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Diesel Engine Aftertreatment Performance Engineer Jobs

Collabera

Development Engineer II

Waterloo, IA

Responsible for an engine dyno test cell and perform systematic aftertreatment performance testing ... diesel engines, emission control technologies and engine dynamometer test cells

Amentum

Diesel Engine Inspector

Norfolk, VA · On-site

$50 - $60/hr

We have an immediate opening for a Diesel Engine Inspector to support our Mid-Atlantic Regional ... Knowledge of engine performance analysis, repairs, machinery vibration, and failure analysis

Pae

Diesel Engine Inspector

Norfolk, VA · On-site

$50 - $60/hr

We have an immediate opening for a Diesel Engine Inspector to support our Mid-Atlantic Regional ... Knowledge of engine performance analysis, repairs, machinery vibration, and failure analysis

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Diesel Engine Aftertreatment Performance Engineer information

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How much do diesel engine aftertreatment performance engineer jobs pay per hour?

As of Sep 13, 2026, the average hourly pay for diesel engine aftertreatment performance engineer in the United States is $39.75, according to ZipRecruiter salary data. Most workers in this role earn between $32.69 and $45.19 per hour, depending on experience, location, and employer.

What does a diesel engine aftertreatment performance engineer do?

A Diesel Engine Aftertreatment Performance Engineer is responsible for designing, testing, and optimizing aftertreatment systems that reduce harmful emissions from diesel engines. Their work involves ensuring compliance with environmental regulations, analyzing system performance, and troubleshooting issues related to components like diesel particulate filters (DPF), selective catalytic reduction (SCR) systems, and oxidation catalysts. They collaborate with other engineers to improve engine efficiency and help manufacturers meet emissions standards.

What are the key skills and qualifications needed to thrive as a diesel engine aftertreatment performance engineer?

To thrive as a Diesel Engine Aftertreatment Performance Engineer, you need a strong background in mechanical or automotive engineering, hands-on experience with diesel engine systems, and knowledge of emissions regulations. Familiarity with diagnostic tools, engine calibration software, and aftertreatment simulation platforms such as MATLAB/Simulink or AVL is typically required. Analytical thinking, problem-solving abilities, and effective communication skills set top performers apart in this role. These skills ensure the engineer can optimize aftertreatment systems for regulatory compliance, reliability, and overall engine performance.

How does a diesel engine aftertreatment performance engineer typically collaborate with other departments during emissions testing and validation?

Diesel Engine Aftertreatment Performance Engineers frequently work cross-functionally with teams such as calibration, controls, and testing during emissions testing and validation phases. They coordinate closely with test engineers to design and execute test plans, analyze data with calibration specialists, and communicate findings to product development and regulatory compliance teams. This collaborative approach ensures that aftertreatment systems meet emission standards, function reliably, and integrate seamlessly with the overall engine system. Regular meetings and shared documentation platforms are commonly used to streamline communication and address challenges promptly.

What are popular job titles related to Diesel Engine Aftertreatment Performance Engineer jobs?

For Diesel Engine Aftertreatment Performance Engineer jobs, the most frequently searched job titles are:

Diesel Engine Technician / Heavy Duty Specialist

Cincinnati, OH • On-site

Joseph Buick GMC
Retail • 11 - 50 employees
Learn more about Joseph Buick GMCexternal

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 9 hours ago

Job description


Joseph Buick GMC is seeking a skilled and driven Diesel Engine Technician to join our growing service team. With a massive local market for Duramax diesel trucks, commercial fleets, our shop offers an incredible volume of steady, high-paying work.
We are looking for a specialist who understands the complexities of modern diesel systems. While GM/Duramax experience is a major plus, we are fully prepared to fast-track factory training and certifications for an experienced diesel tech looking to elevate their career in a stable, family-owned dealership environment.
What We Offer
  • Top Earning Potential: Highly competitive flat-rate structure.
  • Paid GM Factory Training: Comprehensive, fully funded access to online and hands-on GM training schools to get you certified.
  • Modern Facility: Access to specialized diagnostic equipment, and the latest software tools.
  • Excellent Benefits: Full medical, dental, and vision coverage options.
  • Retirement Planning: 401(k) program with dealership investment.
  • Time Off: Paid vacation, holidays.
  • Career Growth: Clear pathways into master technician roles and shop leadership.

Key Responsibilities
  • Advanced Diagnostics: Diagnose complex diesel engine performance issues, driveability concerns, and emissions/exhaust aftertreatment systems (DEF).
  • Major & Minor Repairs: Perform everything from routine maintenance and component replacements to complete engine tear-downs, rebuilds, and replacements.
  • Electrical & Hydraulic Systems: Troubleshoot and repair heavy-duty electrical networks, module programming, and related mechanical systems.
  • Inspection & Documentation: Conduct thorough multi-point inspections, clearly detailing the cause and correction for service advisors and fleet clients.
  • Quality Assurance: Road-test vehicles to verify repairs meet strict safety and manufacturer specifications.
  • Team Collaboration: Maintain communication with the parts department and service desk to keep cycle times low and efficiency high.

Job Requirements
  • Experience: Proven experience diagnosing and repairing light-to-medium duty diesel engines (Duramax, Powerstroke, Cummins, etc.).
  • Certifications: ASE Diesel certifications (A9, T2, etc.) or manufacturer-specific training is highly preferred.
  • Tools: Must possess a complete inventory of personal technician tools appropriate for heavy mechanical work.
  • Skills: High proficiency with modern scan tools, digital multi-meters, and reading complex wiring diagrams.
  • Credentials: Valid driver's license with a clean driving record.
  • Background: Must be willing to undergo standard pre-employment screening, including a background check and drug test.

Why Choose Joseph Buick GMC?
We know that top-tier diesel talent is hard to find, and we treat our specialists accordingly. At Joseph Buick GMC, you aren't just another clock number-you're a vital part of a family-owned business that has supported the Cincinnati community for decades. If you want a clean shop, plenty of truck work, and a team that has your back, we want to talk to you.
We are an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status. We are committed to providing a safe, drug-free work environment. Applicants must be willing to submit to a pre-employment background check and drug test. Interested candidates must possess a valid driver's license and have a satisfactory driving record.

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