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Salary
$146k – $187k per year
Location
In office (Oak Ridge)
Seniority
Senior · 5+ years exp
Visa
H-1B filings in 12 months: 3
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 14, 2026. First seen by Alion on Oct 14, 2026.

Overview
Company
Impact
Profile match
X-energy is an advanced nuclear reactor and fuel company headquartered in Rockville, Maryland, developing the Xe-100 high-temperature gas-cooled small modular reactor and the TRISO-X fuel that powers it. Founded in 2009, it has further offices and sites in Frederick, Maryland and Oak Ridge, Tennessee, where its fuel fabrication facility is being built, and works with utility and industrial partners on first deployments of its reactors in the United States. It recruits mechanical, electrical, fuel and thermal hydraulics engineers, project controls and supply chain specialists, procurement and purchasing staff, construction field engineers and corporate functions such as HR and recruiting.
Backed by G Squared

X-energy LLC conducts a thorough recruiting process and will never issue offers without interview to discuss qualifications and responsibilities. All applications will be submitted via our company career page, www.x-energy.com/careers/. 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 www.x-energy.com/contact-us.

Job Description

The Manager, Application Administration leads the team responsible for application administration across the business and plant application portfolio. The position owns account management, configuration, and lifecycle support for those applications, and manages the application administrators who deliver it. The role works in coordination with the platform owners, IT Support, and Cyber Security, and does not own server, infrastructure, or end user desktop support.

Job Profile Tasks/Responsibilities:

Team Leadership

  • Lead, develop, and manage the team of application administrators
  • Set priorities, assign work, and balance workload across the application portfolio
  • Establish standards, procedures, and performance expectations for application administration
  • Support hiring, onboarding, training, and career development of the team

Application Administration

  • Own account management, provisioning, and access administration across the business and plant application portfolio
  • Direct application configuration and functional maintenance across the portfolio
  • Serve as the direct administrator for an assigned subset of applications, including their configuration, access, and vendor escalation
  • Provide lifecycle support for applications, including application updates and version upgrades coordinated with Cloud Infrastructure Systems
  • Manage application licensing and vendor administration
  • Maintain the application inventory and administration documentation

Access, Security, and Compliance

  • Administer user roles, access rights, and segregation of duties within applications
  • Coordinate with Cyber Security and identity management on provisioning and access controls
  • Execute application changes under formal change control
  • Support internal audits, Nuclear Regulatory Commission (NRC) inspection readiness, and periodic access reviews
  • Maintain audit trail and records configuration to regulatory expectation

Service Delivery and Coordination

  • Ensure reliable administration and support for business and plant applications
  • Coordinate with IT Support on escalation of application issues from end users
  • Coordinate with platform and functional owners, including the Enterprise Resource Planning (ERP) and manufacturing execution system (MES) teams, on application administration boundaries
  • Manage vendor support relationships for administered applications
  • Maintain professional demeanor and behavior at all times in all forms of communication.
  • Perform other duties as assigned by the manager.

Job Profile Minimum Qualifications:

  • Bachelor's degree in Information Technology, Information Systems, or related field, or equivalent experience
  • Typically 10 years of relevant experience, with 5 or more years of experience in application or system administration and 2 or more years of experience leading or supervising a technical team
  • Experience administering enterprise business applications, including account management, configuration, and lifecycle support
  • Experience with user access administration, role management, and segregation of duties
  • Experience working under formal change control and computer system validation
  • Ability to obtain and maintain unescorted site access
  • Experience administering applications in a manufacturing or regulated industrial environment preferred
  • Experience with identity and access management across an enterprise application portfolio preferred

Location: 151 Lafayette Drive, Oak Ridge, TN 37830

Work Site Expectations: 5 days a week in office

Travel Expectations: up to 10-25% as needed

Hours: Standard office schedule are 8:00am-5:00pm ET, Mon-Fri

Compensation

As required by Maryland and other applicable state law, X Energy, LLC (X-energy) lists the expected compensation range for a publicly advertised job opportunity based upon the job requirements (e.g. education/training, experience, skill sets, etc.). Individual candidates who meet the job requirements for the posted position will be offered a salary within this range based on their respective levels of education/training, experience, and other qualifications unique to them. Salary ranges may vary based on the specific office location and region referenced in the posting to take into consideration differences in cost of living and may not be reflective of all regions. Please note that compensation ranges listed for US job postings reflect base salary only and do not include benefits or other incentives.

Offers within the posted salary range are commensurate with the individual’s qualifications for the position, along with a view on internal equity, market data, and room for growth. The salary range for this position is:

$146,250 - $186,750

Position Job Classification

Full time - Exempt

Benefits

X Energy, LLC offers a robust benefits package that includes a 401K plan with an employer match, Medical/Dental /Vision Insurance, Life and Disability Insurance, Paid Time Off, and a Tuition Reimbursement/ProfessionalDevelopment policy that supports the continuing education of our employees.

An Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

X Energy, LLC participates in E-Verify. Please visit the links below for more information about E-Verify and the protection of your Right to Work.

Right To Work Link: If you have the right to work, don't let anyone take it away (e-verify.gov)

E-Verify Participation Link: E-Verify Participation Poster English and Spanish

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