Requisition SummaryThe PACCAR Technical Center is seeking an experienced
Thermal and CFD Engineer for aftertreatment, exhaust, and underbody thermal management to drive innovation in heavy-duty truck development. In this role, you'll partner directly with Kenworth and Peterbilt engineering teams to predict design viability, validate concepts through simulation-to-test correlation, and translate complex technical findings into actionable recommendations.
Job Functions / Responsibilities- Perform 3D thermal and CFD analysis for exhaust and aftertreatment systems
- Predict heat loss, pressure drop, underhood and underbody temperatures, under various load cases
- Evaluate DEF system thermal behavior, including doser, hoses, tank interfaces, and filling-related CFD needs
- Develop design recommendations on:
- insulation strategy
- heat shields
- component clearances
- exhaust routing geometry
- bracket/structure thermal protection
- thermal zone definition
- Support concept-phase architecture studies, DFMEA inputs, and comparative A/B trade studies
- Conduct quick-turn sensitivity studies and simulation reruns to support design reviews
- Correlate simulation with test/validation data and help build a reusable simulation-to-validation knowledge base
- Develop simulation methodologies for underhood and underbody simulations
- Create engineering guidelines and best practices for clearance, shielding, and thermal protection
- Work cross-functionally with packaging, reliability, validation, plant support, and warranty teams
Qualifications- 7+ years of engineering experience
- 5+ years of CFD & Thermal Analysis experience
- Experience in industries such as automotive, aerospace, electronics cooling, HVAC, battery thermal management, or other relevant industries
- Comprehension of heat transfer, thermodynamics, fluid mechanics, and numerical methods
- Expertise in CFD modeling, including meshing, solver setup, boundary conditions, and post-processing
- Skilled in CFD/thermal tools such as STAR-CCM+, Fluent, TAITherm
- Experience with CAD tools such as Creo, SolidWorks, CATIA, or similar
- Excellent problem-solving, analytical, and technical reporting skills
- Effective communication and teamwork skills for working with design, testing, and manufacturing teams
EducationBachelor's degree in Mechanical Engineering or related field, MS or PhD preferred.
Paccar BenefitsAs a U.S. PACCAR employee, you have a full range of benefit options including:
- Competitive salary and 401k with up to a 5% company match
- Fully funded pension plan that provides monthly benefits after retirement
- Comprehensive paid time off - Minimum of 10 paid vacation days, 12 paid holidays, and sick leave
- Tuition reimbursement for continued education
- Medical, dental, and vision plans for you and your family
- Flexible spending accounts (FSA) and health savings account (HSA)
- Paid short-and long-term disability program
- Life and accidental death and dismemberment insurance
- EAP services including wellness plans, estate planning, financial counseling and more
- Global Fortune 500 company with a wide array of growth and development opportunities
- Work alongside experienced goal-oriented colleagues recognized as experts in their field
Additional Job Board InformationPACCAR 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. The salary range for Senior/Lead CFD Simulation Engineer is $104,100- $162,900 annually. Additionally, this role is eligible for a full range of benefit options listed above. This is also eligible for a holiday gift.
