Nuclear Security Jobs in Oak Ridge, TN (NOW HIRING)

Amentum is a global leader in advanced engineering and innovative solutions, supporting critical missions across defense, intelligence, energy, and civilian sectors. Our people are our competitive advantage, driven by purpose, collaboration, and a commitment to delivering excellence for our customers and communities. We are currently seeking an Engineering Project Manager to support our Nuclear Projects.
We are seeking an experienced, collaborative project engineering professional who excels at keeping teams aligned, stakeholders engaged, and projects delivered on schedule and within budget.
Based in Oak Ridge, Tennessee, this role will provide design management support for large-scale, complex projects for a diverse portfolio of clients that includes the U.S. Department of Energy, the National Nuclear Security Administration (NNSA), and commercial nuclear companies. The successful candidate will provide leadership across capital projects involving nuclear infrastructure, advanced reactor deployment, fuel cycle facilities, and mission-critical national security programs while ensuring the highest standards of safety, quality, regulatory compliance, and financial performance.
This is an opportunity to play a key role in delivering projects that strengthen America's nuclear security mission, support the deployment of next-generation nuclear technologies, and expand the nation's commercial nuclear capabilities.
Amentum Nuclear Projects is a Tier 1 services provider supporting the U.S. Department of Energy's, the National Nuclear Security Administration (NNSA), and leading commercial nuclear companies. We deliver safe, innovative, and mission-focused solutions at some of the nation's most complex nuclear security, production, and advanced nuclear technology facilities.
Our core capabilities include:

• Program and project management
• NNSA capital line-item projects
• Nuclear facility modernization and construction management
• Nuclear material and fuel cycle design
• Technical consulting and owner's engineering
• Engineering, procurement, and construction management (EPCM) projects
• Engineering and project delivery for advanced reactor programs, including Small Modular Reactors (SMRs) and advanced reactor technologies
• Engineering support for commercial nuclear fuel fabrication facilities
• Engineering and project execution for nuclear fuel reprocessing and related fuel cycle infrastructure

The purpose of this position is to assist project managers in the execution of large nuclear projects. This role has the overall objective of managing and/or coordinating project activities that are in compliance with the contract and ensure the safety, quality, value, and timeliness of project to which you will be assigned. You will be assigned responsibilities on a large-size project, multiple medium-size projects or complex segment of a larger project, in compliance with the project needs and directions provided by the Project Manager or the Director of Engineering.
Perform essential project engineering functions involving monitoring of progress, documentation of communications and meetings, and identification/evaluation of project issues and problems
Collaborate in management and coordination of activities among all project functions and engineering disciplines in accordance with the established project baseline documents
Review project staffing requirements and coordinate staffing with supporting functional organization managers and/or subcontractors
Support creation and coordination of overall project plans and schedules, and monitoring activities, progress, and milestones against the plans
Support creation and coordination of project effort hours, and cost estimates and budgets, and monitor progress and cost performance against these
Support coordination between design, procurement, material management and construction on technical and schedule requirements
Assist the Project Manager in developing the required documentation to communicate (client/internal) project contractual and technical issues, status and progress reports; conduct/coordinate related meeting as necessary
Other duties as assigned
Requirements
Bachelor's degree
7 years of experience in engineering
USA Citizenship is required
Experience in the performance of functional tasks on projects with a well-developed understanding of procedures and interfaces
Previous successful performance in a project engineering position on a minimum of two medium or large sized projects
Proficient at initiating and growing solid relationships with clients, vendors and suppliers while meeting the company's business needs and goals
Demonstrate strong interpersonal skills
Ability to set and maintain high standards of performance with responsibility and accountability for successfully completing assignments and tasks
Proactive in taking prompt and appropriate action to ensure objectives are accomplished and apply necessary follow-up to monitor progress and results of project tasks and assignments
Analytical approach to problem solving and identifying potential solutions
Technical and business writing skills
Able to conduct presentations in a manner which engages the audience that promotes understanding and retaining of the message
Innovative and able to generate and consider alternative strategies or approaches to work problems and opportunities
Basic computer and software skills to include the use of word processing, email, spreadsheets, electronic presentations, and project management tools
Project Management Certification (PMP) desired but not required
Compensation Details:
$80,000 - $130,000
The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.
Benefits Overview:
Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax-saving options
• Disability and life insurance
• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.
Original Posting:
08/13/2026 - Until Filled
Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.
Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.