1

Diesel Optimization Jobs in Portland, OR (NOW HIRING)

Journeyman Mechanic - Graveyard Shift

Portland, OR · On-site

$29.25 - $38.50/hr

Preferred knowledge of diesel medium-duty and heavy-duty trucks, including brands such as Volvo ... Conduct preventative maintenance on company owned equipment to ensure optimal performance and ...

O&M Operator

Vancouver, WA · On-site

$18.25 - $24/hr

... diesel generator, heat recovery steam generator, reverse osmosis and CEDI water treatment systems ... Perform routine inspections and tests to ensure plant is operating at optimal level * Monitor and ...

Driver Supervisor

Portland, OR · On-site

$40 - $42/hr

In 2023, we led the way by transitioning our fleet to R99 renewable diesel-the cleanest option ... optimization and scheduling software preferred. • Proficient with relevant software for data ...

Diesel Optimization information

See Portland, OR salary details

$15

$29

$41

How much do diesel optimization jobs pay per hour?

As of Aug 16, 2026, the average hourly pay for diesel optimization in Portland, OR is $29.98, according to ZipRecruiter salary data. Most workers in this role earn between $25.48 and $33.65 per hour, depending on experience, location, and employer.

What cities near Portland, OR are hiring for Diesel Optimization jobs?

Cities near Portland, OR with the most Diesel Optimization job openings:

Infographic showing various Diesel Optimization job openings in Portland, OR as of August 2026, with employment types broken down into 58% Full Time, and 42% Contract. Highlights an 100% In-person job distribution, with an average salary of $62,355 per year, or $30 per hour.

Journeyman Mechanic - Graveyard Shift

oakh

Portland, OR • On-site

$29.25 - $38.50/hr

Full-time

Medical, Dental, Vision, Life, Retirement

Re-posted 25 days ago


Job description

Journeyman Mechanic - GRAVEYARD SHIFT

Join the Oak Harbor Freight Lines family, where success and tradition meet in a regional trucking story spanning over a century. With 110 years and counting of dedicated service across Washington, Oregon, Idaho, Nevada, Utah, Arizona, and California, we are more than just a company – we are a legacy. We are on the lookout for individuals who are ready to drive their careers forward as part of our team. Are you ready to be a part of our journey?

A Journeyman Mechanic for Oak Harbor must have more than 2 years of mechanical experience.  They must be able to complete 80 plus tasks without supervision from our list of “mechanical skills checklist”.

Job Requirements and Qualifications:

  • Strong technical knowledge of diesel engines, components, fuel, and electronic systems.
  • Preferred knowledge of diesel medium-duty and heavy-duty trucks, including brands such as Volvo, Kenworth, International, and Freightliner.
  • Possess physical strength and stamina to perform various tasks including lifting (up to 50 lbs), bending, stooping, and climbing.
  • Must pass a pre-employment drug screen and background check.
  • Hold a valid ID or driver’s license.
  • Minimum of 2 year’s experience in mechanical repairs and diagnostic on heavy-duty and medium-duty equipment for a commercial fleet.
  • Proficiency in computer skills including Windows and diagnostic software.
  • Ability to meet DOT standards for brake and annual inspection certifications.
  • Experience in the repair of dry vans, structure, doors, interiors, exteriors, ceilings, and roofs is not required but preferred.
  • ASE or manufactures certification is a plus.
  • Capability to read and understand technical service manuals, repair orders, labels, and gauges.
  • Familiarity with DOT Out-of-service criteria.
  • EPA HVAC Refrigerant Recovery and Recycling Certification preferred.
  • Basic welding skills (oxy/acetylene, MIG, and ARC) desirable.
  • Possession of a CDL license is beneficial.

Job Duties and Responsibilities:

  • Diagnose and address driver’s written reports and verbal complaints regarding equipment issues.
  • Troubleshoot, diagnose, rebuild, replace, and perform all necessary repairs on company-owned equipment.
  • Conduct preventative maintenance on company owned equipment to ensure optimal performance and longevity. 
  • Execute repairs in accordance with industry standards, ensuring safety and efficiency.
  • Thoroughly document all repair orders and maintain accountability for used parts.
  • Utilize TMT fleet maintenance software to track assigned repairs efficiently.
  • Uphold a safe and clean work environment, adhering to workplace safety rules and regulations.

 

Benefits:

  • Medical, dental, vision – You choose which plan suits you and our family.
    • Single person pays 0% up to 2% of gross income.
    • Entire family pays 0% up to 4% of gross income.
  • 401K match of 100% on the first 5% contribution.
  • Holiday pay after your 90 days.

Company Paid Life Insurance.Will provide company tools.

http://www.oakharborbenefits.com/full-time-regular-employees.html

Oak Harbor Freight Lines is an Equal Opportunity Employer