Custom Truck One Source (CTOS) — Union Grove, WI Ready to solve complex build challenges on commercial trucks? Do you enjoy turning a bare chassis into a fully outfitted utility or service vehicle? Can you read wiring diagrams and hydraulic schematics and make them come alive with clean, reliable installs? Are you at home with fabrication tools, diagnostic equipment, and a problem-solving mindset? If this sounds like you, CTOS is hiring a Hydraulic & Electrical Truck Equipment Technician to assemble, install, modify, and troubleshoot specialized upfits—cranes, aerial devices, lighting, PTOs, pumps, tool systems, and more. Your Impact Install custom truck bodies, utility equipment, cranes, and aerial devices to customer specifications. Execute mechanical, hydraulic, electrical, and pneumatic integration with precision. Interpret and apply wiring diagrams, schematics, blueprints, and technical drawings. Mount PTOs, pumps, hydraulic tanks/valves; wire lighting packages, toolboxes, and accessories. Fabricate brackets and mounts; create custom solutions as required. Diagnose and resolve build issues quickly to maintain quality and schedule. Verify safety and quality through thorough inspection and testing. Maintain a clean and safe work area and collaborate across production, engineering, and service. What You'll Need Experience as a mechanic, upfit technician, installer, fabricator, diesel or automotive technician, or related trade. Working knowledge of mechanical, hydraulic, electrical, and pneumatic systems. Proficiency with hand/power tools, diagnostic gear, and fabrication tools. Ability to read and follow blueprints, wiring diagrams, and manuals. Welding/fabrication experience is a plus. Strong troubleshooting ability and attention to detail. Capable of lifting up to 50 pounds; comfortable in a shop environment. Valid driver's license preferred. Ideal Backgrounds Truck equipment installation on utility, service, or construction vehicles Diesel trucks, heavy equipment, mobile cranes, and aerial devices Hydraulic and electrical system assembly, repair, and diagnostics Fleet maintenance and DOT-compliant inspections Fabrication and welding Automotive and diesel repair Technologies & Skills You'll Use Heavy Equipment Repair; Automotive Repair ASE Automobile and Light Truck Certification Tests Lift Truck Repair & Maintenance; GSE Maintenance Diesel & Heavy Equipment Systems Hydraulic Systems & Components Electrical Systems & Diagnostics (Heavy Equipment) Crane & Lifting Equipment Systems DOT & Equipment Inspection Compliance Electrical Schematic Reading Equipment Installation & Wiring; Equipment Installation What's In It for You Competitive pay reflective of your experience Medical, Dental, and Vision coverage 401(k) with company match Paid Time Off and holidays Clear paths for advancement and skill growth Work on unique, specialized equipment every day Join a stable, industry-leading company At CTOS, your craftsmanship helps energize communities and keep critical services running. Let's build the fleet that keeps North America working. Apply today for the Hydraulic & Electrical Truck Equipment Technician role in Union Grove, WI. Equal Opportunity Employer - EOE