Diesel Truck Technician St. Charles County

Kienstra Co; Foristell (MO); On-site; USD 45,000 - 65,000; Full time

Benefits offered by this job

Overtime opportunities

Competitive wage

Advancement potential

Job summary

Kienstra Co in Foristell, Missouri, is seeking an experienced Diesel Mechanic to maintain and repair our fleet of ready-mix concrete trucks. The position is day shift, Monday-through-Friday with potential overtime.

The ideal candidate will have strong troubleshooting skills, welding experience, and a valid driver's license. The job involves rigorous vehicle inspections, repairs, and ensuring compliance with safety standards.

We offer a competitive wage and benefits package with opportunities for advancement.

Qualifications

• Experience with DPF systems, electrical systems, air systems, fuel systems, and brake systems is required.
• Must be able to perform strenuous work, lift over 75 pounds, and stand/walk for long periods.
• Self-motivated, productive, and efficient worker.

Responsibilities

• Inspecting and maintaining diesel-powered equipment.
• Performing routine, preventative, and repair maintenance on equipment.
• Diagnosing malfunctions using computerized systems or testing equipment.

Skills

Ability to troubleshoot

Welding & fabrication skills

Excellent time management skills

Knowledge of health and safety standards

Conflict resolution skills

Tools

Welders

Torches

Impact wrenches

Forklifts

Diagnostic testing equipment

Job description

Job Overview

Kienstra - Ready Mix Concrete has served the St. Louis Regional Area since 1947! The company is looking for an experienced technician for repairing ready‑mix concrete trucks. This is a day shift Monday‑through‑Friday position with overtime opportunities. The role offers a competitive wage and benefits package with advancement potential. A valid driver’s license from your state of residence, appropriate endorsements, and a clean driving record is required. Pre‑employment background checks and drug tests are required. Must be able to do moderately strenuous work, lift over 75 pounds, stand/walk long periods, work in severe weather, and accept exposure to noise, dust, odors, fumes, and oils.

Job Purpose

The purpose of this position is to perform routine, preventative, diagnostic, and repair maintenance on all company equipment in a timely and cost‑effective manner. The technician may be called upon to work extensive overtime as weather and business conditions warrant. Responsibilities include a complete range of major, minor, and routine repairs on heavy equipment or heavy vehicles, repeated tasks throughout the day, and strict adherence to all company policies such as lockout/tagout, confined space, and hazard communication.

Key Responsibilities

• Ability to work independently and as part of a team
• Conflict resolution skills
• Excellent time management skills
• Knowledge of basic math and computer skills
• Maintain detailed and accurate service records and documentation
• Meet with peers, managers, internal customers (drivers) and vendors to explain problems and possible solutions
• Effective verbal, written, or electronic communication with others by face‑to‑face discussion, email, or telephone.
• Read/write/interpret directions
• Operate specialized machinery such as forklifts, loaders, hoists and plant equipment
• Understand inner workings of various machines such as skid steers, aerial boom lifts, etc.
• Possess own hand tools
• Operate basic shop tools including welders, torches, impact wrenches, grinders, ladders, and other equipment as assigned.
• Perform tire changes and maintenance
• Strong knowledge of health and safety standards required for the role
• Work in a manner to ensure personal safety and that of fellow employees by following company safety guidelines and policies

Requirements

• Daily inspection of the lot to verify equipment condition and identify potential out‑of‑service items.
• Interact with fleet manager, drivers, batch men, and operation and production personnel.
• General knowledge of engine scanning systems.
• Experience on International, Kenworth, Mack, Sterling, Western Star trucks is desirable.
• Experience with end dump and pneumatic trailers is desirable.
• Experience with DPF systems, electrical systems, air systems, fuel systems & brake systems required.
• Ability to troubleshoot.
• Maintain a safe and clean work area.
• Self‑motivated, productive and efficient worker.
• Order parts as needed and maintain inventory control.
• Welding & fabrication skills and experience required.
• Perform repairs as needed on fleet equipment in yard as well as on the road.
• Maintain repair orders including labor hours, parts used, and general comments.
• May require travel to potentially any of our plant locations based on needs.
• Will perform other duties as assigned by management personnel.

Role Description

A Diesel Mechanic is responsible for inspecting, repairing, and maintaining multiple types of diesel‑powered equipment.

Duties

• Adjust equipment, repair or replace defective parts, diagnose faults or malfunctions using testing equipment, and clean or perform maintenance work.
• Clean, lubricate, and perform other maintenance work.
• Perform daily fleet maintenance, correct fluids, and check functions as required.
• Perform quality preventative maintenance as per the detailed schedule on a consistent basis.
• Perform preventive maintenance inspections using mechanic tools and shop equipment which may include hydraulic, electric, hand and air tools.
• Conduct diagnostic tests for routine maintenance procedures and determine a course of action for damaged parts and systems.
• Diagnose malfunctions or problems using a computerized system or testing equipment to determine the root cause of any issues.
• Repair malfunctioning components, retrofit engines, change brakes, adjust steering systems, replace worn‑out parts and change hydraulic fluids.
• Use computerized equipment along with cutting torches, pneumatic wrenches, hydraulic jacks, screwdrivers, pliers, mallets and precision gauges.
• Test drive trucks before and after repairs, as needed.
• Diagnose mechanical issues: brakes, cab instruments, drivetrain repairs, electrical system, emissions, engine system, frame, HVAC, PTO, hydraulics, steering, suspension, tires, wheels.
• Technical certifications and a CDL is desirable.