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Diesel Mechanic

Job in Converse, Bexar County, Texas, 78109, USA
Listing for: Mansfield Oil Company
Per diem position
Listed on 2026-05-19
Job specializations:
  • Trades / Skilled Labor
    Heavy Equipment Mechanic, Diesel Mechanic
Salary/Wage Range or Industry Benchmark: 60000 - 80000 USD Yearly USD 60000.00 80000.00 YEAR
Job Description & How to Apply Below

Mansfield Service Partners is looking for a skilled Diesel Equipment Mechanic in Converse, TX. This role is responsible for the inspection, repair and maintenance of the Company's fleet of vehicles. Fleet consists of tractors, fuel trailers, stainless steel trailers, van trailers, tank wagons, stakebeds, and miscellaneous equipment. This role produces direct results for the success of a 24/7 operation.

We also offer additional hourly pay opportunities through our ASE certification incentives! Details are below.

What You'll Do
  • Follow a checklist of work orders outlined by MSP Fleet Manager and other Operation Managers.
  • Check Daily Vehicle Inspection Reports at beginning and throughout shift.
  • Utilize asset management system and parts inventory (Fleetio) and in-cab technology (Smar Truck, Samsara, Waste

    LINQ).
  • Test drive vehicles to diagnose malfunctions.
  • Raise trucks or equipment by using hydraulic jacks or hoists.
  • Inspect brake systems, steering mechanisms, pumping systems, meters, overfill systems, running gear, and other parts of vehicles.
  • Do routine maintenance, such as changing oil, checking batteries, and greasing equipment and parts.
  • Adjust and align wheels, tighten bolts and screws, and attach system components.
  • Repair or replace malfunctioning components, parts, and other mechanical or electrical equipment.
  • Maintain inventory tracking of tools and supplies.
  • Comply with Safety, DOT, OSHA, and EPA procedures.
  • Attend all company required continuing education and training programs.
  • Collaborate with Dispatch/Operations to ensure clear understanding of repairs and maintenance needed on equipment and priority in which to complete.
  • Perform quarterly periodic maintenance and inspections on all assigned equipment.
  • Perform weekly lot checks to ensure all equipment is in good working order.
  • Coordinate with various departments to ensure high level operational issues are resolved completely and in a timely manner.
  • Regularly share best practices and learning opportunities with peers across all MSP teams.
  • Review parts invoices with MSP Fleet Manager for any discrepancy and collaboration for timely approval and payment.
  • Ability to diagnose/repair engine after-treatment systems, other engine work as needed, replace clutches, and repair transmissions when needed.
Qualifications
  • 5+ years of mechanical experience (diesel, automotive, construction equipment); 8+ years preferred.
  • Valid Class A CDL with tanker and hazmat endorsements (or ability to obtain).
  • TWIC card (or ability to obtain).
  • ASE certifications preferred - see incentive structure below.
  • High school diploma or equivalent.
  • Having your own tools is preferred.
Skills That Set You Apart
  • Strong diagnostic and repair skills, especially with diesel engines and after-treatment systems.
  • Experience with pumps, clutches, transmissions, and electrical systems.
  • Effective communicator with solid problem-solving abilities.
  • Organized, consistent, and safety-focused.
Hourly ASE Certification Incentives

We reward your commitment to professional development. Our ASE incentive program offers additional hourly pay based on the number of certifications you earn:

  • Starter ASE Test Incentive: $0.25/hour – Passing four (4) ASE tests.
  • Additional ASE Test Incentive: $0.15/hour – Each additional test.
  • Master-Level ASE Certification Incentive: $1.50/hour – Master-Level ASE Certification.
Benefits
  • Comprehensive benefit package (health, dental, vision, Company paid: Life insurance, STD and LTD).
  • 401(k) plan with company match.
  • Paid Time Off that includes vacation days, sick leave, 8 paid holidays, 2 floating holidays and a paid day for volunteering at a non-profit agency.
  • Parental Leave.
  • Tuition Reimbursement.
  • Insurance Discount Programs.
  • Chaplain Program.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status.

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