and/or transports placardable amounts of hazardous materials by ground in any vehicle on a public road while in commerce, may be subject to additional Federal Motor Carrier Safety Regulations including: Driver Qualification Files, Medical Certification (obtained before onboarding), Road Test, Hours of Service, Drug and Alcohol Testing, vehicle inspection requirements, CDL requirements (if applicable) and hazardous materials transportation/shipping training. As the Principal Systems Engineer for ZBO (based in Kent, WA), you will be the single-threaded technical leader for the cryocooler system, owning the system architecture and technical baseline across all products (turbomachinery, heat exchangers, avionics, software, and the associated fluid and electrical interfaces) and leading all systems engineering activities for the team.