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Engine Performance Engineer Jobs (NOW HIRING)

LiquidPiston

Engine Performance Engineer

Suffield, CT · On-site

As Senior Engineer - Performance & Calibration you will be a key contributor to engine performance development activities aimed at bringing LiquidPiston's rotary engines to production. You will work ...

LiquidPiston

Senior Engine Performance Engineer

Suffield, CT · On-site

$101.50K - $139.40K/yr

Senior Engine Performance Engineer This role is fully onsite in Bloomfield, CT, five days per week, and the company will be relocating to Suffield, CT later in 2026.​​​​​ About LiquidPiston:

Hermeus

Performance Engineer

Los Angeles, CA · On-site

$91.80K - $187.45K/yr

Support engine-airframe integration efforts, including takeoff thrust optimization and safety-focused performance methodologies. * Author and execute flight test plans to evaluate propulsion ...

Hermeus

Performance Engineer

Los Angeles, CA · On-site

$91.80K - $187.45K/yr

Support engine-airframe integration efforts, including takeoff thrust optimization and safety-focused performance methodologies. * Author and execute flight test plans to evaluate propulsion ...

Hermeus

Performance Engineer

Los Angeles, CA

Support engine-airframe integration efforts, including takeoff thrust optimization and safety-focused performance methodologies. * Author and execute flight test plans to evaluate propulsion ...

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How much do engine performance engineer jobs pay per hour?

As of Jun 3, 2026, the average hourly pay for engine performance engineer in the United States is $60.11, according to ZipRecruiter salary data. Most workers in this role earn between $49.28 and $68.03 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an Engine Performance Engineer, and why are they important?

To thrive as an Engine Performance Engineer, you need a strong background in mechanical or automotive engineering, with expertise in thermodynamics, combustion, and engine systems, typically supported by a relevant engineering degree. Familiarity with simulation software (such as MATLAB, GT-Power), engine calibration tools, and data acquisition systems is essential. Analytical thinking, problem-solving abilities, and effective communication are important soft skills for collaborating with multidisciplinary teams and interpreting complex data. These skills and qualities are crucial for optimizing engine performance, ensuring regulatory compliance, and driving innovation in vehicle technology.

How does an Engine Performance Engineer typically collaborate with other teams during a project?

Engine Performance Engineers work closely with cross-functional teams, including design, manufacturing, and testing departments. They regularly communicate with calibration engineers, test cell operators, and software developers to ensure engine performance targets are met. Collaboration often involves reviewing test data, troubleshooting issues, and optimizing engine parameters in line with project milestones. This collaborative approach helps ensure that engine systems are both efficient and compliant with regulatory standards.

What does an Engine Performance Engineer do?

An Engine Performance Engineer is responsible for optimizing the efficiency, power output, and emissions of engines, typically in automotive or aerospace applications. They analyze engine data, develop and test new technologies, and collaborate with design and testing teams to improve engine performance. Their work involves using simulation tools, conducting experiments, and ensuring compliance with environmental and safety regulations. These engineers play a crucial role in making engines more reliable, fuel-efficient, and environmentally friendly.

What is the difference between Engine Performance Engineer vs Powertrain Engineer?

AspectEngine Performance EngineerPowertrain Engineer
Required CredentialsBachelor's in Mechanical or Automotive Engineering, relevant certificationsBachelor's in Mechanical or Automotive Engineering, relevant certifications
Work EnvironmentDesign, testing, and optimization of engine componentsDesign and integration of entire powertrain systems including engine, transmission
Industry UsageAutomotive manufacturers, racing teams, OEMsAutomotive manufacturers, OEMs, hybrid/electric vehicle companies

Engine Performance Engineers focus specifically on optimizing engine components and performance, while Powertrain Engineers work on the entire drivetrain system, including engines, transmissions, and hybrid systems. Both roles require similar technical backgrounds but differ in scope and focus within the automotive industry.

