Vehicle Software and Diagnostics Tool Test Engineer PACCAR paid time off, paid holidays, sick time, tuition reimbursement, 401(k) United States, Washington, Mount Vernon Sep 17, 2026 Requisition Summary The Vehicle Software and Diagnostic Test Engineer plays a key role in driving the quality and performance of PACCAR's DAVIE4 Service Tool-the powerhouse behind deploying and updating vehicle software and delivering diagnostics for Kenworth and Peterbilt trucks. In this fastpaced role, you'll jump into invehicle testing, tackle complex technical challenges, and collaborate across PACCAR divisions to troubleshoot issues and keep development moving forward. You'll also help elevate our test benches by integrating new hardware and enhancing automation scripts, ensuring our tools stay sharp, efficient, and ready for what's next. Company Information PACCAR is a Fortune 500 company established in 1905. PACCAR Inc is recognized as a global leader in the commercial vehicle, financial, and customer service fields with internationally recognized brands such as Kenworth, Peterbilt, and DAF trucks. PACCAR is a global technology leader in the design, manufacture and customer support of high-quality light-, medium- and heavy-duty trucks under the Kenworth, Peterbilt and DAF nameplates. PACCAR designs and manufactures advanced diesel engines andalso provides customized financial services, information technology and truck parts related to its principal business. Whether you want to design the transportation technology of tomorrow, support the staff functions of a dynamic, international leader, or build our excellent products and services - you can develop the career you desire with PACCAR. Get started! Division Information The PACCAR Technical Center provides engineering excellence to the truck and engine divisions of PACCAR Inc through innovative product development and testing. The Technical Center is located in the Skagit Valley about 65 miles north of Seattle, Washington. Job Functions / Responsibilities

Perform vehicle and engine diagnostic software testing using both test benches and invehicle setups

Plan, coordinate, and execute small to moderatescope projects with minimal supervision

Ensure all functionality is validated through comprehensive, executable test cases

Recommend the most effective test method (bench or invehicle) based on engineering judgment and system capabilities

Validate defect fixes for closure and provide stakeholders with clear assessments of customer impact

Foster strong communication and maintain productive working relationships across teams

Qualifications

3+ years of engineering experience

Foundational understanding of software testing principles and test methodologies

Familiarity with Controller Area Network (CAN) protocols, especially J1939

Ability to interpret simple to moderately complex electrical systems and schematics

Strong collaboration skills and ability to work effectively in a team environment

Proven ability to summarize technical issues and communicate clearly with diverse stakeholders

Strong workload management skills, with flexibility and initiative to adapt to shifting project priorities

Strong presentation skills

Education BS Degree in Computer Engineering, Electrical Engineering, Computer Science, or applicable field Paccar Benefits As a

U.S. PACCAR

employee, you have a full range of benefit options including: Competitive salary and 401k with up to a 5% company match

Fully funded pension plan that provides monthly benefits after retirement

Comprehensive paid time off - Minimum of 10 paid vacation days, 12 paid holidays, and sick leave

Tuition reimbursement for continued education

Medical, dental, and vision plans for you and your family

Flexible spending accounts (FSA) and health savings account (HSA)

Paid short-and long-term disability program

Life and accidental death and dismemberment insurance

EAP services including wellness plans, estate planning, financial counseling and more

Global Fortune 500 company with a wide array of growth and development opportunities

Work alongside experienced goal-oriented colleagues recognized as experts in their field

Additional Job Board Information PACCAR is an Equal Opportunity Employer/Protected Veteran/Disability. At PACCAR, we value talent and promote growth and development. We carefully consider numerous compensation factors, including your education, training, or experience. The salary range for Vehicle Software and Diagnostics Tool Test Engineer is $80,800 - $120,800 annually. Additionally, this role is eligible for a full range of benefit options listed above.