Diesel Emissions Test Engineer

Were ALTEN Technology USA an engineering company helping clients bring groundbreaking ideas to lifefrom advancing space exploration and life-saving medical devices to building autonomous electric vehicles. With 3000 experts across North America we partner with leading companies in aerospace medical devices robotics automotive commercial vehicles EVs rail and more.

As part of the global ALTEN Group57000 engineers in 30 countrieswe deliver across the entire product development cycle from consulting to full project outsourcing.

When you join ALTEN Technology USA youll collaborate on some of the worlds toughest engineering challenges supported by mentorship career growth opportunities and comprehensive benefits. We take pride in fostering a culture where employees feel valued supported and inspired to grow.

Position Summary

We are seeking a highly motivated Engineer to support the development validation and performance optimization of diesel engine aftertreatment systems. This individual will play a key role in testing analyzing troubleshooting and improving emissions control technologies including SCR DPF DOC and DEF/urea systems.

The ideal candidate combines strong technical knowledge of diesel emissions and aftertreatment systems with hands-on experience in testing validation data analysis and root cause investigation. This role requires close collaboration with cross-functional engineering teams suppliers and testing organizations to ensure system performance and compliance requirements are achieved.

Key Responsibilities

• Support development and validation of diesel engine aftertreatment systems and emissions control technologies.
• Evaluate performance of SCR DPF DOC DEF and related emissions reduction systems.
• Conduct testing and validation activities on engines vehicles and laboratory test setups.
• Analyze test data and identify performance issues trends and optimization opportunities.
• Perform root cause analysis and lead troubleshooting efforts related to emissions system performance.
• Investigate failures and develop corrective actions through structured problem-solving methodologies.
• Work with calibration controls validation and product engineering teams to improve system performance.
• Collect and analyze signals from vehicle and engine testing activities.
• Support emissions compliance and performance verification initiatives.
• Interface with suppliers and internal stakeholders to resolve technical issues and drive improvements.
• Prepare technical reports and communicate findings to engineering and leadership teams.

Required Qualifications

• Bachelors degree in Mechanical Engineering Chemical Engineering Automotive Engineering or related field.
• 3 years of experience in diesel engines emissions systems aftertreatment systems or powertrain validation.
• Experience with one or more of the following:
• SCR (Selective Catalytic Reduction)
• DPF (Diesel Particulate Filter)
• DOC (Diesel Oxidation Catalyst)
• DEF/Urea systems
• Diesel emissions systems
• Strong troubleshooting and root cause analysis skills.
• Experience analyzing engineering test data and developing technical recommendations.
• Familiarity with testing and validation processes.
• Strong communication and cross-functional collaboration skills.

Preferred Qualifications

• Experience with calibration tools such as ETAS INCA or CANape.
• Experience with CAN-based tools such as CANalyzer CANoe Vehicle Spy or similar.
• Diesel engine performance combustion or aftertreatment development experience.
• Experience supporting engine vehicle or emissions testing programs.
• Knowledge of catalyst technologies coatings substrates chemical reactions or emissions reduction strategies.
• Experience working with suppliers and external testing partners.
• Background in emissions compliance certification or regulatory validation.

Ideal Candidate Backgrounds

Candidates with experience in the following types of roles are highly encouraged to apply:

Aftertreatment Engineer
Emissions Engineer
Emissions Calibration Engineer
Diesel Validation Engineer
Powertrain Validation Engineer
Engine Test Engineer
Performance Engineer (Diesel/Aftertreatment)
SCR Systems Engineer
Emissions Test Engineer

Salary Range: $

The actual salary offered is dependent on various factors including but not limited to location the candidates combination of job-related knowledge qualifications skills education training and experience

All qualified applicants will receive consideration for employment and will not be discriminated against on the basis of race color religion sex sexual orientation gender identity national origin disability protected veteran status age genetic information or pregnancy.

Please beware of job seeker scams and see this important notice on our careers page for more information about our recruiting process.

Compliance Notice: Alten USA is a federal contractor subject to the requirements of the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA) and Executive Order 11246. We are an Equal Opportunity Employer and consider all qualified applicants without regard to race color religion sex sexual orientation gender identity national origin disability or veteran status.

Drug Screening Requirement: As a federal contractor Alten USA maintains a drug-free workplace. All candidates selected for employment will be required to successfully complete a pre-employment drug screening as a condition of hire.

Required Experience:

IC