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Mainframe System Administrator Jobs in Illinois (NOW HIRING)

Kyndryl

Mainframe z/VM & Linux

Chicago, IL

The Role We are seeking an experienced Mainframe z/VM & Linux Engineer to support IBM Z ... Administer z/VM components such as: * DirMaint * VMSES/E * RACF for z/VM security * Apply system ...

Staffingine LLC

Tandem Developer

Rolling Meadows, IL · On-site

$49.25 - $63.25/hr

Strong experience with Tandem HP NonStop systems and tools * Proficiency in Tandem programming ... CICS,JCL,Mainframe Enterprise Cobol,Mainframe DB2,Z/OS,CICS Admin,Mainframe - COBOL/JCL/CICS ...

blueStone

Database Administrator

Barrington, IL

Primary Purpose The Database Administrator designs, administers and maintains enterprise database ... mainframe Operating Systems Good time/project management skills Good attention to detail Good ...

Huntington

RACF Mainframe Security Engineer

Chicago, IL · On-site +1

$70K - $140K/yr

... associated systems. * Responsible for developing and maintaining cyber security solutions ... Professional experience working as a RACF Administrator * Experience in production support and ...

Huntington

RACF Mainframe Security Engineer

Chicago, IL · On-site +1

$70K - $140K/yr

... associated systems. * Responsible for developing and maintaining cyber security solutions ... Professional experience working as a RACF Administrator * Experience in production support and ...

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Mainframe System Administrator information

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$49

$65

How much do mainframe system administrator jobs pay per hour?

As of Aug 31, 2026, the average hourly pay for mainframe system administrator in Illinois is $49.55, according to ZipRecruiter salary data. Most workers in this role earn between $45.19 and $62.40 per hour, depending on experience, location, and employer.

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

To thrive as a Mainframe System Administrator, you need expertise in mainframe operating systems (such as z/OS), system troubleshooting, performance tuning, and typically a degree in computer science or related field. Familiarity with tools like IBM z/OS, JCL, RACF, SDSF, and mainframe automation software, as well as relevant certifications (e.g., IBM Certified System Administrator), is commonly required. Strong analytical thinking, attention to detail, and effective communication skills help navigate complex environments and coordinate with teams. These skills ensure reliable system uptime, rapid issue resolution, and secure, efficient operations critical to enterprise business continuity.

What are some common challenges faced by mainframe system administrators and how can they be managed?

Mainframe System Administrators often face challenges such as maintaining system uptime, managing legacy systems alongside new technologies, and ensuring security compliance. These tasks require proactive monitoring, thorough documentation, and continuous learning to keep up with software updates and security patches. Collaborating closely with development and network teams is essential to quickly resolve issues and implement improvements. Building strong troubleshooting skills and staying updated with mainframe advancements can help administrators effectively manage these challenges.

What is the difference between Mainframe System Administrator vs Network Administrator?

AspectMainframe System AdministratorNetwork Administrator
CertificationsIBM Certified System Administrator, Linux certificationsCompTIA Network+, Cisco CCNA
Work EnvironmentMainframe data centers, large enterprise ITCorporate offices, data centers, network operation centers
Industry UsageBanking, finance, governmentTelecommunications, IT services, corporate networks
Job FocusMaintaining mainframe hardware/software, ensuring system availabilityManaging network infrastructure, troubleshooting connectivity issues

The Mainframe System Administrator and Network Administrator roles share some certifications and work environments but differ in their primary focus. Mainframe System Administrators specialize in maintaining large-scale mainframe systems crucial for enterprise operations, while Network Administrators focus on managing and troubleshooting network infrastructure. Both roles are vital in enterprise IT but serve distinct functions within organizations.

What does a mainframe system administrator do?

A mainframe system administrator manages and maintains large-scale computer systems used by organizations for critical applications. They install, configure, monitor, and troubleshoot mainframe hardware and software, ensuring system security, performance, and availability. Proficiency in mainframe operating systems like z/OS and knowledge of automation tools are essential for the role.

What are popular job titles related to Mainframe System Administrator jobs in Illinois?

For Mainframe System Administrator jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching Mainframe System Administrator jobs in Illinois look for?

The top searched job categories for Mainframe System Administrator jobs in Illinois are:

Mainframe System Administrator jobs near you
Infographic showing various Mainframe System Administrator job openings in Illinois as of August 2026, with employment types broken down into 1% As Needed, 87% Full Time, 10% Part Time, and 2% Contract. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution, with an average salary of $103,062 per year, or $49.5 per hour.

Mainframe network Admin

Chicago, IL

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

Contractor

Re-posted 2 days ago

Job description

Company Description

Vignesh Chandran

KRG Technologies Inc 

661-367-8000 EXT 405

Job Description

Configuration and administration of IBM z/OS mainframe network software.

Configuration and administration of network related 3rd party system software.

Provision of technical support for Mainframe Networking issues during the normal working day and out of hours on call support.

Act as a Mainframe Networking resource for internal and external projects.

Monitor the performance of mainframe networking components and instigate remedial action.

Production of clear technical documentation as appropriate

Compliance with all local, regional, global and regulatory policies, processes and procedures.

Requirements:

Experienced technician with basic skills in most and more advanced skills in some of the following:

TCP/IP and associated products/protocols

SNA, VTAM, APPN/Enterprise Extender

Connect Direct and other file transfer products

Session Management products eg. TPX, Teleview, CL/Supersession

Network Management products eg. NETVIEW, Netmaster/TCPIP

Print server products eg. VPS

Must be a self-starter, but also a completer/finisher who ensures that tasks/projects are fully completed with the necessary updates to documentation.

Well organized and able to keep a number of activities in progress in parallel, balancing priorities as necessary, in particular between support and project work.

Ability to communicate clearly at all levels while working either individually or as a team player is essential.

Additional Information

All your information will be kept confidential according to EEO guidelines.

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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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