> Markdown version of [/jobs/ext/1992279-vehicle-software-and-diagnostics-tool-test-engineer](https://www.wearedevelopers.com/jobs/ext/1992279-vehicle-software-and-diagnostics-tool-test-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Vehicle Software and Diagnostics Tool Test Engineer - **Company:** PACCAR Inc - **Location:** Seattle, WA, United States - **Experience:** Starter - **Salary:** $70,500.0 - $105,800.0 - **Contract:** Permanent contract - **Skills:** Testing (Software), CAN Bus, Computer Engineering, Strategies of Testing, Information Technology - **Published:** August 8, 2026 - **Apply:** https://diversityjobs.com/main/sendform/8/8/28176/1/17871734?backUrl=%2Fcareer%2F17871734%2FVehicle-Software-Diagnostics-Tool-Test-Engineer-Washington-Mount-Vernon ## About the Role * 0-2 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 ## Description 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 ## Related Videos - [Excellent Software Testing](https://www.wearedevelopers.com/videos/87-excellent-software-testing) - [Agile work at CARIAD – Creating a customer web application for controlling the vehicle ](https://www.wearedevelopers.com/videos/200-agile-work-at-cariad-creating-a-customer-web-application-for-controlling-the-vehicle) - [Swapping a Data Warehouse at Runtime: Zero-Downtime Migration Without Changing a Single Client](https://www.wearedevelopers.com/videos/100311-swapping-a-data-warehouse-at-runtime-zero-downtime-migration-without-changing-a-single-client) - [A Hitchhikers Guide to Container Security - Automotive Edition 2024](https://www.wearedevelopers.com/videos/1119-a-hitchhikers-guide-to-container-security-automotive-edition-2024) - [Car's are Technology on Wheels - Impact of Software and IT Competence in Automotive](https://www.wearedevelopers.com/videos/780-car-s-are-technology-on-wheels-impact-of-software-and-it-competence-in-automotive) - [Dirty Tests And How To Clean Them](https://www.wearedevelopers.com/videos/515-dirty-tests-and-how-to-clean-them) ## Related Articles - [How software is steering vehicle technology](https://www.wearedevelopers.com/magazine/515-how-software-is-steering-vehicle-technology) - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Software Engineer Career: Things You Should Know](https://www.wearedevelopers.com/magazine/143-software-engineer-career-things-you-should-know) - [What is a Test Plan: Guide to Test Planning](https://www.wearedevelopers.com/magazine/191-what-is-a-test-plan-guide-to-test-planning) - [What is Software Engineering?](https://www.wearedevelopers.com/magazine/289-what-is-software-engineering)