Field Engineer - Mechanical

Consolidated Nuclear Security; Oak Ridge (TN); On-site; USD 90,000 - 130,000; Full time

Job summary

Consolidated Nuclear Security (Y-12) seeks a construction site engineering professional to interpret designs, adjust for site conditions, and ensure construction conforms to specifications. You will monitor submittals, verify quantities, and provide final technical approval.

The role requires a technical engineering degree with 2+ years of experience; DOE O 426.2A compliance may apply. Strong project management and quality oversight are essential for success at a national security facility.

Qualifications

• Bachelor’s degree in a technical engineering discipline or related field with 2+ years of relevant experience.
• Master’s degree: 1 year of relevant experience; typical range 4–7 years.
• DOE O 426.2A requirements may apply (engineering major, nuclear experience).

Responsibilities

• Provide construction site engineering resources during construction phases and interpret designs.
• Adjust designs to site conditions and manage technical issues and quality inspections.
• Monitor submittals, verify quantities, and support construction supervision.
• Provide final technical approval of completed construction tasks and ensure compliance.
• Review drawings/specifications and oversee construction for compliance.
• Assist in procedures, admin/technical documents, and requisition purchases.

Skills

Construction site engineering

Design interpretation

Quality inspections

Project management

Education

Bachelor’s degree in engineering or related field

Master’s degree in engineering or related field

Job description

Requisition ID20203-Posted09/09/2026-Project Management- Level of Experience (1) -Travel - 30% or less- Job Location Options (1)

What You'll Do

Provides construction site engineering resources and expertise during construction phases of projects to interpret designs, adjusts designs to meet site conditions, manages technical issues, performs quality inspections, monitors technical submittals and configuration management, verifies installed quantities, supports construction supervision, and provides final technical approval of completed construction tasks to ensure construction conforms to design specifications.

Provides support to Construction direct-hire craft by performing Mechanical/Piping Field Engineering responsibilities supporting construction projects or technical oversight for subcontracts. Provides technical/programmatic guidance on multiple and complex construction management tasks. Makes decisions regarding methods independently, and working with the Construction Managers, applies financial commitment authority for field changes.

Completes assigned tasks under minimal supervision and technical direction. Reviews and interprets drawings and specifications to determine if information is adequate for successful completion of construction. Oversees construction work for compliance with drawings and specifications. Performs constructability reviews during design preparation and execution. Maintains direct relationship with the Construction Managers/Construction Superintendents and the responsible Project Managers (PM) to execute the scope of work. Provides technical support in all phases of construction formation, project execution, testing/inspection, and project closeout. Maintains records of installed quantities and completed construction work. Participates in obtaining any required permits/clearances, lockouts, Escort Agreements, and work authorizations prior to commencing work on site. Performs verification of work in progress to ensure requirements of safety, security, quality (technical drawings and specifications), environmental control, workmanship, and schedule are met. Assists in the preparation of procedures, administrative and technical documents. Prepares/approves purchase requisitions for materials and services.

What You Can Expect

• Meaningful work and unique opportunities to support missions vital to national and global security
• Top-notch, dedicated colleagues
• Generous pay and benefits with a stable organization
• Career advancement and professional development programs
• Work-life balance fostered through flexible work options and wellness initiatives
• Requires a Bachelor’s degree in a technical engineering discipline or another related field plus 2 or more years of relevant experience. Typical experience ranging from 4 to 7 years.
• OR Master’s degree: Minimum 1 year of relevant experience. Typical experience ranging from 4 to 7 years.
• In addition, the applicant must meet the requirements of DOE O 426.2A (i.e., Baccalaureate in engineering or related scientific major 2 years job-related, and 1-year nuclear experience; or a DOE O 426.2A alternative).

Preferred Job Requirements

• Knowledge of single or multi-discipline construction operations and processes is required. Must have knowledge with the initiation and processing of Construction Inspection Packaging (Work Packaging).
• Previous experience with ASME NQA-1, B31.1, & B31.3. Knowledge of organized Construction Labor and Building Trades. Self-starter who can manage multiple projects/tasks with minimal supervisor direction and work well within a team.

Why Y-12?

You get #morethanajob. We encourage employees to achieve a healthy personal balance among home, work and the community. One of the ways we embrace work-life balance is by offering flexible work arrangements that provide alternatives to the traditional workweek, while still meeting business needs. Top talent and personal commitment mean more to our success than any other factors, so we reward our people with the kinds of benefits that make a positive difference in the quality of their lives. Benefits such as: medical plan, prescription drug plan, vision plan, dental plan, employer matched 401(k) savings plan, disability coverage, education reimbursement and many more. Want to stay healthy and fit but hate the cost of a gym membership? Take advantage of one of our onsite workout facilities and eat healthy in our onsite cafeterias. Much more than a workplace, at Y-12, you can build a career that lasts a lifetime.

Notes

The minimum education and experience for the lowest career level in the job posting range are listed under Minimum Job Requirements. Successful candidates hired into a higher career level than the minimum in the range must meet the requirements listed in the job leveling charts for the career level into which they are being hired.

If a range of Career Levels is posted, i.e., Senior Associate to Senior Specialist, internal applicants already in one of the Career Levels would come across at their current Career Level. Internal applicants currently in a lower level Career Level would move to the lowest posted Career Level.

Requires a Q clearance; however all qualified candidates will be considered regardless of their current clearance status. The ability to obtain and maintain a Department of Energy Q clearance is required.

This position may require entry into the Material Access Areas (MAA) and participation in the Human Reliability Program (10 C.F.R. Part 712), which requires successful competition of a DOE counterintelligence evaluation and may include a counterintelligence-scope polygraph examination.

This position may be categorized as a “designated position” identified by 10 C.F.R. Part 709, requiring successful completion of a DOE counterintelligence evaluation that may include a counterintelligence-scope polygraph examination.

CNS is a drug-free workplace. Candidates accepting a job offer will be required to pass a pre-placement physical, drug screening and background investigation. As an employee, you may be required to receive and maintain a security clearance from the United States Department of Energy in order to meet eligibility requirements for access to sensitive information or matter. U.S. citizenship is a requirement for security clearance applicants. All employees are subject to being randomly selected for drug testing without advance notification.

CNS is an equal opportunity employer. All qualified applicants will receive consideration for employment based on merit and without regard to race, color, religion, sex, sexual orientation, national origin, protected veteran status or disability.