Diagnostic Software Engineer

PACCAR Electronics is seeking a motivated and experienced Diagnotic Software Engineer.

Location: Lewisville, TX

About PACCAR  

PACCAR, Inc. is a Fortune 500 company established in 1905 and is recognized as a global leader in the commercial vehicle, financial, and customer service fields. PACCAR is a global technology leader in the design, manufacture, and customer support of high-quality light-, medium- and heavy-duty trucks under its internationally recognized brands Kenworth, Peterbilt and DAF nameplates. PACCAR designs and manufactures advanced diesel engines and provides customized financial services, information technology and truck parts related to its principal business. 

About Global PACCAR Electronics 

The Global PACCAR Electronics organization supports Kenworth, Peterbilt, and DAF by transforming how control systems and vehicle software are developed for commercial vehicle applications. GPE designs next‑generation vehicle controls, display systems, and autonomous technologies that raise the bar for customer productivity and safety. 

Whether on highways, construction sites, urban centers, or forest roads, PACCAR trucks are recognized for exceptional quality and performance. PACCAR Electronics is central to these product identities—delivering innovations from advanced PTO functionality to intuitive, high‑value digital displays. Join us as we grow and deliver PACCAR’s future in connectivity, cybersecurity, electrification, and autonomous systems. 

Job Responsibilities

• Design and develop guided diagnostic procedures for heavy‑duty commercial vehicle electronic systems within an off‑board diagnostics platform.
• Create, document, and implement diagnostic algorithms, software components, and user interfaces.
• Develop software using a visual logic development environment following Agile methodologies.
• Provide engineering support during product launches at manufacturing facilities.
• Drive continuous improvement initiatives to enhance the quality, reliability, and usability of diagnostic systems.
• Partner with cross‑functional teams—including manufacturing, service, product development, IT, suppliers, and validation—to ensure smooth deployment of effective, user‑focused diagnostic tools.
• Collaborate with globally distributed engineering teams to meet international requirements and deliver localized content where necessary.

Qualifications & Skills

• Bachelor’s degree in Electrical Engineering, Computer Science, or a related field.
• 5+ years of experience with automotive electronic systems, including substantial hands‑on work with on‑ and off‑board diagnostics.
• Familiarity with automotive or commercial vehicle communication networks such as CAN, SAE J1939, and LIN (preferred).
• Proficiency in object‑oriented software development; experience with one or more languages such as Python, Java, C++, C#, JavaScript/TypeScript, Ruby, or Swift is highly valued.
• Ability to excel in a fast‑paced, results‑driven team environment.
• Strong analytical, problem‑solving, and communication skills (both written and verbal).
• Experience producing technical documentation, including simplified drawings and diagrams for production and service teams (highly valued).
• Willingness to travel domestically or internationally up to 5%.

PACCAR Benefits

• 401k with up to a 5% company match
• Fully funded pension plan that provides monthly benefits after retirement
• Comprehensive PTO – minimum of 10 paid vacation days (additional days are provided with additional seniority/years of service), 12 paid holidays, and sick time
• Tuition reimbursement for continued education
• Medical, dental, and vision plans for you and your family
• Flexible spending account (FSA) and health account (HSA)
• Paid short-and-long-term disability programs
• Life and accidental death and dismemberment insurance
• EAP services include wellness plans, estate planning, financial counseling and more

Additional Job Board Information

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 this role is $100,100.00 - $156,600.00 annually. This position is also eligible for a holiday gift. Additionally, this role is eligible for the full range of benefit options listed above.

PACCAR promotes equal employment opportunities by implementing policies and practices that ensure employees and applicants are not discriminated against because of their race, color, religious creed, national origin, ancestry, sex, gender, gender identity or expression, sexual orientation, age, mental or physical disability, medical condition, genetic information, military or veteran status or other legally protected status. This applies to recruitment, selection, placement, promotion, termination, rates of pay, and other conditions of employment.