ECU HIL Test Engineer – Software Validation & Automation

PACCAR Inc; Mount Vernon, Northern (WA, KY); Hybrid; USD 81,000 - 121,000; Full time

Benefits offered by this job

401k with company match

Fully funded pension plan

Comprehensive PTO

12 paid holidays

Tuition reimbursement

Medical, dental, and vision plans

Flexible spending account (FSA) and HS

Paid short- and long-term disability

Life and AD&D insurance

EAP services

Job summary

PACCAR Electronics in Mount Vernon, WA is seeking an experienced ECU Test Engineer to validate ECU software through Hardware-in-the-Loop (HIL) testing. You will work with product development teams to improve software quality, expand test coverage, and ensure on-time delivery within budget and customer expectations.

The role requires a Bachelor’s degree in engineering or computer science, 3+ years in industry, strong communication, and ability to travel up to 10%, including internationally.

Qualifications

• Bachelor’s degree in engineering, computer science, or a related technical discipline.
• 3+ years of relevant industrial experience.
• Ability to travel up to 10%, including internationally.
• Excellent written and verbal communication skills.

Responsibilities

• Develop, execute, and maintain test plans and test cases to ensure full requirements coverage and high‑quality software validation.
• Plan and manage testing activities within assigned domains, tracking progress and reporting status to stakeholders.
• Collaborate with cross-functional teams—including software development, electrical engineering, control system development, IT, and test engineering—to troubleshoot issues and ensure seamless integration.
• Continuously enhance testing processes by increasing automation, improving test efficiency, and implementing best practices for quality assurance.

Skills

Communication skills

Test planning

Team collaboration

Education

Bachelor’s degree in engineering, computer science, or related technical discipline

Job description

PACCAR Electronics in Mount Vernon, WA is seeking an experienced ECU Test Engineer to validate ECU software through Hardware-in-the-Loop (HIL) testing. You will work with product development teams to improve software quality, expand test coverage, and ensure on-time delivery within budget and customer expectations.

The role requires a Bachelor’s degree in engineering or computer science, 3+ years in industry, strong communication, and ability to travel up to 10%, including internationally.