Diesel Mechanic

Job Title: Diesel Mechanic Job Description

The Diesel Mechanic inspects, maintains, and repairs vehicles and heavy equipment powered by diesel engines, including semi-trucks, buses, and construction machinery. This role uses specialized diagnostic tools to identify malfunctions, perform routine preventive maintenance such as oil changes, and repair or replace defective parts to keep equipment operating safely and efficiently.

Responsibilities

• Inspect diesel-powered vehicles and heavy equipment, including semi-trucks, buses, and construction machinery, to identify mechanical and electrical issues.

• Use specialized diagnostic tools and equipment to troubleshoot diesel engines, hydraulic systems, electrical systems, brakes, and transmissions.

• Perform routine maintenance services such as oil changes, filter replacements, fluid checks, and lubrication of components.

• Repair or replace defective or worn parts, including engine components, brake systems, hydraulic lines, and transmission parts.

• Diagnose and repair diesel engine performance issues, including fuel system problems, starting issues, and power loss.

• Inspect, service, and repair brake systems to ensure safe and reliable operation.

• Perform welding and basic fabrication as needed to repair or reinforce components and equipment structures.

• Test repaired vehicles and equipment to verify that repairs are completed correctly and systems operate safely and efficiently.

• Maintain accurate records of inspections, maintenance, and repairs performed on each vehicle or piece of equipment.

• Follow safety procedures and best practices while working with heavy equipment, tools, and machinery.

Essential Skills

• Hands-on experience inspecting, maintaining, and repairing diesel-powered vehicles and heavy equipment.

• Strong troubleshooting skills for diesel engines, hydraulic systems, electrical systems, brakes, and transmissions.

• Proficiency in using specialized diagnostic tools and equipment to identify mechanical and electrical malfunctions.

• Solid understanding of diesel engine operation, including fuel, air, and exhaust systems.

• Ability to perform mechanical repairs on engines, brakes, transmissions, and related components.

• Knowledge of hydraulic systems, including diagnosis and repair of leaks, pressure issues, and component failures.

• Knowledge of automotive and equipment electrical systems, including wiring, sensors, and control modules.

• Ability to perform welding tasks safely and effectively for repair and maintenance work.

• Attention to detail when inspecting equipment and documenting maintenance and repairs.

• Ability to follow technical manuals, diagrams, and repair procedures accurately.

Additional Skills & Qualifications

• Experience working with semi-trucks, buses, and construction machinery.

• Familiarity with routine preventive maintenance schedules for diesel fleets.

• Ability to prioritize and manage multiple repair and maintenance tasks.

• Strong problem-solving skills and a methodical approach to diagnosing complex issues.

• Ability to work independently and as part of a maintenance team.

• Willingness to stay current with evolving diesel technology, diagnostic tools, and repair techniques.

Why Work Here?

Join a team that values technical expertise, safety, and reliability in keeping essential equipment running. You will work in an environment that recognizes skilled trades, encourages continuous learning, and offers the opportunity to work on a wide variety of vehicles and machinery. The role provides a chance to develop your mechanical abilities, expand your diagnostic skills, and take pride in work that directly supports daily operations and productivity.

Work Environment

This role typically operates in a shop or garage setting equipped with specialized diagnostic tools, lifts, and welding equipment, as well as in yard or field locations where heavy equipment is used. Work involves regular use of hand tools, power tools, and testing equipment, and may require working around noise, grease, and moving machinery. The position is hands-on and physically active, often involving standing, bending, and lifting components and parts. Appropriate workwear and protective equipment, such as safety boots, gloves, and eye protection, are used to ensure a safe and professional working environment.

Job Type & Location

This is a Contract to Hire position based out of Lexington, KY.

Pay and Benefits

The pay range for this position is $23.00 - $25.00/hr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:

Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave)

Workplace Type

This is a fully onsite position in Lexington,KY.

Application Deadline

This position is anticipated to close on Oct 16, 2026.

About Aerotek

Aerotek® Inc. provides staffing and services solutions in manufacturing, logistics, construction, aviation, facilities and maintenance. We provide the expertise, solutions and people required to rise to the challenges of North American industry. Headquartered in Hanover, Md., Aerotek operates a unified network of over 200 offices across North America, supporting more than 18,000 clients each year. Aerotek is an Allegis Group company, the global leader in workforce and business solutions. To learn more, visit: Aerotek.com | 1-888-AEROTEK.

Aerotek offers weekly pay, employee benefits including medical, dental & vision, life insurance, health advocacy and employee assistance programs, a 401(k) plan, and employee discounts.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance:

Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector:

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI):

We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.