Diesel Fleet Technician — Electric Transit Maintenance

Torrey Holistics; Jessup (MD); On-site; USD 65,000 - 85,000; Full time

Job summary

Zum Services, Inc. in Maryland seeks an experienced fleet mechanic to troubleshoot and repair heavy trucks, diagnose electrical and A/C systems, and perform engine service and inspections. You will test-drive, document work, and assist with on-site safety and compliance in a fast-paced shop environment.

Join a mission-driven team modernizing student transportation with a cloud-based platform and a safety-first approach. CDL preferred and ASE certification desired but not required.

Qualifications

• 2–4 years of medium/heavy truck fleet mechanic experience.
• Expertise in diagnostics, electrical systems, and A/C.
• Comprehensive knowledge of core vehicle systems and diesel equipment.
• Hands-on fleet background across diesel and gasoline platforms.
• Own the recommended minimum hand tools for diesel technicians.
• Strong judgment and decision-making ability.
• Valid state driver's license (CDL preferred).
• ASE certification desired but not required.

Responsibilities

• Troubleshoot and repair: steering, electrical, cooling, lubrication, braking, drivetrains, suspensions, power steering units, clutches, and transmissions.
• Adjust, test, and rebuild engines; service oil, temperature, and fuel regulation assemblies.
• Operate within your certification level while following all relevant federal, state, and local regulations.
• Test-drive vehicles to verify successful repairs.
• Arrange and obtain inspections/approvals before major repair releases.
• Keep the shop safe, clean, and efficient; ensure compliance with federal, state/provincial, and local standards.
• Record labor hours, parts usage, and all work performed on required documentation.
• Handle road calls and complete on-the-road fixes.
• Flag additional repair needs and refer work needing higher-level technician qualifications.
• Inform the Lead Technician of unsafe maintenance conditions, practices, or vehicle abuse.

Skills

Diagnostics

Electrical systems

A/C

Diesel equipment

Gasoline platforms

Hand tools

Education

ASE certification

Tools

Diagnostic tools

Electrical testing gear

Diesel system tools

Job description

Zum Services, Inc. in Maryland seeks an experienced fleet mechanic to troubleshoot and repair heavy trucks, diagnose electrical and A/C systems, and perform engine service and inspections. You will test-drive, document work, and assist with on-site safety and compliance in a fast-paced shop environment.

Join a mission-driven team modernizing student transportation with a cloud-based platform and a safety-first approach. CDL preferred and ASE certification desired but not required.