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Mechanical Engineer 3​/4

Job in Los Alamos, Los Alamos County, New Mexico, 87545, USA
Listing for: N3B Los Alamos
Full Time position
Listed on 2026-08-11
Job specializations:
  • Engineering
    Mechanical Engineer, Engineering Design & Technologists, Quality Engineering, Systems Engineer
Salary/Wage Range or Industry Benchmark: 90000 - 130000 USD Yearly USD 90000.00 130000.00 YEAR
Job Description & How to Apply Below

This position is located in Los Alamos, New Mexico.

Los Alamos is a tight-knit mountain community that consistently ranks as one of ’s Best Small Towns in America. For two years in a row, Los Alamos County has ranked as the healthiest county in the nation according to a U.S. News report. The city is a top spot for outdoor enthusiasts as it has more than 120 hiking and biking trails, and residents enjoy easy access to the Pajarito Mountain Ski Area.

Thanks to the University of New Mexico-Los Alamos’ presence in the area, Los Alamos also has a college-town vibe that’s a major draw for young professionals, families and retirees.

426.2:This position is subject to DOE Order 426.2, Personnel Selection, Training, and Qualification Requirements for DOE Nuclear Facilities, which establishes entry-level requirements to ensure candidates selected for specific positions can successfully perform the requirements of the job.

Position Summary:

The Engineering organization has openings for a variety of engineering disciplines to support facility operations, maintenance, and new facility projects through design, construction, and commissioning. The Engineer will be part of a multi-discipline engineering organization providing engineering services in full compliance with N3B Engineering Standards, Procedures, and relevant codes and standards. This position is for an advanced Mechanical Engineer with extensive knowledge in engineering design, fabrication, construction, inspections, and acceptance testing.

N3B is seeking candidates in multiple engineering disciplines. Experience in engineering aspects for design and maintenance of at least one the following types of systems is required.

  • Control systems
  • Pressurized fluid systems
  • Nuclear ventilation systems
  • Well Drilling
  • Code Welding

Previous experience as a qualified CSE is a plus but not required.

While working to achieve N3B LLCC objectives, the Mechanical Engineer will ensure all activities and operations are performed in a safe and deliberate manner; will maintaining required safety, security and operational training; assure procedural and regulatory compliance; and make safety, security and quality an integral part of every task; including taking the necessary steps to stop work if continuing the job is unsafe or compromises security.

Essential Duties/Responsibilities (may include, but are not limited to):

  • Provide day-to-day engineering support to operations, maintenance, and project management organizations.
  • Provide solutions to a variety of technical problems of wide scope and complexity.
  • Coordinate completion of milestones associated with specific projects.
  • Interface and coordinate with other engineering disciplines, organizations, and customers in completion of assigned tasks.
  • Prepare engineering drawings, specifications, and calculations for design packages.
  • Develop maintenance requirements for systems and equipment.
  • Assess compliance of existing systems and identify corrective actions.
  • Establish quality assurance requirements for material procurements.
  • Perform field walk downs of existing structures and systems to develop accurate as-built documentation.
  • Implement the N3B Conduct of Engineering Program
  • Utilize strong ethics and conduct of operations principles to ensure fully compliant engineering deliverables.

Minimum Qualifications (Knowledge, Skills, Abilities):

Level 3:

  • Thorough understanding and wide application of technical principles, theories and concepts of engineered systems and component maintenance requirements
  • Provide technical solutions to a wide range of difficult technical problems.
  • Demonstrate advanced understanding in the application of national codes and standards including the ASME, ANSI, ASHRAE, AWS, DOE-O-420.1C etc.
  • Demonstrated broad-based design experience with engineered systems.
  • Skill and ability to perform complex professional tasks under general supervision and guidance. Independently determine and develop approach to problem solutions.
  • Contribute to completion of specific programs or projects.
  • Ability to organize own work independently in order to meet established objectives, using discretion in performing duties
  • Level of language skills, mathematical…
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