Engine Aftertreatment Intern Powertrain Development

Job Summary

Global PACCAR Powertrain organization is seeking a motivated Engine Aftertreatment Verification Intern to support testing verification and system integration activities for PACCARs advanced engine aftertreatment systems.

What to Expect

• In-person internships 40 hours a week minimum of 12 weeks
• Location: Mount Vernon WA
• Start Dates: May 18 2026 or June 22 2026
• Visa Sponsorship: Not available for this position (H-1B TN OPT etc.)

About PACCAR

PACCAR Inc founded in 1905 is a Fortune 500 global technology leader in the design manufacture and customer support of premium light- medium- and heavy-duty trucks under the Kenworth Peterbilt and DAF brands. PACCAR also provides advanced diesel engines financial services information technology and aftermarket support that power its global operations.

Your next career move starts herewhether youre passionate about transportation technology engineering innovation or supporting a world-class organization. Join the PACCAR team and help shape the future of commercial vehicle solutions.

About Global PACCAR Powertrain

Global PACCAR Powertrain designs and develops integrated highefficiency engines automated transmissions and axle systems for Kenworth Peterbilt and DAF truckssupported by essential functions such as testing validation and aftersales service. Through advanced engineering vertically integrated manufacturing and robust aftermarket support the organization delivers powertrain solutions optimized for performance durability fuel efficiency and sustainability. Our portfolio includes PACCARs MX13 and MX11 engines TX12 and TX18 automated transmissions and advanced axle technologiesengineered to operate as a fully integrated system that enhances drivability reduces lifecycle cost and ensures consistent reliability across PACCARs global brands.

As part of this team you will collaborate with a global crossfunctional group focused on delivering innovative engineering solutions that maximize customer uptime and drive operational excellence.

Job Responsibilities

• Collaborate with industry professionals on diesel engine aftertreatment verification and integration projects.
• Execute testing in vehicles and engine test cells to validate aftertreatment system performance.
• Analyze test data refine analysis tools and draw meaningful technical conclusions.
• Support continuous improvement efforts through test procedure enhancements and documentation updates.
• Provide recommendations based on test findings to drive next-step decisions.

Qualifications

Required:

• Currently in 3rd or 4th year of a bachelors program (graduating ) in Engineering (Mechanical Electrical Software Mechatronics) Sciences or related STEM fields.
• Basic understanding of diesel exhaust aftertreatment technologies (DOC DPF SCR DEF).
• Foundational knowledge of engine control systems and CAN communication networks.
• Strong analytical communication and presentation skills.
• Ability to work both independently and collaboratively.

Preferred:

• Experience with data analysis and scripting (MATLAB/Simulink).
• Hands-on experience with data acquisition and calibration tools such as ATI Vision Vector CANape/CANalyzer or ETAS INCA.
• Prior involvement in test planning or experimental data processing.

Paccar Benefits

• The pay range for this position is $25.00 - $30.00/hour (pay varies by undergraduate and graduate degree)
• SIP 401k with up to a 5% company match
• Paid Holidays (work-location scheduled)
• Sick Leave (WA only)
• Health Dental and Vision insurance
• Flexible Spending Account (FSA) / Health Savings Account (HSA)
• Life and Accidental Death and Dismemberment insurance
• EAP services include wellness plans estate planning financial counseling and more

Additional Job Board Information

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.