Commercial Semi‑Trailer Service Mechanic

Dtr-Services; Saint Paul (MN); On-site; USD 52,000 - 70,000; Full time

Job summary

Dtr-Services in Saint Paul, MN is seeking a Commercial Semi‑Trailer Service Mechanic to maintain and repair trailers, ensuring roadworthiness and safety for drivers and cargo. You will diagnose issues, perform inspections, and document work with precision.

Ideal candidates have hands-on experience with semi trailers, proficiency in mechanical, electrical, and hydraulic systems, and the ability to read schematics. A valid license and clean driving record are required.

Qualifications

• Hands-on experience working on semi trailers or similar heavy equipment.
• Ability to interpret technical manuals, wiring diagrams, and schematics.
• Detail-oriented, with strong follow-through on repairs.
• Valid driver’s license and a clean driving record.

Responsibilities

• Service and repair trailer brake, suspension, and electrical systems.
• Diagnose faults using observation, testing, and schematics.
• Perform safety and compliance inspections; recommend part replacements or repairs.
• Record all work performed and parts used in a clear, organized manner.
• Collaborate with peers to elevate service standards and efficiency.
• Stay informed on new techniques and best practices for semi trailer maintenance.

Skills

Semi trailer maintenance

Electrical systems

Hydraulic systems

Schematics interpretation

Team communication

Education

High school diploma or equivalent

Job description

Help keep freight moving safelyOur Saint Paul, MN shop is looking for a Commercial Semi‑Trailer Service Mechanic who takes pride in quality work and safe equipment. If you love solving mechanical puzzles and improving reliability, you’ll feel at home here.Your impactKeep trailers roadworthy through expert maintenance and precise repairs.Protect drivers and loads by identifying issues early and addressing them thoroughly.Uphold compliance through meticulous inspections and accurate recordkeeping.Strengthen the team by sharing knowledge and refining shop processes.Core work you’ll doService and repair trailer brake, suspension, and electrical systems.Diagnose faults using observation, testing, and schematics to guide corrective action.Perform safety and compliance inspections; recommend part replacements or repairs.Record all work performed and parts used in a clear, organized manner.Collaborate with peers to elevate service standards and efficiency.Stay informed on new techniques and best practices for semi trailer maintenance.What you bringHigh school diploma or equivalent; automotive/diesel technical coursework is beneficial.Hands-on experience working on semi trailers or similar heavy equipment.Proficiency with mechanical, electrical, and hydraulic systems.Ability to interpret technical manuals, wiring diagrams, and schematics.Detail-driven problem solver with strong follow-through.Team-focused communicator.Valid driver’s license and a clean driving record.Why you’ll like it hereJoin a friendly, supportive crew that values safety, craftsmanship, and continuous improvement—all from our conveniently located Saint Paul, MN facility.