• 480 Littlefield Avenue • South San Francisco, CA
  • Mon-Fri: 8am-5pm
  • (650)872-3656

Heavy-Duty Diesel Mechanic (Full-Time)

heavy-duty Diesel Mechanic

Havy-Duty Diesel Mechanic

Steven's Bay Area Diesel Service, Inc. is currently in search of a Heavy-Duty Diesel Mechanic to join our team.

Conveniently situated on the Biotech corridor of Highway 101, at 480 Littlefield Ave, South San Francisco, our business has been recognized as the premier full-service diesel service shop in the Bay Area since 1985.

We possess extensive expertise in the repair, servicing, and maintenance of a diverse range of diesel vehicles. Spanning an expansive 38,000-square-foot facility equipped with 10 repair bays, we are use cutting-edge, state-of-the-art equipment to deliver unparalleled service and quality workmanship.

Utilizing advanced computer diagnostic systems and factory software on a daily basis, we prioritize providing our clientele with superior service standards. Our specialization includes, but is not limited to, Cummins, CAT, IHC, Ford, GMC, Isuzu, Hino, Allison, and Dodge vehicles. Furthermore, we are proud to be recognized as an authorized Allison Transmission Dealer.

If you possess the requisite expertise and are eager to contribute to our dynamic team, we invite you to apply and become a part of our esteemed workforce.


The role of a Heavy-Duty Diesel Mechanic at Steven's Bay Area Diesel Service is pivotal in ensuring the proper functioning, safety, and longevity of customer's light and heavy-duty vehicles and equipment. As a Heavy-Duty Diesel Mechanic, your primary responsibility is to diagnose, repair, and maintain diesel engines, transmissions, and related systems in trucks, trailers, lift gates, and other heavy-duty equipment.

Your duties will include performing diagnostic tests to identify mechanical and electrical issues, troubleshooting problems, conducting repairs and replacements of faulty components, and executing routine preventive maintenance tasks. You'll work with a variety of tools and equipment to address issues such as fuel systems, exhaust systems, brakes, steering, suspension, and electrical systems.

Maintaining accurate records of repairs, maintenance activities, and parts usage is essential, as is adhering to safety protocols and guidelines to ensure a secure working environment for yourself and your colleagues. Effective communication with team members, supervisors, and customers is also crucial for coordinating work tasks, sharing knowledge, and providing excellent customer service.

Continuous learning and staying updated on industry trends, advancements in diesel engine technology, and regulatory requirements are integral aspects of the role. By demonstrating expertise, attention to detail, and a commitment to excellence, you'll contribute to the overall operational readiness and customer satisfaction of Steven's Bay Area Diesel Service.


As a Heavy-Duty Diesel Mechanic at Steven's Bay Area Diesel Services, you will be entrusted with a range of critical tasks to ensure the functionality and safety of light and heavy-duty diesel vehicles and equipment.
  • Must have a valid driver's license with a clean DMV record.

  • While not mandatory, completion of mechanical schooling is strongly encouraged.

  • Performing Diagnostic Tests: Utilize diagnostic tools and equipment to identify mechanical, electrical, and other issues affecting the performance of diesel engines, transmissions, and related systems.

  • Repairing and Maintaining Engines: Conduct repairs and replacements of faulty components in diesel engines, including fuel systems, exhaust systems, cooling systems, and more. Perform regular maintenance tasks to ensure optimal engine performance and longevity.

  • Troubleshooting Mechanical Problems: Investigate and troubleshoot mechanical problems with heavy-duty vehicles, such as trucks, trailers, lift gates, and boxes. Address issues related to brakes, steering, suspension, and other mechanical systems.

  • Performing Preventive Maintenance & Inspections: Execute routine maintenance tasks, including oil changes, filter replacements, fluid checks, and lubrication, to prevent breakdowns and ensure the reliability of vehicles and equipment.

  • Repairing Electrical Systems: Diagnose and repair electrical problems in heavy-duty vehicles, such as issues with wiring, lighting, starters, alternators, and batteries. Ensure electrical systems comply with safety standards and regulations.

  • Maintaining Records: Document all repairs, maintenance activities, and parts usage accurately and comprehensively. Keep detailed records of service histories for each vehicle or piece of equipment serviced.

  • Following Safety Procedures: Adhere to safety protocols and guidelines to maintain a secure working environment for yourself and your colleagues. Use personal protective equipment (PPE) as required and follow proper procedures for handling hazardous materials.

  • Communicating with Team Members: Collaborate effectively with other members of the maintenance team, as well as supervisors and managers, to coordinate work tasks, share knowledge, and ensure efficient operations.


  • This job requires on-site presence; remote work is not available for this position.

  • All heavy-duty Diesel Mechanics must possess and bring their own set of personal hand tools and toolbox for the job position.

  • Proficiency in hands-on fabrication and welding skills is essential for tasks such as repairing damaged components, fabricating custom parts, and performing structural modifications on heavy-duty vehicles and equipment.


  • Health and Vision Insurance

  • Paid Sick Days

  • Paid Vacation

  • Paid Holidays

  • Retirement plan

  • Competitive Wages

  • Overtime Pay

  • Diesel Training Classes



South San Francisco, CA




5 - 7 Years

Work Hours:

8:00am – 5:00pm


Part Time & Full-Time

Clean Up Crew / Mechanical Assistance

  • South San Francisco
The Clean Up Crew / Mechanical Assistance role at Steven's Bay Area Diesel Service entails a multifaceted set of responsibilities aimed at ensuring the cleanliness, safety, and efficiency of our diesel mechanics garage.
Better Business Bureau
ASE Certified
Bereau of Automotive Repair
Official Brake Adjusting Station
Official Lamp Adjusting Station

Steven’s Bay Area Diesel in South San Francisco, CA has provided expert Diesel Engine Repairs and Parts & Service since 1985. Our dedicated team of mechanics specialize in heavy-duty and light truck maintenance. Committed to reliable service and customer satisfaction — trust us for all your diesel engine needs!


Monday - Friday
8:00am - 5:00pm

Saturday - CLOSED

Sunday - CLOSED



480 Littlefield Avenue
South San Francisco, CA

Office (650)872-3656