Lead Technician

Unlimited Carrier Inc.; Bolingbrook (IL); On-site; USD 48,000 - 62,000; Full time

Job summary

Unlimited Carrier Inc. is seeking a Heavy-Duty Diesel Truck Mechanic – Lead Technician in Bolingbrook, IL to oversee daily shop operations and provide technical leadership.

You will perform advanced diagnostics and repairs on Class 7-8 trucks, guiding a maintenance team to maximize fleet uptime. The role requires strong diagnostic skills with OEM software, experience leading a team, and the ability to train staff while ensuring DOT and OSHA compliance.

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 in a senior/lead technician role.
• Strong diagnostic skills using OEM diagnostic software.

Responsibilities

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

Skills

Team leadership

Diesel diagnostics

OEM diagnostic tools

Physical stamina

Tools

Cummins Insite

Detroit DiagnosticLink

Bendix ACom

WABCO

Volvo Tech Tool

DAVIE4

Job description

If you are unable to complete this application due to a disability, contact this employer to ask for an accommodation or an alternative application process.

Full Time Employee Bolingbrook, IL, US

Salary Range: $35.00 To $45.00 Hourly

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 Requirements

Required 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.