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Performance Engineering Jobs in Illinois (NOW HIRING)

Performance Engineer

Pekin, IL ยท On-site

$98K - $162K/yr

Interface with engineering resources outside of the station to support/implement performance improvement initiatives. * Work effectively in a team environment as a leader, member and/or facilitator.

Performance Engineer

Pekin, IL ยท On-site

$98K - $162K/yr

Interface with engineering resources outside of the station to support/implement performance improvement initiatives. * Work effectively in a team environment as a leader, member and/or facilitator.

Performance Engineer

Pekin, IL ยท On-site

$98K - $162K/yr

Interface with engineering resources outside of the station to support/implement performance improvement initiatives. * Work effectively in a team environment as a leader, member and/or facilitator.

Interface with engineering resources outside of the station to support/implement performance improvement initiatives. * Work effectively in a team environment as a leader, member and/or facilitator.

Software Performance Engineer

Chicago, IL ยท On-site

$144K/yr

The Software Performance Engineer ensures software is adhering to quality standards. The position ... Collaborate with product management and engineering to help define and implement requirements for ...

Interface with engineering resources outside of the station to support/implement performance improvement initiatives. * Work effectively in a team environment as a leader, member and/or facilitator.

Graduate Performance Engineer

Chicago, IL ยท On-site

$180 - $240/hr

... Computer Science, Engineering, or a related technology field. * Proficiency in at least one ... performance culture, and our commitment to giving back. From entering dynamic new markets to ...

Current university student graduating between September 2026 - July 2027 that is pursuing a degree in Computer Science, Engineering, or a related technology field. * Proficiency in at least one ...

Current university student graduating between September 2026 - July 2027 that is pursuing a degree in Computer Science, Engineering, or a related technology field. * Proficiency in at least one ...

Software Performance Engineer

Chicago, IL ยท On-site

$144K/yr

The Software Performance Engineer ensures software is adhering to quality standards. The position ... Collaborate with product management and engineering to help define and implement requirements for ...

Software Performance Engineer

Chicago, IL ยท On-site

$144K/yr

The Software Performance Engineer ensures software is adhering to quality standards. The position ... Collaborate with product management and engineering to help define and implement requirements for ...

Showing results 21-40

Performance Engineering information

See Illinois salary details

$10

$58

$95

How much do performance engineering jobs pay per hour?

As of Sep 5, 2026, the average hourly pay for performance engineering in Illinois is $58.24, according to ZipRecruiter salary data. Most workers in this role earn between $47.74 and $65.91 per hour, depending on experience, location, and employer.

What is performance engineering?

Performance engineering is a discipline in software and systems development focused on ensuring applications and systems meet required speed, scalability, and stability standards. It involves analyzing, designing, testing, and optimizing performance throughout the software development lifecycle. Performance engineers use specialized tools and methodologies to detect bottlenecks, simulate real-world loads, and recommend improvements. Their goal is to deliver reliable, high-performing products to end users.

How does a performance engineer typically collaborate with development and operations teams to resolve application bottlenecks?

Performance Engineers play a vital role in bridging the gap between development and operations teams. They work closely with developers to analyze application code and identify potential performance issues early in the development lifecycle. Additionally, they partner with operations teams to monitor system performance in production, interpret logs, and recommend infrastructure or configuration changes. This collaborative approach helps ensure that performance bottlenecks are identified and addressed quickly, leading to more reliable and scalable applications.

What are the key skills and qualifications needed to thrive as a performance engineer, and why are they important?

To thrive as a Performance Engineer, you need strong analytical abilities, expertise in software performance testing, and a background in computer science or a related field. Familiarity with tools like JMeter, LoadRunner, APM solutions, and scripting languages is typically required, along with relevant certifications such as ISTQB Performance Testing. Exceptional problem-solving skills, attention to detail, and effective communication help you identify bottlenecks and collaborate with development teams. These skills are crucial for ensuring applications meet performance standards and deliver a seamless user experience.

What is the difference between Performance Engineering vs Performance Testing?

AspectPerformance EngineeringPerformance Testing
FocusDesigning, developing, and implementing strategies to ensure system performance throughout the development lifecycleExecuting tests to measure system performance under specific conditions
ActivitiesPerformance planning, monitoring, optimization, and capacity planningLoad testing, stress testing, and benchmarking
Skills & CertificationsPerformance testing tools, scripting, monitoring, performance analysisPerformance testing tools, scripting, test execution
Work EnvironmentCollaborates with developers, architects, and operations teamsPrimarily testing teams and QA departments

Performance Engineering involves proactive strategies to optimize system performance throughout development, while Performance Testing focuses on evaluating system performance through specific tests. Both roles require similar skills but differ in scope and objectives, with Performance Engineering being more comprehensive and ongoing.

How much do performance engineers make in the US?

Performance engineers in the US typically earn between $80,000 and $130,000 annually, depending on experience, location, and industry. Senior roles or those with specialized skills in tools like JMeter or LoadRunner can command higher salaries, especially in tech hubs.

What do you need to be a performance engineer?

Performance engineers need a strong understanding of software architecture, performance testing tools, and scripting languages like Python or Java. They often have a background in computer science or engineering, experience with performance testing tools such as JMeter or LoadRunner, and knowledge of system monitoring and analysis. Certifications in performance testing or related fields can also be beneficial.

What are the most commonly searched types of Performance Engineering jobs in Illinois?

