Senior Engineer - Diagnostic Software

PACCAR Inc; Lewisville (TX); On-site; USD 100,100 - 156,600; Full time

Benefits offered by this job

401k with up to 5% company match

Fully funded pension plan

Comprehensive PTO – minimum of 10 paid

12 paid holidays and sick time

Tuition reimbursement

Medical, dental, and vision plans for你

Job summary

PACCAR in Lewisville, TX seeks Senior Diagnostic Engineer to develop guided diagnostic procedures and vehicle diagnostic software for heavy‑duty electronics. You will design and implement diagnostic algorithms, collaborate with global teams, support manufacturing launches, and maintain documentation; 7+ years of automotive diagnostics experience and a Bachelor’s degree required.

The role offers a comprehensive benefits package, competitive salary, and travel up to 5%.

Qualifications

• 7+ years of experience with automotive electronic systems, including hands-on work with diagnostics.
• Experience with automotive networks such as CAN, SAE J1939 and LIN is preferred.
• Strong problem-solving and written/verbal communication skills.
• Willingness to travel domestically or internationally up to 5%.
• Experience with Agile Scrum, continuous improvement, Lean, or Six Sigma methods.
• Active participation in SAE, ASME, or IEEE.
• Experience creating drawings/diagrams for production and service.

Responsibilities

• Design, document, and implement diagnostic algorithms, software, interfaces, and toolset solutions.
• Provide architectural direction for diagnostic systems and toolset capabilities.
• Develop guided diagnostic procedures using a visual logic development environment and Agile methods.
• Own and evolve diagnostic toolset requirements in collaboration with global stakeholders.
• Support manufacturing launch activities and cross-functional rollout.
• Create and review engineering specifications, architecture definitions, and technical documentation.
• Collaborate with global teams to address worldwide requirements and local content.

Skills

Automotive diagnostics

Automotive networks CAN SAE J1939 LIN

Agile Scrum Lean Six Sigma

Communication skills

Team collaboration

Education

Bachelor’s degree in Electrical Engineering, Computer Science, or related field

Tools

Visual logic development environment

Job description

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Senior Engineer - Diagnostic Software

Date: Jul 27, 2026

Location: Lewisville, TX, US, 75067

Company: PACCAR

PACCAR is seeking a Senior Diagnostic Engineer to the development of guided diagnostic procedures and vehicle diagnostic software for heavy-duty commercial vehicle electronics. This role supports product launch, drives continuous improvement, and collaborates across engineering, manufacturing, service, validation, IT, and suppliers to deliver reliable, user-focused diagnostic tools.

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, document, and implement diagnostic algorithms, software, interfaces, and toolset solutions.
• Provide architectural direction for diagnostic systems and toolset capabilities, ensuring scalability, maintainability, and alignment with business and technical needs.
• Develop guided diagnostic procedures using a visual logic development environment and Agile methods.
• Own and evolve diagnostic toolset requirements, standards, and implementation approaches in collaboration with global stakeholders.
• Support manufacturing launch activities and cross-functional rollout efforts.
• Create and review engineering specifications, requirements, architecture definitions, and technical documentation.
• Work with global teams to address worldwide requirements and local content.
• Collaborate closely with globally distributed teams, including Toolset EU, the Diagnostics team NA, and Vehicle Software Delivery ITD NA, to ensure alignment, effective coordination, and successful delivery of diagnostic solutions.

Qualifications & Skills

• Bachelor’s degree in Electrical Engineering, Computer Science, or a related field.
• 7+ years of experience with automotive electronic systems, including substantial hands‑on work with on‑ and off‑board diagnostics.
• Experience in automotive electronic systems, preferably including extensive on- and off-board diagnostics development.
• Experience with automotive or commercial vehicle networks, such as CAN, SAE J1939 and LIN preferred.
• Candidates must be able to perform in a fast‑paced, results‑oriented team environment.
• Excellent problem‑solving skills and written and verbal communication skills required.
• Willingness to grow personally and professionally.
• Ability to travel domestically or internationally up to 5%
• Experience with Agile Scrum, continuous improvement, Lean, or Six Sigma methods.
• Active participation in professional organizations such as SAE, ASME, or IEEE.
• Experience creating simplified technical drawings and diagrams for production and service.
• 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

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. Applicants and employees for this position will not be sponsored for work authorization, including, but not limited to H-1B visas, now or in the future. The salary range for the Senior Engineer - Diagnostic Software is $100,100 - $156,600 annually. Additionally, this role is eligible for a full range of benefit options listed above. This position is also eligible for a holiday gift.

Nearest Major Market: Dallas
Nearest Secondary Market: Fort Worth
Job Segment: Six Sigma, Electronics Engineer, Construction, Lean Six Sigma, Software Engineer, Management, Engineering