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Mainframe Administration Jobs in Chicago, IL (NOW HIRING)

US Bank

z/OS Systems Engineer

Chicago, IL · On-site

Hands-on experience supporting critical mainframe subsystems including CICS, IMS, JES2, IBM MQ, and Db2 for z/OS . * Advanced knowledge of RACF security administration , access controls, and ...

Kyndryl

Mainframe z/VM & Linux

Chicago, IL · On-site

The Role We are seeking an experienced Mainframe z/VM & Linux Engineer to support IBM Z ... Responsibilities include: z/VM Administration: * Install, configure, and maintain IBM z/VM systems

Capgemini

Cobol Developer

Chicago, IL · On-site

$90K - $118K/yr

Analyze and process mainframe flat files and COBOL copybooks, including complex redefined ... Insurance domain experience (Claims and Policy Administration systems preferred). * Experience ...

New

United Airlines

Cobol Developer

Chicago, IL · On-site

$90K - $118K/yr

Analyze and process mainframe flat files and COBOL copybooks, including complex redefined ... Insurance domain experience (Claims and Policy Administration systems preferred). * Experience ...

New

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All JobsMainframe Administration JobsMainframe Administration Jobs in Chicago, IL

Mainframe Administration information

See Chicago, IL salary details

$10

$54

$74

How much do mainframe administration jobs pay per hour?

As of Aug 21, 2026, the average hourly pay for mainframe administration in Chicago, IL is $54.99, according to ZipRecruiter salary data. Most workers in this role earn between $48.56 and $62.40 per hour, depending on experience, location, and employer.

What is mainframe administration?

Mainframe Administration involves managing and maintaining mainframe computer systems, which are powerful servers used by large organizations for critical applications and bulk data processing. Mainframe Administrators are responsible for installing, configuring, monitoring, and securing mainframe hardware and software. They ensure system performance, troubleshoot technical issues, handle backup and recovery, and apply updates or patches to keep systems running smoothly and securely. This role often requires strong technical skills, attention to detail, and the ability to work with legacy systems.

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

To thrive as a Mainframe Administrator, you need a solid understanding of mainframe operating systems (such as z/OS), system configuration, and troubleshooting, typically supported by a degree in computer science or related IT experience. Familiarity with tools like IBM System Automation, JCL, RACF, and monitoring solutions, as well as certifications such as IBM Certified System Administrator, is highly valued. Strong analytical thinking, attention to detail, and effective communication skills help administrators efficiently resolve issues and collaborate with IT teams. These skills and qualifications are essential to ensure the reliability, security, and optimal performance of critical enterprise computing environments.

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

Mainframe Administrators often encounter challenges such as managing legacy systems, ensuring system uptime, and balancing security with accessibility. Keeping up with evolving technologies and integrating mainframes with modern applications can require continuous learning and adaptation. Effective communication with development and operations teams is vital to ensure seamless updates and minimize downtime. Proactively monitoring system performance and applying best practices for disaster recovery can also help mitigate risks and maintain reliability.

What is the difference between Mainframe Administration vs Mainframe Support?

AspectMainframe AdministrationMainframe Support
CertificationsIBM Certified System Administrator, z/OS certificationsSimilar certifications, often including z/OS support certifications
Work EnvironmentData centers, enterprise IT departments managing mainframe systemsHelp desks, support teams assisting users and troubleshooting issues
ResponsibilitiesSystem setup, configuration, maintenance, performance tuningIssue resolution, user support, incident management
Industry UsageFinancial institutions, government agencies, large corporationsSame industries, focusing on user support and problem resolution

Mainframe Administration involves managing and maintaining mainframe systems, ensuring optimal performance and security. Mainframe Support focuses on assisting users, troubleshooting issues, and resolving incidents. Both roles require similar certifications and are vital in industries relying on mainframe technology, but they differ in daily responsibilities and focus areas.

Is it hard to become a mainframe administrator?

Becoming a mainframe administrator requires a strong understanding of mainframe systems like IBM z/OS, proficiency in scripting and automation, and often a relevant certification. The role can be technically challenging due to the complexity of mainframe environments, but with proper training and experience, it is achievable for those with a background in IT or computer science.

Is mainframe administration a good career option?

Mainframe administration is a stable and well-paying career that involves managing large-scale computer systems used by many organizations. It requires knowledge of mainframe operating systems like z/OS, skills in system maintenance, and often certifications such as IBM Certified System Administrator. The role offers opportunities for specialization and long-term job security due to the continued reliance on mainframes in industries like finance and government.

What does a mainframe administrator do?

A mainframe administrator manages and maintains large-scale computer systems known as mainframes, ensuring their security, performance, and availability. They configure hardware and software, monitor system operations, troubleshoot issues, and implement updates, often using tools like z/OS and requiring knowledge of system security and backup procedures.

What are popular job titles related to Mainframe Administration jobs in Chicago, IL?

For Mainframe Administration jobs in Chicago, IL, the most frequently searched job titles are:

What job categories do people searching Mainframe Administration jobs in Chicago, IL look for?

The top searched job categories for Mainframe Administration jobs in Chicago, IL are:

Mainframe Administration jobs near you
Infographic showing various Mainframe Administration job openings in Chicago, IL as of August 2026, with employment types broken down into 1% As Needed, 85% Full Time, 11% Part Time, and 3% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution, with an average salary of $114,373 per year, or $55 per hour.

Mainframe network Admin

krg technology inc

Chicago, IL

Contractor

Re-posted 23 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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