Mechanical Systems Engineer

HiFyve is hiring multiple Mechanical System Engineers (Nuclear Facilities Engineer Level 1 or Level 2)

Los Alamos, NM

Salary:

Level 1: $94K – $154K

Level 2: $104K – $172K

Benefits: Full Package + Full Relocation

We are seeking a Nuclear Facilities Engineer to support mission-critical nuclear operations. This role serves as a technical expert for facility electrical, mechanical, and structural systems, ensuring safety, reliability, and compliance in a highly regulated environment.

Key Responsibilities

Provide engineering support for nuclear facility infrastructure and systems

Perform engineering studies (short circuit, arc flash, fault current, equipment sizing)

Support HVAC, power, utilities, fluid systems, and critical power reliability

Support facility modifications, renovations, and new construction

Apply codes and standards including IBC, IEBC, ASHRAE, and ASME B31

Collaborate across engineering disciplines and operations teams

Level 2 Additional Duties:

Lead integrated design solutions and mentor junior engineers

Prepare and review technical reports and design documentation

Qualifications

Bachelor’s Degree in Engineering (ABET-accredited)

Level 1: 2+ years of relevant experience

Level 2: 3+ years of relevant experience

Experience with regulated facility systems (HVAC, utilities, power)

Ability to perform engineering calculations and analyses

Strong communication and teamwork skills

Preferred Experience

DOE or nuclear facility experience

Chilled water or nuclear air handling systems

Mechanical system modeling software

ASME NQA-1 quality programs

Work Environment

Onsite role in Los Alamos, NM

May require shift, weekend, or 24/7 coverage

Industrial environment with noise and radiation exposure

Due to the nature of the work, all candidates must be a US Citizen.