Senior Diagnostic Software Engineer

PACCAR is seeking a Senior Diagnostic Engineer to lead 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.

About the role

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.

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.
• Lead or contribute to major projects and complex technical problem solving.
• Create and review engineering specifications, requirements, architecture definitions, and technical documentation.
• Mentor others, support training needs, and contribute to technical roadmaps.
• 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, Mechanical Engineering, or a related field
• 8+ years of experience with development and/or testing of onboard diagnostic software for semi trucks
• Experience with CAN, SAE J1939, LIN, and object-oriented programming languages such as Python, Java, C++, C#, JavaScript/TypeScript, Ruby, or Swift
• Strong problem-solving, communication, and documentation skills
• Experience with data analysis, engineering tools, simulation, and test environments
• Ability to work in a fast-paced, results-oriented environment
• Willingness to travel up to 5% domestically or internationally
• Leadership experience mentoring others and running larger projects preferred
• Experience with Agile Scrum, continuous improvement, Lean, or Six Sigma methods preferred
• Active participation in professional organizations such as SAE, ASME, or IEEE preferred
• Experience creating simplified technical drawings and diagrams for production and service preferred

PACCAR Benefits

• 401(k) with up to a 5% company match
• 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 Diagnostic Software Engineer is $114,500 - $179,100 annually. Additionally, this role is eligible for a full range of benefit options listed above. This position is also eligible for a holiday gift.