More about Engine Performance Engineer jobs
What are the most commonly searched types of Engine Performance Engineer jobs? The most popular types of Engine Performance Engineer jobs are:
What job categories do people searching Engine Performance Engineer jobs look for? The top searched job categories for Engine Performance Engineer jobs are:
Engine Performance Engineer jobs near you
Infographic showing various Engine Performance Engineer job openings in the United States as of May 2026, with employment types broken down into 100% Full Time. Highlights an 83% In-person, 11% Hybrid, and 6% Remote job distribution, with an average salary of $125,019 per year, or $60.1 per hour.
Engine Performance Engineer

Engine Performance Engineer

LiquidPiston

Suffield, CT • On-site

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 16 days ago

Job description

Senior Engineer - Performance & Calibration
This role is fully onsite in Bloomfield, CT, five days per week, and the company will be relocating to Suffield, CT later in 2026.
About LiquidPiston:
LiquidPiston is redefining the internal combustion engine through its innovative rotary X-engine architecture. Our mission is to deliver compact, fuel-efficient, high power-density engines for a wide range of applications. We are seeking a highly motivated Senior Engineer – Performance & Calibration to help bring our advanced rotary engines to production.
Position Summary:
As Senior Engineer – Performance & Calibration you will be a key contributor to engine performance development activities aimed at bringing LiquidPiston’s rotary engines to production. You will work closely within a team of Test Engineers, Technicians, and Performance Engineers as you develop engine calibration strategies and methodologies to meet performance targets. In addition, you will collaborate with Chief Engineers, Design Engineers, and other cross-functional team members to help define critical data and insights needed to inform engine architecture and design decisions.
A broad range of experience and skills, along with the ability to adapt quickly from one task to another, will be essential for success. This role places strong emphasis on engine calibration supported by deep knowledge of engine performance, efficiency, testing, and data analysis. The position requires a solid foundation in thermal sciences and engineering principles, and the ability to work collaboratively with analysts using tools such as GT Power and combustion CFD platforms. You will also contribute to continuous improvement initiatives aimed at increasing the efficiency and effectiveness of simulation and development work.
Responsibilities:
  • Perform engine calibration to meet targets for power, efficiency, emissions, transient response, and off-nominal operating conditions.
  • Develop efficient processes and methods for engine calibration tailored to the rotary X-engine platform.
  • Document and communicate results of calibration efforts clearly and effectively.
  • Design and execute engine test plans for performance development, including analysis and reporting of results.
  • Collaborate with analysts running GT Power, combustion CFD, or other simulation tools to support holistic, model-based development approaches.
  • Work closely with cross-functional design and test teams to drive engine improvements and support design decisions.
  • Develop and follow standardized test and calibration procedures specific to LiquidPiston’s engine architecture.
  • Contribute to continuous improvement efforts that enhance testing efficiency, simulation accuracy, and overall development effectiveness.
  • Stay current with emerging engine technologies, calibration strategies, and simulation tools through self-directed learning and formal training.
Requirements:
  • PhD or MS in Mechanical Engineering (BS with significant relevant experience will also be considered).
  • Strong grasp of thermodynamics, physics, combustion, and engine efficiency principles.
  • Demonstrated engine testing and calibration experience.
  • Proficiency with MATLAB, CAN communication tools, Python, or other scripting languages.
  • Strong problem-solving and analytical skills.
  • Strong team player with the ability to be self-directed in a fast-paced development environment.
Beneficial:
  • Experience with simulation tools including GT Power, CONVERGE, and ANSYS Fluent.
  • Familiarity with optimization methods, especially as applied to engine development and calibration.
Benefits & Perks:
  • Flexible PTO: We value work-life balance and encourage time to rest and recharge.
  • Health & Wellness: Comprehensive medical, dental, and vision coverage. You choose what works best for you.
  • Equity Participation: Permanent employees receive RSUs to share in our success.
  • 401(k) Match: We offer a 401k w/100% matching up to 3% of your salary and then 50% of contributions between 3-5%
  • Career Growth: Ongoing training, mentorship, and learning opportunities to accelerate your growth.
Our Culture:
At LiquidPiston, we embrace challenges, move fast, and celebrate curiosity. Our team thrives on collaboration, creativity, and perseverance. We understand that innovation involves risk and we’re not afraid to fail forward.
Equal Opportunity Employer:
LiquidPiston, Inc. is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.
All offers of employment at LiquidPiston are contingent upon the successful completion of a pre-employment background check and drug screening.

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