Willis, Texas, US

ONSITE DIESEL – WORLD-CLASS SERVICE
OnSite Diesel specializes in heavy equipment repair and maintenance, keeping the machines that power pipeline installation, rock quarry operations, and landfill management running strong and reliable. We operate as a DEUTZ brand, acquired in 2025 as part of a strategic growth initiative to expand our nationwide service footprint.
As part of DEUTZ, one of the world’s leading manufacturers of innovative drive systems, we’re backed by over 160 years of engineering excellence. DEUTZ designs, builds, and services advanced diesel, gas, and electric engines used in construction, agriculture, material handling, stationary systems, commercial vehicles, rail, and more.
Together, DEUTZ and OnSite Diesel deliver world-class equipment service solutions, combining trusted expertise, cutting-edge technology, and a commitment to keeping our customers’ operations moving every day.
Position Summary
This position involves working with heavy equipment. Applicants must have experience operating, maintaining, or repairing large-scale machinery from major industry manufacturers (e.g., excavators, loaders, dozers, graders, and similar types of heavy equipment)
Diesel field technicians' responsibilities include inspecting and diagnosing diesel engines and related systems (brakes, transmission, electrical, hydraulics, engines, tracks), performing routine maintenance like oil changes and filter replacements, repairing or replacing faulty parts, and conducting test drives to ensure proper function. They also use diagnostic tools, adhere to safety regulations, and communicate with customers about necessary repairs.
Essential Duties and Responsibilities
Inspection and Diagnosis:
- Conducting physical inspections and visual checks of diesel vehicles and equipment.
- Using diagnostic tools and computerized systems to identify mechanical and electrical issues.
- Interpreting diagnostic test results to pinpoint the cause of malfunctions.
Maintenance and Repair:
- Performing preventive maintenance, such as oil changes, filters and fluid checks.
- Repairing or replacing worn-out or damaged components, including engines, transmissions, injectors, and cooling systems.
- Addressing issues with critical vehicle systems like brakes, steering, exhaust, electrical, hydraulics.
Testing and Verification:
- Conducting test drives to evaluate vehicle performance and verify repairs have been successful.
- Ensuring emissions control systems and other components meet federal and state regulations.
Other Duties as Assigned
Other Qualifications
Communication:
- Consulting with customers to explain detected issues and discuss repair options.
- Advising customers on maintenance needs and recommended repairs.
Safety and Organization:
- Adhering to strict safety procedures and company policies while working.
- Using power, machine, and hand tools safely and effectively.
- Maintaining a clean, organized, and safe work environment.
Supervisory Responsibility
Individual Contributor
Travel Requirements
This position does not require overnight travel.
Minimum Requirements
- High School Diploma
- Valid Driver’s License
- Must be able to drive company vehicles
- 1-3 years Equipment Repair and Diagnostics experience
- 1-3 years Equipment Maintenance and Repair experience
- 1 year of experience working in the field exclusively
Preferred Requirements
- Deutz engine maintenance and repair experience
Physical Requirements:
- Must be able to lift up to 50 lbs at a time.
EEO Statement
DEUTZ is an equal opportunity employer and considers all applicants for employment based on merit, competence, performance, and business needs. We do not discriminate on the bases of any status protected under federal, state, or local law. Applicants will be considered regardless of their race, color, sex, gender identity or expression, age, religion, creed, national origin, citizenship status, sexual orientation, genetic information, physical or mental disability, military status or any other characteristic protected under federal, state, or local law. In addition to complying with all applicable laws, DEUTZ also has a strong corporate commitment to inclusion.