The most popular types of Performance Engineering jobs in Illinois are:

Infographic showing various Performance Engineering job openings in Illinois as of August 2026, with employment types broken down into 83% Full Time, 15% Part Time, and 2% Contract. Highlights an 81% Physical, 2% Hybrid, and 17% Remote job distribution, with an average salary of $121,146 per year, or $58.2 per hour.

Performance Engineer

NRG Energy

Pekin, IL โ€ข On-site

$98K - $162K/yr

Full-time

Medical, Dental, Vision, Retirement

Re-posted 4 days ago


Key responsibilities

  • Develop, implement, and oversee a program for monitoring thermal performance of power generating equipment.

  • Assist in assessing, correcting, and optimizing equipment operation to meet performance indicators.

  • Interface with engineering resources and support performance improvement initiatives.


Job description

As an NRG employee, we encourage you to take charge of your career and development journey. We invite you to explore exciting opportunities across our businesses. You'll find that our dynamic work environment provides variety and challenge. Your growth is key to our ongoing success-take the lead in shaping your career development, goals and future!


ย 

Job Summary:

Provide monitoring, oversight, and performance guidance on plant generating equipment, concentrating in performance related processes, identifying opportunities for process improvements thru performance monitoring, data analysis, and related operating & maintenance (O&M) functions to ensure safe, efficient, and environmentally compliant plant operation.

Essential Duties/Responsibilities:

  • Develop, implement, and oversee a program for monitoring thermal performance of power generating equipment.
  • Establish, update, and communicate on an established basis the key performance indicators (KPI's) for this program.
  • Assist the generating station in assessing and correcting equipment degradation that affects plant thermal performance.
  • Provide technical support, testing and equipment inspection expertise within various process areas to ensure safe, reliable, and efficient plant operation.
  • Assist in optimizing equipment operation to meet key program performance indicators
  • Assist in developing O&M and Capital budgets for maintaining/improving the thermal performance of process equipment.
  • Assist in developing strategic plans for equipment overhauls to optimize equipment life and time between overhauls.ย 
  • Implement performance monitoring software in conjunction with process instrumentation to assess and improve cycle/equipment performance.
  • Implement methodologies to quality check key process variables associated with the thermal performance monitoring program.
  • Conduct or procure training to support customer understanding of the performance monitoring programs.
  • Interface with engineering resources outside of the station to support/implement performance improvement initiatives.
  • Work effectively in a team environment as a leader, member and/or facilitator.
  • Perform other duties and assignments as required.

Working Conditions:

  • This position entails work in office and industrial settings.ย  ย 

Minimum Requirements

  • Bachelor's degree in Mechanical, Electrical, Thermodynamics, or Industrial Engineering (or a related discipline). May substitute 5-8 years of relevant experience in lieu of degree.ย 

Preferred Qualifications

  • Engineering or Technical Degree inclusive of college level Thermodynamics.
  • BS in Engineering with three years or more of experience in Power, Refinery or Chemical process facilities.
  • Knowledge/experience with thermal performance monitoring programs and methodology.

Additional Knowledge, Skills and Abilities

  • Proficiency in MS Word, Excel, PI Processbook
  • Strong interpersonal communication and collaboration skills with all levels of the organization
  • Basic understanding of Lock-out, Tag-out (LOTO) practices for related process equipment
    ย 

Physical Requirements (Demand and Frequency):

  • Must be able to wear required personal protection equipment (PPE) such as hard hats, safety glasses, goggles, face shields, hearing protection, respirators, fall protection harnesses, and other PPE as required.
  • Duties require extensive manual dexterity in usage of computer terminal and keyboard, while sitting for extended periods of time developing thermal models, process historian review, and other software as needed.
  • May be required to enter Permit Entry Confined Spaces
  • May be required to perform equipment inspections by climbing vertical ladders in excess of 20 feet and stairways in excess of 50 feet, using step stool, kneeling, bending, walking over uneven surfaces such as loose rock, open grating, up and down staircases.
  • May be required to prepare and conduct training, including mentoring individuals one-on-one. In conducting training, the specialist may be required to carry training materials, and to stand for extended periods of time.

The base salary range for this position is: $98,480 - $162,480* *The base salary range above represents the low and high end of the salary range for this position. Actual salaries will vary based on several factors including but not limited to location, experience, and performance. The range listed is just one component of the total compensation package for employees. Other rewards may include annual bonus, short- and long-term incentives, and program-specific awards. In addition the position may be eligible to participate in the benefits program which include, but are not limited to, medical, vision, dental, 401K, and flexible spending accounts.ย 

NRG Energy is committed to a drug and alcohol-free workplace. To the extent permitted by law and any applicable collective bargaining agreement, employees are subject to periodic random drug testing, and post-accident and reasonable suspicion drug and alcohol testing. EOE AA M/F/Protected Veteran Status/Disability. Level, Title and/or Salary may be adjusted based on the applicant's experience or skills.

EEO is the Law Poster (The poster can be found at http://www.eeoc.gov/employers/upload/poster_screen_reader_optimized.pdf)

Official description on file with Talent.


NRG logo

About NRG

Sourced by ZipRecruiter

At NRG, we're bringing the power of energy to people and organizations by putting customers at the center of everything we do. We generate electricity and provide energy solutions and natural gas to millions of customers through our diverse portfolio of retail brands. A Fortune 500 company, operating in the United States and Canada, NRG delivers innovative solutions while advocating for competitive energy markets and customer choice, working towards a sustainable energy future. More information is available at www.nrg.com. Connect with NRG on Facebook, LinkedIn and follow us on Twitter @nrgenergy.

Industry

Oil and coal products manufacturing

Company size

5,001 - 10,000 Employees

Headquarters location

Houston, TX, US