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Engine Performance Emissions Engineer Jobs (NOW HIRING)

LiquidPiston

Engine Performance Engineer

Suffield, CT · On-site

Senior Engineer - Performance & Calibration This role is fully onsite in Bloomfield, CT, five days ... Perform engine calibration to meet targets for power, efficiency, emissions, transient response ...

Innio

Lead Engine Performance Engineer

Waukesha, WI · On-site

$102K - $135K/yr

As a Lead Engine Performance Engineer, you will work in a global engineering team to improve the performance and emissions of gas engines using simulation and testing. You will lead and contribute to ...

Innio

Lead Engine Performance Engineer

Waukesha, WI · On-site

$102K - $135K/yr

As a Lead Engine Performance Engineer, you will work in a global engineering team to improve the performance and emissions of gas engines using simulation and testing. You will lead and contribute to ...

INNIO

Lead Engine Performance Engineer

Waukesha, WI · On-site

$102K - $135K/yr

As a Lead Engine Performance Engineer, you will work in a global engineering team to improve the performance and emissions of gas engines using simulation and testing. You will lead and contribute to ...

INNIO

Lead Engine Performance Engineer

Waukesha, WI · On-site

$102K - $135K/yr

As a Lead Engine Performance Engineer, you will work in a global engineering team to improve the performance and emissions of gas engines using simulation and testing. You will lead and contribute to ...

INNIO

Lead Engine Performance Engineer

Waukesha, WI · On-site

$102K - $135K/yr

As a Lead Engine Performance Engineer, you will work in a global engineering team to improve the performance and emissions of gas engines using simulation and testing. You will lead and contribute to ...

INNIO

Lead Engine Performance Engineer

Waukesha, WI

$102K - $135K/yr

As a Lead Engine Performance Engineer, you will work in a global engineering team to improve the performance and emissions of gas engines using simulation and testing. You will lead and contribute to ...

Motorsport Hackers

$74K - $166K/yr

Engine Performance Development (EPD) is responsible for verifying the engine attributes related to ... Bachelor's Degree in Engineering, Computer Science or a related field * Experience in engine design ...

General Motors

The Role This Engineer will be responsible for developing engine performance simulation and ... About GM Our vision is a world with Zero Crashes, Zero Emissions and Zero Congestion and we embrace ...

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All JobsEngine Performance Emissions Engineer Jobs

Engine Performance Emissions Engineer information

See salary details

$109.5K

$125K

$139K

How much do engine performance emissions engineer jobs pay per year?

As of Sep 14, 2026, the average yearly pay for engine performance emissions engineer in the United States is $125,000.00, according to ZipRecruiter salary data. Most workers in this role earn between $117,500.00 and $132,500.00 per year, depending on experience, location, and employer.

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

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

Infographic showing various Engine Performance Emissions Engineer job openings in the United States as of August 2026, with employment types broken down into 89% Full Time, 9% Part Time, and 2% Contract. Highlights an 81% Physical, 2% Hybrid, and 17% Remote job distribution, with an average salary of $125,000 per year, or $60.1 per hour.

Big Bore Natural Gas Engine Engineer

Rolling Meadows, IL • On-site

Weichai America Corp.
Industrial Machinery Manufacturing • 11 - 50 employees
Learn more about Weichai America Corp.external

$130K - $150K/yr

Full-time

Medical, Dental, Vision, Retirement

Re-posted 20 days ago

Key responsibilities

  • Support the design, development, and optimization of large-bore natural gas engines and related subsystems.

  • Plan and execute engine testing, analyze test results, and recommend design or calibration changes.

  • Provide technical support for field issues, troubleshooting, and engine performance improvement in customer installations.

Job description

Weichai America is seeking an experienced Big Bore Natural Gas Engine Engineer to support the development of next-generation power generation technologies. In this highly visible engineering role, you will lead the design, analysis, testing, and continuous improvement of large-bore natural gas engines, helping deliver reliable, efficient, and environmentally responsible power solutions. Working with a collaborative team of engineers and technical experts, you will contribute to innovative products that serve customers across the industrial, energy, and power generation markets.

Position Summary

The Big Bore Natural Gas Engine Engineer is responsible for the design, development, performance optimization, and technical support of large-displacement natural gas engines used in power generation, oil & gas, and industrial applications. The role covers engine performance, combustion, emissions compliance, durability, and field troubleshooting across stationery and mobile applications.

Key Responsibilities

Engine Design & Development

  • Support design and development of large-bore natural gas engines and related subsystems.
  • Optimize combustion performance, fuel efficiency, and emissions compliance.
  • Develop improvements for reliability, durability, and service life.
  • Collaborate with mechanical, controls, and electrical teams for system integration.
     

Performance & Emissions Optimization

  • Analyze engine performance data to improve efficiency and output.
  • Support emissions compliance for NOx, CO, VOC, and methane slip regulations.
  • Work on combustion tuning and control calibration.
     

Testing & Validation

  • Plan and execute engine test programs.
  • Analyze test results and recommend design or calibration changes.
  • Support prototype and validation testing.
     

Field Support & Troubleshooting

  • Provide technical support for field issues and root-cause investigations.
  • Support commissioning and troubleshooting of engines in customer installations.
  • Work with service teams to improve engine reliability and maintainability.
     

System Integration

  • Support integration with: 
    • Generator systems
    • Fuel systems
    • Cooling and lubrication systems
    • Aftertreatment systems
    • Control and monitoring systems
       

Documentation & Compliance

  • Prepare technical reports and documentation.
  • Support regulatory compliance and certification activities.
  • Support customer and internal technical reviews.
     

Required Qualifications

  • Bachelor’s or higher degree in Mechanical Engineering, Aerospace Engineering, or related field.
  • Experience with large natural gas engines or industrial combustion systems.
  • Knowledge of internal combustion engine operation and thermodynamics.
  • Experience in engine testing and data analysis.
  • Familiarity with emissions regulations and engine controls.
  • Strong troubleshooting and analytical skills.


 Preferred Qualifications

  • Experience with big bore engines.
  • Experience in power generation or oil & gas engine applications.
  • Knowledge of combustion simulation or engine modeling tools.
  • Experience with calibration and engine control systems.
  • Field commissioning or service experience.


 Key Skills

  • Engine performance analysis
  • Combustion & emissions knowledge
  • Test data interpretation
  • Root cause analysis
  • Cross-functional teamwork
  • Technical documentation
  • Project execution


 Typical Applications Supported

  • Natural gas generator sets
  • Industrial power engines
  • Data center backup generation


Benefits
Comprehensive health benefits, including medical, dental and vision coverage, STD and LTD, HSA and FSA options, 401(k) with company match.

 

Equal Opportunity Statement

At Weichai America Corp., we are committed to creating an inclusive environment where everyone is valued and respected. We celebrate diversity and are proud to be an equal opportunity employer.


We make hiring decisions based on qualifications, experience, and business needs. We do not discriminate based on race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, or any other protected status.


If you require accommodations during the application or interview process, please contact hr@weichaiamerica.com for Accommodation Requests.


Weichai America Corp. is a drug-free workplace. All candidates will be required to undergo and successfully pass a drug screening and background check as part of the hiring process.