Lead Technician - Shop Foreman

UC Group; Bolingbrook (IL); On-site; USD 48,000 - 62,000; Full time

Job summary

UC Group in Bolingbrook, IL is seeking a Heavy-Duty Diesel Truck Mechanic – Lead Technician to oversee daily shop operations, perform advanced diagnostics and repairs on Class 7-8 trucks, and lead a maintenance team toward high uptime and quality work.

The ideal candidate brings 5+ years of heavy-duty experience, strong leadership and diagnostic skills with OEM software, and a focus on safety, DOT/OSHA compliance, and teamwork to keep fleets running smoothly.

Qualifications

• Minimum 5 years as a heavy-duty diesel mechanic on Class 7-8 equipment.
• Advanced knowledge of diesel engines, air systems, electrical diagnostics, and aftertreatment systems.
• Experience leading a team or senior/lead technician capacity.

Responsibilities

• Lead, mentor, and support a team of technicians in a fast-paced shop environment.
• Perform advanced diagnostics and repairs on heavy-duty diesel engines and related systems.
• Oversee shop operations including safety, PPE, and process adherence.
• Coordinate with fleet maintenance leadership and customers on status and downtime impacts.
• Document all maintenance activities in fleet management systems.
• Ensure regulatory compliance with DOT and OSHA standards.

Skills

Lead Technician

Diagnostics

Team Leadership

Safety Compliance

Diesel Engines

Tools

Cummins Insite

Detroit DiagnosticLink

Bendix ACom

WABCO

Volvo Tech Tool

DAVIE4

Job description

Heavy-Duty Diesel Truck Mechanic – Lead Technician

Position Overview

The Heavy-Duty Diesel Truck Mechanic – Lead Technician is responsible for overseeing daily shop operations, performing advanced diagnostics and repairs on Class 7-8 trucks and related fleet equipment, and providing leadership to the maintenance team. This role ensures safe, efficient, and high-quality repair workflows while maintaining exceptional fleet uptime.

Schedule:

Key Duties and Responsibilities

Responsibilities include, but are not limited to:

Leadership & Supervision

• Lead, mentor, and support a team of technicians in a fast-paced shop environment.
• Assign, prioritize, and monitor daily work orders to ensure timely, efficient, and high-quality completion.
• Provide on-the-job training, technical guidance, and performance feedback to team members.
• Support onboarding of new technicians, including safety training and tool/equipment orientation.

Diagnostics & Repair

• Perform advanced troubleshooting, diagnostics, and repairs on heavy-duty diesel engines, emissions systems, aftertreatment systems, transmissions, drivetrains, suspensions, brakes, electrical systems, and HVAC systems.
• Utilize diagnostic software, including Cummins Insite, Detroit DiagnosticLink, Bendix ACom, WABCO, Volvo Tech Tool, DAVIE4, and other OEM platforms.
• Conduct DOT inspections and ensure all equipment meets regulatory compliance requirements.
• Oversee complex repairs and assist technicians with escalated technical issues.

Shop Operations

• Maintain safe shop practices and enforce proper use of PPE, lockout/tagout procedures, and standardized operating practices.
• Ensure shop cleanliness, organization, and an efficient workflow layout.
• Monitor inventory levels of parts, fluids, and shop supplies, and assist with ordering as needed.
• Review and close work orders to ensure accuracy in labor hours, parts usage, and documentation.

Fleet & Equipment Management

• Assist with scheduling preventive maintenance (PM) intervals to maximize fleet uptime.
• Support root cause analysis for recurring equipment failures and recommend corrective actions.
• Communicate repair status updates, equipment needs, and downtime impacts to fleet maintenance leadership and external customers.
• Participate in warranty recovery processes and vendor coordination as needed.

Administrative Responsibilities

• Accurately document all maintenance activities within the fleet management system (Fleetrock, TMT, or similar platforms).
• Monitor technician productivity and overall job performance.
• Ensure compliance with company policies, DOT regulations, and OSHA standards.
• Assist in preparing reports related to shop KPIs, equipment condition assessments, and operational improvement initiatives.

Skills and RequirementsRequired Qualifications

• Minimum of 5 years of experience as a heavy-duty diesel mechanic working on Class 7-8 equipment.
• Advanced knowledge of diesel engines, air systems, electrical diagnostics, and aftertreatment systems.
• Experience leading a team or serving in a senior or lead technician capacity.
• Strong diagnostic and troubleshooting abilities utilizing OEM diagnostic software.
• Valid driver's license.
• Ability to lift 50+ pounds and perform physically demanding tasks in a shop environment.

Preferred Qualifications

• CDL Class A or Class B.
• ASE Medium/Heavy Truck Certifications (T2, T4, T5, T6, T7, or L2).
• Experience using fleet maintenance management software.
• Leadership and teamwork
• Problem-solving and technical expertise
• Strong communication and documentation skills
• Safety-focused mindset
• Time management and workflow prioritization

Compensation

Hourly Pay Range: $35.00-$45.00 per hour

Compensation will be determined based on experience, certifications, and shift assignment.

Disclaimer

The information provided in this job description is intended to describe the general nature and level of work performed by employees within this position. It is not intended to be an exhaustive list of all duties, responsibilities, qualifications, or working conditions associated with the role. Duties and responsibilities may be modified as business needs require.