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Mechanical Systems Engineer, Hydrogen Systems Refueling Interface

Mechanical Engineering · Seattle, Washington

First Mode is a carbon reduction company developing creative, clean energy solutions for heavy industry’s toughest problems.

We hope you’ll join us in building a brighter future for people and planet.

This Mechanical Systems Engineer will be responsible for the design, configuration, specification, and deployment of the refueling system for our liquid hydrogen-powered haul truck and other vehicle systems.  They will bring the refueling system architecture to reality through strong collaboration with the hydrogen systems engineering and mining operations teams.

Position Responsibilities

  • Responsible for the liquid hydrogen refueling system components, including loading arms, refueling connections, control panels, etc. 
  • Responsible for the design, specification, routing, configuration, procurement, integration, testing, and deployment of the refueling system components
  • Hardware design and specification, including interface definition and vendor interactions where required
  • Leading and working with supporting engineers to bring elements of the refueling systems together for integration and testing

Basic Qualifications

  • Bachelor’s degree in Mechanical, Thermal, Aerospace, Propulsion, or Systems Engineering
  • 5+ years’ experience in applications of mechanical and/or cryogenic systems engineering disciplines
  • Must have experience in mechanical hardware design, analysis, and testing

Preferred Qualifications

  • Experience in design, servicing, and deployment of cryogenic liquid transfer hardware and processes
  • Experience in the design, analysis, or testing of mechanism elements 
  • Experience in cryogenic systems is a strong plus
  • Experience with liquid hydrogen systems is a strong plus  
  • Experience delivering a hardware and/or system design through its full life cycle – from concept through development and deployment – is a strong plus

Additional Requirements

  • Some travel may be required to support interface development, vendor interactions, and systems deployed in the field   
  • Training and certification in hydrogen systems safety will be required
  • May be required to climb ladders and stairs on the systems equipment during assembly and once deployed in the field


  • This position will be located at First Mode’s headquarters in Seattle, WA and will be required to work in office >60% of working hours

Benefits & Perks

  • Competitive compensation and bonus structure
  • 100% employer-paid health insurance (medical, dental, vision)
  • Flexible PTO with 12 week supplementary paid parental leave
  • 401(k) retirement account with a discretionary employer match
  • Commuter benefits (parking and public transportation)
  • A culture that encourages professional growth with learning and development reimbursements
  • Open and collaborative workspaces with free office snacks and lunches
  • Hybrid work model


First Mode is an Equal Opportunity Employer; employment with First Mode is governed on the basis of merit, competence, and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.