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Engine Engineer Jobs in Illinois (NOW HIRING)

Cintal

Engine Control Calibration Engineer

Chillicothe, IL · On-site

$80K - $100K/yr

Collaborate with technical leads and cross-functional engineering teams. * Support testing, validation, and continuous improvement of engine control strategies. EDUCATION & EXPERIENCE: * Bachelor ...

ARi

Engine Test and Performance Engineer

Peoria, IL

$70K - $75K/yr

The main function of a Software Planning engineer is to evaluate and coordinate the engine software design content and schedule, software feature functionality and quality to enable optimal operation ...

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Engine Engineer information

See Illinois salary details

$24

$51

$74

How much do engine engineer jobs pay per hour?

As of Aug 28, 2026, the average hourly pay for engine engineer in Illinois is $51.97, according to ZipRecruiter salary data. Most workers in this role earn between $41.92 and $60.34 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an engine engineer?

To thrive as an Engine Engineer, you need a solid background in mechanical engineering principles, thermodynamics, and combustion, typically supported by a relevant engineering degree. Familiarity with computer-aided design (CAD) software, simulation tools like MATLAB or ANSYS, and industry certifications such as Professional Engineer (PE) licensure are often expected. Strong problem-solving abilities, teamwork, and effective communication distinguish top performers in this role. These skills and qualifications are crucial for designing efficient engines, ensuring safety and compliance, and successfully collaborating on complex engineering projects.

What are some common challenges engine engineers face when working on new engine designs?

Engine Engineers often encounter challenges such as balancing performance, efficiency, and emissions requirements while staying within cost and timeline constraints. Integrating new technologies, such as hybrid systems or alternative fuels, can also introduce complexities in design and testing. Additionally, collaborating closely with multidisciplinary teams—including electrical, software, and manufacturing engineers—is essential to ensure compatibility and optimize the overall system. Staying updated with evolving industry standards and regulatory requirements adds another layer of complexity to the role.

What is the difference between Engine Engineer vs Mechanical Engineer?

AspectEngine EngineerMechanical Engineer
Required CredentialsBachelor's in Mechanical, Aerospace, or Automotive Engineering; often requires specific engine-related certificationsBachelor's in Mechanical Engineering; professional engineer (PE) license optional
Work EnvironmentDesign, develop, test engines for vehicles, aircraft, or machinery; often in labs or manufacturing plantsDesign and analyze mechanical systems across industries; work in labs, factories, or offices
Industry UsagePrimarily in automotive, aerospace, and heavy machinery sectorsWidely used across manufacturing, automotive, aerospace, and energy sectors

Engine Engineers focus specifically on designing and testing engines for vehicles and machinery, requiring specialized knowledge of engine systems. Mechanical Engineers have a broader scope, working on various mechanical systems beyond engines. Both roles share similar educational backgrounds but differ in specialization and work focus.

What is an engine engineer?

An engine engineer designs, develops, and tests engines used in vehicles, aircraft, or industrial machinery. They analyze performance data, improve efficiency, and ensure safety standards, often working with CAD software and engine testing equipment. A bachelor's degree in mechanical or automotive engineering is typically required for this role.

What are popular job titles related to Engine Engineer jobs in Illinois?

For Engine Engineer jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching Engine Engineer jobs in Illinois look for?

The top searched job categories for Engine Engineer jobs in Illinois are:

Engine Engineer jobs near you
Infographic showing various Engine Engineer job openings in Illinois as of August 2026, with employment types broken down into 88% Full Time, 9% Part Time, and 3% Contract. Highlights an 85% Physical, 5% Hybrid, and 10% Remote job distribution, with an average salary of $108,097 per year, or $52 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

Full-time

Medical, Dental, Vision, Retirement

Re-posted 3 days ago

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.



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