The Cryogenic Semi-Trailer Mechanic Level 3 is a senior technician responsible for advanced diagnostics, repair, inspection, and certification of cryogenic semi-trailers. This role requires a comprehensive understanding of DOT 49 CFR 396 inspection requirements, cryogenic systems, and vacuum-jacketed vessel maintenance. The Level 3 Mechanic serves as a technical lead and mentor to junior mechanics.

Key Responsibilities:

• Perform full DOT Annual Inspections (49 CFR 396) as a Certified DOT Inspector.
• Conduct advanced troubleshooting of electrical, mechanical, and cryogenic systems.
• Oversee tank testing, vacuum testing, pressure relief valve changes, and leak detection.
• Perform or supervise internal/external tank inspections per CGA 341 and customer requirements.
• Review and approve repair documentation and inspection reports for compliance.
• Train and mentor junior mechanics on safety, documentation, and technical procedures.
• Coordinate with engineering or QA staff to address complex trailer issues.

Qualifications:

• 5+ years of trailer or cryogenic equipment repair experience.
• Current DOT Inspector Certification (49 CFR 396.19) required.
• Advanced knowledge of brake, suspension, electrical, and cryogenic systems.
• Familiarity with CGA 341, ASME U-Stamp, or similar codes highly desirable.
• CDL A and cryogenic transfer experience preferred.
• Physical Requirements:Lift 75 lbs, climb, crawl, and operate tools and test equipment in a physically demanding environment.