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Mainframe Developer Jobs in Naperville, IL (NOW HIRING)

krg technology inc

Mainframe CICS and MQ

Chicago, IL · On-site

$50.50 - $65/hr

... collaborate with application developers on application design. ? Support for application ... Additional Information Strong experience in Mainframe CICS and MQ

DSNSearch

CICS/MQ Systems Programmer

Chicago, IL · Remote

$56.75 - $72/hr

CICS /MQ MAINFRAME SYSTEMS PROGRAMMER CICS ~~ MQ ~~ Z/OS MAINFRAME SYSTEMS ~~ SMP/E ~~ JES 2 ~~ CICSPLEX ~~ INFRASTRUCTURE REMOTE !!~~ REMOTE!! ~~~~FULL TIME WITH BENEFITS/ANNUAL BONUS OPPORTUNITY~

krg technology inc

Mainframe SDM Delivery

Chicago, IL · On-site

Knowledge in at least two additional areas of technical disciplines is a strong plus: mainframe security, system programming, parallel sysplex, network, storage, High Availability, Performance and ...

Capgemini

Mainframe Modernization Lead

Chicago, IL · On-site

$98K - $233K/yr

Bachelor's degree in Business, Computer Engineering, or related field (advanced degree preferred ... ai etc.) to modernize mainframe infrastructure and applications * 15+ years in Application ...

Amaze Systems Inc.

Senior Developer

Naperville, IL · On-site

$54.50 - $72/hr

Technical Skills (APPS)-Mainframe-Language-Mainframe - COBOL Job : Technical Lead Other Requirement ... Developer Mandatory Skills Mainframe Cobol (Primary) JCL CICS VSAM Unix Shell scripting is ...

United Airlines

Cobol Developer

Chicago, IL

$90K - $118K/yr

Analyze and process mainframe flat files and COBOL copybooks, including complex redefined ... engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data ...

Capgemini

Cobol Developer

Chicago, IL · On-site

$90K - $118K/yr

Analyze and process mainframe flat files and COBOL copybooks, including complex redefined ... engineering, all fueled by its market leading capabilities in AI, generative AI, cloud and data ...

Capgemini

Cobol Developer

Chicago, IL · On-site

$90K - $118K/yr

Dearborn, MI Job SummaryWe are seeking an experienced Mainframe/COBOL Developer to support a critical legacy insurance platform (CPS) and assist with data preparation activities for migration to ...

Noblesoft Technologies

zOS Technical Developer

Lisle, IL · On-site

$45 - $52/hr

Role - zOS Technical Developer Location -Lisle, Illinois (Onsite, no remote) JD: * 5-8+ years of experience in mainframe development. * Strong proficiency in COBOL, JCL, CICS, VSAM, DB2, IMS, REXX.

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Mainframe Developer information

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How much do mainframe developer jobs pay per hour?

As of Sep 11, 2026, the average hourly pay for mainframe developer in Naperville, IL is $53.30, according to ZipRecruiter salary data. Most workers in this role earn between $47.07 and $60.48 per hour, depending on experience, location, and employer.

What is a mainframe developer?

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?

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.

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 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.

Is a mainframe developer a good career?

A mainframe developer is a specialized IT professional who maintains and develops applications on mainframe systems, which are used by large organizations for critical data processing. The role offers stable employment, competitive salaries, and opportunities to work with legacy technologies like COBOL and JCL, but it may require ongoing learning of evolving mainframe tools and certifications. Overall, it can be a good career for those interested in enterprise computing and system stability.

Is a mainframe developer hard to learn?

Mainframe developers typically need to learn specialized programming languages like COBOL and understand mainframe environments, which can have a steep learning curve for beginners. However, with prior programming experience and training, acquiring the necessary skills is achievable, and many employers offer on-the-job training or certification programs.

Is mainframe developer still in demand?

Mainframe developers are still in demand in industries such as finance, insurance, and government, where legacy systems remain critical. They typically work with COBOL, JCL, and mainframe environments, and demand depends on the organization's reliance on mainframe technology and ongoing maintenance needs.

What are the most commonly searched types of Mainframe Developer jobs in Naperville, IL?

The most popular types of Mainframe Developer jobs in Naperville, IL are:

What are popular job titles related to Mainframe Developer jobs in Naperville, IL?

For Mainframe Developer jobs in Naperville, IL, the most frequently searched job titles are:

What job categories do people searching Mainframe Developer jobs in Naperville, IL look for?

The top searched job categories for Mainframe Developer jobs in Naperville, IL are:

What cities near Naperville, IL are hiring for Mainframe Developer jobs?

Cities near Naperville, IL with the most Mainframe Developer job openings:

Mainframe Developer jobs near you
Infographic showing various Mainframe Developer job openings in Naperville, IL as of September 2026, with employment types broken down into 41% Full Time, and 59% Contract. Highlights an 100% In-person job distribution, with an average salary of $110,861 per year, or $53.3 per hour.

Mainframe CICS and MQ

Chicago, IL • On-site

krg technology inc
IT Services • 201 - 500 employees
Learn more about krg technology incexternal

$50.50 - $65/hr

Contractor

Re-posted 13 days ago

Job description

Company Description

Sevagan

KRG Technologies Inc

Sevagan at krgtech.com

661-367-8000 EXT 513

Job Description

Functional experience is required with the following technologies:

Drive architecture roadmap, reference architecture and standard efforts. Provide leadership in all technical aspects of assigned projects, programs and portfolios

Architect complex end-to-end solutions across distributed, host and business intelligence environments

? Responsible for CICS and MQ product sets on zSeries platforms including: Installation, maintenance, and administration of MQ and CICS software. Manage deployments of maintenance releases, red-alerts, and emergency maintenance.

? Conduct software proof of concept and product evaluations. Serve as Point of Contact for Vendor relationships and engagement.

? Maintain standards and best practices documentation. Support for highly available, sysplexed MQ and CICS environments on zSeries.

? Experience with implementing, and supporting MQ shared queues and MQ cluster configurations. Experience with CICS advanced features and functionality (CPSM, LOGR, Web Services, SSL) and ability to collaborate with application developers on application design.

? Support for application development and testing, and for the analysis and resolution of problems with the MQ and CICS product sets, in both production and non-production environments Design and develop exits and other facilities to enhance MQ infrastructure (requires MQI and C or Assembler coding experience) Performance analysis and tuning skills

support infrastructure for the MQ and CICS product set, including Automation, Change Collaborate with the CICS Production Support team on problem and incident management, disaster recovery, sustained resiliency, LOB testing events, and capacity planning requirements as needed.

Additional Information

Strong experience in Mainframe CICS and MQ

KRG Technologies logo

About KRG Technologies

Sourced by ZipRecruiter

KRG Technologies was founded with a simple motive of offering the clients exactly what they want, how they want and when they want. By leveraging for its clients its technological edge and right-sourcing advantage, KRG in a short period of time has grown to become one of the most trusted strategic technology partners. Treating every client as the top priority, we customize our solutions and services to align with the unique needs of each client. Headquartered in Valencia, California, KRG employs a unique global delivery platform to minister its offerings spanning from application development and maintenance to business process reengineering. With years of hands-on domain experience and international presence, we offer state-of-the-art solutions backed by our follow-the-sun service model in the most cost effective manner. We value our clientele for the trust reposed in us and our clientele admire us for our personalized approach and deep commitment to their success. Our biggest strength lies in technical expertise of our team and individual competency of our employees, which enables us to be the most befitting solution provider.

Industry

It services

Company size

201 - 500 Employees

Headquarters location

Valencia, CA, US

Year founded

2003

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