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Mainframe Developer Jobs in Peoria, IL (NOW HIRING)

Intellectt INC

Sr.MBD Emb Software Engineer

Peoria, IL · On-site

$120K - $158K/yr

MBD Emb Software Engineer position based in Peoria, IL with one of our prestigious clients. If you are interested or know someone who might be a good fit, please share your updated resume at mahaboob ...

Pentangle Tech

sil engineer1

Mossville, IL · On-site

SIL engineer Location: Mossville, IL Duration: Long Term Client: CAT This role requires full onsite work during the 2nd shift from 12 PM to 10 PM, four days a week 2nd shift, onsite role Join a ...

RLI Corp.

Senior .NET Software Engineer

Peoria, IL · Hybrid

$101K - $144K/yr

Mentors and develops software engineer team. * Coordinates with internal contacts to perform specific project tasks or resolve technical issues. * Seeks out and utilizes new technology solutions and ...

All JobsMainframe Developer JobsMainframe Developer Jobs in Peoria, IL

Mainframe Developer information

See Peoria, IL salary details

$9

$52

$70

How much do mainframe developer jobs pay per hour?

As of Jul 30, 2026, the average hourly pay for mainframe developer in Peoria, IL is $52.37, according to ZipRecruiter salary data. Most workers in this role earn between $46.25 and $59.42 per hour, depending on experience, location, and employer.

What is the difference between Mainframe Developer vs Mainframe Analyst?

AspectMainframe DeveloperMainframe Analyst
Primary RoleDesigning, coding, and testing mainframe applicationsAnalyzing and maintaining existing mainframe systems
Skills & CertificationsCOBOL, JCL, DB2, certifications like IBM Certified DeveloperCOBOL, JCL, system analysis, troubleshooting skills
Work EnvironmentDevelopment teams, coding in mainframe environmentsSupport teams, system analysis, user support
Industry UsageFinancial services, insurance, government agenciesFinancial institutions, healthcare, government agencies

While Mainframe Developers focus on creating and implementing mainframe applications, Mainframe Analysts primarily analyze, troubleshoot, and maintain existing systems. Both roles require similar technical skills and often work within the same industries, but their core responsibilities differ in development versus support and analysis.

What are some common challenges Mainframe Developers face when integrating legacy systems with modern applications?

Mainframe Developers often encounter challenges such as ensuring compatibility between legacy systems and newer technologies, managing data migration without disrupting business operations, and maintaining the security of sensitive data. Effective communication with cross-functional teams, such as application developers and infrastructure engineers, is essential to address these challenges. Staying updated on both mainframe and modern programming practices helps ease integration and ensures long-term system reliability.

What are Mainframe Developers?

Mainframe Developers are specialized software engineers who design, develop, maintain, and troubleshoot applications on mainframe computer systems, such as IBM's z/OS. They typically work with languages like COBOL, JCL, and CICS, and are responsible for ensuring the performance, security, and reliability of mission-critical business applications. Mainframe Developers are commonly employed in industries like banking, insurance, and government, where large-scale, high-volume transaction processing is essential.

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

To thrive as a Mainframe Developer, you need expertise in programming languages such as COBOL, JCL, and SQL, along with a strong understanding of mainframe operating systems and batch processing concepts. Familiarity with tools like IBM z/OS, DB2, CICS, and version control systems is typically required, and certifications from IBM or related organizations can be beneficial. Strong problem-solving abilities, attention to detail, and effective communication skills help Mainframe Developers excel in troubleshooting and collaborating with cross-functional teams. These skills are crucial for maintaining, optimizing, and modernizing legacy systems that are vital to many large organizations’ operations.
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What job categories do people searching Mainframe Developer jobs in Peoria, IL look for? The top searched job categories for Mainframe Developer jobs in Peoria, IL are:
What cities near Peoria, IL are hiring for Mainframe Developer jobs? Cities near Peoria, IL with the most Mainframe Developer job openings:
Mainframe Developer jobs near you
Infographic showing various Mainframe Developer job openings in Peoria, IL as of July 2026, with employment types broken down into 75% Full Time, and 25% Part Time. Highlights an 75% In-person, and 25% Remote job distribution, with an average salary of $108,937 per year, or $52.4 per hour.

Test Manufacturing Engineer Technician - Peoria, Illinois

ITC, Inc.

Peoria, IL

Full-time

Re-posted 10 days ago

Job description

Our large manufacturing client located in Peoria, Illinois, is looking for a Test Manufacturing Engineer Technician to add to their team.

JOB DESCRIPTION

Provide support to the Test Manufacturing Engineers, with daily production tasks, within the LPSD transmission assembly facility. The job responsibilities may include working with product engineering groups, test equipment vendors and manufacturing associates that enable test processes consistent with lean manufacturing principles for transmission and torque converter products. The test engineer technician will strive to continuously assist with reducing test cycle times while maintaining the quality and integrity of existing test processes. The test engineer technician bulk of workload will be to develop and improve standard work, safety risk assessments, and work element sheets for the test stands. Suitable candidates would possess at least 2 years of relevant engineering experience in the areas of test / development, product design or transmission / engine controls.

REQUIREMENTS:

  • Minimum Bachelor's degree in mechanical, electrical, or manufacturing engineering.
  • Previous experience in assembly or test operations environment.
  • Knowledge of transmission function and hydraulic and electro-hydraulic controls systems.
  • Data analysis and logical decision making.
  • PC and mainframe system computer skills including Microsoft software applications
  • Strong Interpersonal skills including teamwork, judgment, initiative, dedication, communication
  • Strong organizational and planning skills.
  • Familiar with 6 Sigma methalogy

Candidates must be authorized to work in the United States.

This employer is not currently hiring foreign national applicants that require or will require sponsorship tied to a specific employer.

Apply