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Mainframe System Programmer Jobs in Chicago, IL (NOW HIRING)

Ensono

Mainframe Security Engineer

Downers Grove, IL · On-site

Employee The primary role of the Mainframe System Security Engineer is to create, modify and maintain security access on internal and external userids and security rules access for mainframe systems.

Deloitte

Senior Mainframe Developer

Chicago, IL · Hybrid

Develop, test, and deploy code changes for claims processing systems based on technical ... As an experienced Mainframe Developer , you will have the ability to share new ideas and ...

Accenture

Mainframe Specialist

Chicago, IL

$70K - $196K/yr

Evaluate legacy systems and propose actionable modernization strategies-covering rehosting ... Partner with cross-functional teams-architects, developers, QA, and business analysts-to gather ...

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 ...

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How much do mainframe system programmer jobs pay per hour?

As of Aug 4, 2026, the average hourly pay for mainframe system programmer in Chicago, IL is $59.93, according to ZipRecruiter salary data. Most workers in this role earn between $54.47 and $69.33 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a mainframe system programmer?

To thrive as a Mainframe System Programmer, you need deep knowledge of mainframe operating systems (such as z/OS), programming languages like COBOL or Assembler, and a degree in computer science or a related field. Familiarity with mainframe tools (e.g., IBM ISPF, JCL, SMP/E) and certifications such as IBM Certified System Programmer are typically required. Analytical thinking, problem-solving, and effective communication are crucial soft skills for diagnosing issues and collaborating with IT teams. These skills are vital to ensure the stability, security, and efficiency of critical enterprise computing environments.

What are some common challenges mainframe system programmers face when supporting legacy systems?

Mainframe System Programmers often encounter challenges such as integrating modern applications with legacy mainframe environments, ensuring system security while maintaining uptime, and troubleshooting complex issues that span both old and new technologies. They may also face difficulties due to limited documentation or retiring expertise as experienced colleagues leave the workforce. Staying current with evolving mainframe tools and best practices helps address these challenges and keeps systems running smoothly.

What is the difference between Mainframe System Programmer vs Mainframe Application Developer?

AspectMainframe System ProgrammerMainframe Application Developer
Required CredentialsCertifications in mainframe systems, such as IBM Certified System ProgrammerProgramming certifications, often in COBOL, Java, or other languages
Work EnvironmentOperate primarily on mainframe hardware, focus on system setup and maintenanceDevelop and modify applications running on mainframes
Employer & Industry UsageUsed by organizations with large-scale legacy systems, banking, insuranceDevelops business applications for mainframe environments in similar industries

While both roles work within mainframe environments, Mainframe System Programmers focus on system setup, maintenance, and optimization, whereas Mainframe Application Developers concentrate on creating and updating applications that run on mainframes. Understanding these differences helps in choosing the right career path or job search focus.

What is a mainframe system programmer?

Mainframe system programmers are IT professionals who specialize in installing, configuring, maintaining, and optimizing mainframe computer systems. They are responsible for the underlying software infrastructure, such as operating systems (like IBM z/OS), network configurations, and middleware. Their work ensures that mainframe environments run efficiently, securely, and with minimal downtime, supporting critical applications for large organizations. System programmers also troubleshoot complex issues and implement updates or enhancements as needed.
What are popular job titles related to Mainframe System Programmer jobs in Chicago, IL? For Mainframe System Programmer jobs in Chicago, IL, the most frequently searched job titles are:
What job categories do people searching Mainframe System Programmer jobs in Chicago, IL look for? The top searched job categories for Mainframe System Programmer jobs in Chicago, IL are:
Mainframe System Programmer jobs near you
Infographic showing various Mainframe System Programmer job openings in Chicago, IL as of July 2026, with employment types broken down into 10% Locum Tenens, 77% Full Time, 4% Part Time, 8% Contract, and 1% Summer. Highlights an 84% Physical, 5% Hybrid, and 11% Remote job distribution, with an average salary of $124,654 per year, or $59.9 per hour.

Mainframe IMS System Programmer / NJ / NC / TX / FL / VA / IL(Hybrid - 3 days onsite)

Komplete Teleservices

Chicago, IL • On-site

$56.75 - $72.25/hr

Other

Posted 19 days ago

Job description

Mainframe IMS System Programmer
We are seeking a highly skilled Mainframe IMS System Programmer to support and manage IBM z/OS
IMS environments. The role is responsible for ensuring the stability, availability, performance, and security
of IMS DB and IMS TM subsystems in a mission-critical banking or financial services environment.
Install, configure, and maintain IMS DB and IMS TM subsystems on IBM z/OS
Perform version upgrades, maintenance, and patching to ensure system currency and stability
Manage and maintain IMS system definitions, including DBDs, PSBs, ACB libraries, and control
regions
Configure and tune buffer pools, parameters, and system resources to optimize performance
Monitor IMS database and transaction performance, proactively identifying and resolving
performance bottlenecks
Troubleshoot and resolve system issues by analyzing logs, dumps, abends, and database errors
Support IMS utilities, backup/recovery processes, and disaster recovery testing
Ensure seamless integration with z/OS, DB2, MQ, CICS, TCP/IP, and Sysplex environments
Implement and follow ITIL/ServiceNow change management processes for all system updates
Maintain accurate technical documentation and system configurations
Required Qualifications:

7+ years of experience with IBM z/OS operating system
Hands-on experience with IMS DB and IMS TM administration
Deep knowledge of:
o DBD/PSB/ACB management
o IMS control regions and transaction processing
o Buffer pool tuning and performance optimization
Experience with IMS utilities, backup/recovery, and DR strategies
Strong troubleshooting skills (dump analysis, log analysis, abend resolution)
Experience integrating IMS with:
o DB2, CICS, MQ, and distributed systems
Familiarity with RACF security controls for IMS environments
Experience with SMP/E, JCL, TSO/ISPF, SDSF
Understanding of Sysplex and high availability architectures
Preferred Experience:
Exposure to IMS modernization or API enablement (z/OS Connect, REST integration)
Experience with monitoring tools (e.g., OMEGAMON, MainView, RMF)
Knowledge of automation tools (REXX, Ansible, z/OSMF workflows)
Experience with DB  control, TCPIP, ZOS Connect, Assembler routines.
Skill and experience with IMS Routines & Exit Routines will be a big plus.

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