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Mechanical System Engineer ; Nuclear Facilities Engineer

Job in Los Alamos, Los Alamos County, New Mexico, 87545, USA
Listing for: Los Alamos National Security LLC
Full Time position
Listed on 2025-12-17
Job specializations:
  • Engineering
    Mechanical Engineer, Electrical Engineering
Salary/Wage Range or Industry Benchmark: 94500 - 172200 USD Yearly USD 94500.00 172200.00 YEAR
Job Description & How to Apply Below
Position: Mechanical System Engineer 1/2 (Nuclear Facilities Engineer 1/2)

What You Will Do

This position will be filled at either the Nuclear Facilities Engineer 1/2 level, depending on the skills of the selected candidate. Additional job responsibilities (outlined below) will be assigned if the candidate is hired at the higher level.

Nuclear Facilities Engineer 1 ($94,500 - $154,600)

Within this job, successful candidates will have opportunity to support the Laboratory’s mission by serving as the subject matter expert for nuclear facility electrical, mechanical, and structural engineering matters, including all aspects of electrical safety, HVAC, power quality, fluid/utility systems, power monitoring, critical power reliability/redundancy issues, renovating rooms, modifying buildings and structural members, and developing new structures within and around the plutonium facility.

Often in this role, engineers may perform engineering studies including short circuit, device coordination, equipment sizing, exterior lighting, fault current, arc flash for both medium and low voltage equipment, demolition, installation, upgrades, and repairs. Within this role, engineers will become familiar with pressure safety, leak testing requirements, piping supports, flow requirements, installing equipment on housekeeping pads or skids with the use of post-installed anchors, design cranes and crane girders/support structures, canopies, equipment support stands, piping/conduit supports, wall/floor/ceiling penetrations, and concrete slabs.

Nuclear

Facilities Engineer 2 ($104,100 - $172,200)

In addition to the description above, engineers in this position will work alongside junior and senior engineers (e.g., fire protection, structural, mechanical, and electrical) and other peers in team settings to complete collaborative full-system design solutions through mentoring and leadership.

What You Need Minimum

Job Requirements
  • Develops broad and/or unique knowledge with major commercial, industrial, or nuclear facility with a strong background in facility related systems (i.e. HVAC, Compressed Air).
  • Fundamental knowledge of design, operation, and maintenance of facility related mechanical systems.
  • Knowledge of trouble shooting mechanical systems.
  • Awareness of and demonstrated experience in application of codes and standards in a highly regulated work environment, to include but not limited to the IBC, IEBC, ASHRE, B31.
  • Demonstrated ability to perform analysis and calculations required to support engineered solutions.
  • Ability to effectively communicate engineering solutions both verbally and written with management, customers, peers, and maintenance personnel.
Increased Knowledge and Experience Requirements for Nuclear Facilities Engineer 2
  • Knowledge of and demonstrated ability to prepare and review technical reports and studies as part of establishing and maintaining Technical Baseline for new and existing facility structural systems.
  • Knowledge of and demonstrated ability to define and collect the usage, process, safety, and other requirements for the structure, system, or component design or analysis tasks, and prepare design concepts that meet the requirements.
  • Knowledge of and demonstrated ability to develop design details, design or analysis calculations, load studies, specifications, and special inspections that incorporate the applicable design requirements, including nuclear safety requirements, as applicable.
  • Knowledge and demonstrated experience evaluating and trending system health.
  • Demonstrated ability to interface and coordinate with other engineering disciplines and the customer during the development of the design as the Mechanical SME.
  • Demonstrated ability to mentor engineering interns and other engineers.

Education/Experience at lower level: Position requires a Bachelor's Degree in Engineering from an ABET‑accredited college or university and 2 years of practical work experience necessary to perform the responsibilities outlined above. Advanced engineering or technical degree is highly desired.

Education/Experience at higher level: Position requires a Bachelor's Degree in Engineering from an ABET‑accredited college or university and a minimum of 3 years of practical work experience…

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