Rockville, MD

    First seen 27 Sept

  23. Mechanical Engineer, Graphite

    Rockville, MD

    First seen 27 Sept

  24. Engineer V-VI, Licensing

    Rockville, MD

    First seen 27 Sept

  25. Project Controls Engineer III (Risk Management)

    Rockville, MD

    First seen 27 Sept

  26. Associate IV, Business Development and Structuring

    Rockville, MD

    First seen 27 Sept

  27. Planner-Scheduler III-V

    Rockville, MD

    First seen 27 Sept

  28. SAP Ariba Administrator

    Rockville, MD

    First seen 27 Sept

  29. Engineer III-IV, Engineering Strategy

    Rockville, MD

    First seen 27 Sept

  30. Materials Engineer (Creep & High Temp Metallics Design)

    Rockville, MD

    First seen 27 Sept

  31. Test Engineer II/III, Mechanical

    Rockville, MD

    First seen 27 Sept

  32. CFD Engineer III-V (Fluid Vibrations Analysis)

    Rockville, MD

    First seen 27 Sept

  33. Corrective Action Specialist

    Oak Ridge, TN

    First seen 27 Sept

  34. Thermal Analysis Engineer

    Rockville, MD

    First seen 27 Sept

  35. Engineer IV, Safety Analysis & V&V

    Rockville, MD

    First seen 27 Sept

  36. Thermal-Hydraulic Training Simulation Engineer

    Rockville, MD

    First seen 27 Sept

  37. Mechanical Design Engineer – Reactor Internals (In-Vessel Shielding)

    Rockville, MD

    First seen 27 Sept

  38. Director, Value Engineering and Product Management

    Rockville, MD

    First seen 27 Sept

  39. Mechanical Design Engineer (Steam Generator)

    Rockville, MD

    First seen 27 Sept

  40. Associate II, Growth & Strategy

    Rockville, MD

    First seen 27 Sept

  41. Senior Cyber Systems Administrator

    Rockville, MD

    First seen 27 Sept

  42. Test Engineer, Structural & Vibration Testing

    Rockville, MD

    First seen 27 Sept

  43. Software Engineer IV, Artificial Intelligence

    Rockville, MD

    First seen 27 Sept

  44. Engineer I–III, Thermal-Hydraulic Safety Analysis & V&V

    Rockville, MD

    First seen 27 Sept

  45. Engineer IV - VI, Nuclear Safety Analysis

    Rockville, MD

    First seen 27 Sept

  46. Licensing Engineer II-VI, Risk-Informed Safety Analysis

    Rockville, MD

    First seen 27 Sept

  47. Manager, IT Projects

    Oak Ridge, TN

    First seen 27 Sept

  48. Mechanical Systems Design Engineer

    Rockville, MD

    First seen 27 Sept

  49. AI Platform Engineer

    Rockville, MD

    First seen 27 Sept

  50. Health Physicist

    Oak Ridge, TN

    Posted 26 Sept

One row per title and place. See every role on X-energy's career site (opens in a new tab).

Where these numbers come from

From X-energy's own career pages, read by hirly every six hours. Counts are what hirly has seen there, not the company's official numbers: a role posted in several places is counted once per posting, and a role the company never posted on its career site is not counted. hirly has read this career site since 1 September 2026. hirly is not affiliated with X-energy.

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