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Mainframe Computer Jobs in Chicago, IL (NOW HIRING)

blueStone

Database Administrator

Barrington, IL · On-site

... mainframe Operating Systems Good time/project management skills Good attention to detail Good problem solving skills Education and Experience Bachelors degree in Computer Science Additional ...

Allcon, Inc.

Infrastructure Architect

Chicago, IL · On-site

$68 - $87/hr

Bachelors degree or higher in IT, computer science, or other technical related field 10+ years of ... understanding of Mainframe, AS400, & Tandem Hands-on technical practitioner and individual ...

Collabera

SAS Programmer

Lake Bluff, IL

... PC and Mainframe applications. Interprets process, data modules, and business requirements into software code. Analyzes, designs, develops, implements and maintains moderate to complex computer ...

Allcon, Inc.

Infrastructure Architect

Chicago, IL · On-site

$68 - $87/hr

Bachelors degree or higher in IT, computer science, or other technical related field • 10+ years ... Mainframe, AS400, & Tandem • Hands-on technical practitioner and individual contributor • ...

AbbVie

AI Business Systems Analyst

North Chicago, IL · On-site

$65K/yr

... for mainframe reports, time lines, and graphics using advanced functions of a personal computer. Creates reports from existing client databases to satisfy user requests, development of ad-hoc ...

AbbVie

AI Business Systems Analyst

North Chicago, IL · On-site

Produces requirements for mainframe reports, time lines, and graphics using advanced functions of a personal computer. Creates reports from existing client databases to satisfy user requests ...

AbbVie

AI Business Systems Analyst

North Chicago, IL · On-site

Produces requirements for mainframe reports, time lines, and graphics using advanced functions of a personal computer. Creates reports from existing client databases to satisfy user requests ...

Ensono

Hardware Tech

Downers Grove, IL · On-site

Be knowledgeable with Mainframe installations and terminology. * Log, analyze and promptly take ... Be proficient in computer equipment specifications for power and cooling needs. * Have working ...

blueStone

IT Security Program Manager

Chicago, IL

... mainframe, mid-range, distributed system and network environments. Assists internal audit ... Serves as the enterprise focal point for computer security incident response planning, execution ...

Ensono

Hardware Tech

Downers Grove, IL · On-site

Knowledgeable with Mainframe installations and terminology. Log, analyze and promptly take steps to ... Must have proficient working knowledge of raised floor management, computer, and network ...

CNA

IT Rotational Associate

Chicago, IL · On-site

$47K - $78K/yr

Java (J2EE) VB / VB.NET Websphere XML VPN Oracle SQL Unix / AIX Business Intelligence Mainframe ... Education and Experience Bachelor's degree in Computer Science, Management Information Systems ...

United Airlines, Inc.

Manager - Quality

Chicago, IL · On-site

Bachelor's degree in Computer Science, Information technology or similar * 4+ years of Quality ... Understanding of cloud, distributed, microservice, mainframe and desk top based technology (AWS ...

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Mainframe Computer information

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How much do mainframe computer jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for mainframe computer 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 a mainframe computer?

A Mainframe Computer job typically involves working with large-scale, high-performance computing systems used by enterprises for critical applications such as banking, finance, and healthcare. Responsibilities may include system administration, application development, performance monitoring, and troubleshooting. Professionals in this field often work with mainframe operating systems like z/OS and programming languages such as COBOL, JCL, and REXX. This role requires strong analytical skills and knowledge of legacy systems, as mainframes continue to be integral to many industries.

What are the key skills and qualifications needed to thrive in the mainframe computer position?

To thrive as a Mainframe Computer Operator or Specialist, you need a solid understanding of mainframe hardware, operating systems (such as IBM z/OS), and data center best practices, alongside a degree in computer science or related experience. Familiarity with job scheduling tools (like JCL), monitoring utilities, and expertise in mainframe programming languages (such as COBOL) are commonly required, and certifications such as IBM Certified System Programmer are advantageous. Attention to detail, strong troubleshooting abilities, and excellent communication skills are essential for coordinating with IT teams and resolving system issues. These competencies ensure the reliability, security, and efficiency of mission-critical mainframe systems in large organizations.

What are some common challenges faced by mainframe professionals in day-to-day operations?

Mainframe professionals often face challenges such as managing complex batch job schedules, troubleshooting unexpected system outages, and ensuring data security while dealing with legacy applications. The work requires careful monitoring for performance bottlenecks and rapid response to issues, often during off-hours or on-call rotations. Collaboration with programming, network, and system administration teams is frequent, as mainframe environments are integral to business-critical services. Successfully handling these challenges helps maintain uptime and reliability for the organization’s core operations.

Is a mainframe computer a good career option?

A career as a mainframe computer professional involves maintaining and supporting large-scale enterprise systems, which are critical for industries like finance and government. It requires skills in mainframe operating systems, programming languages such as COBOL, and certifications like IBM Certified Systems Expert. The role offers stability and demand due to the continued reliance on mainframes for mission-critical applications.

Is a mainframe computer still in demand?

Mainframe computers remain in demand for large-scale enterprise applications, especially in banking, finance, and government sectors that require high reliability, security, and processing power. Skilled mainframe professionals with knowledge of COBOL, JCL, and mainframe environments are sought after to maintain and upgrade these systems.

What are jobs in mainframe computer?

Jobs in mainframe computers include roles such as mainframe programmers, system analysts, and operators who maintain, develop, and troubleshoot mainframe systems. These positions often require knowledge of languages like COBOL or PL/I, familiarity with mainframe operating systems such as z/OS, and certifications in mainframe technology. Mainframe professionals work in environments that demand high reliability and security, often following shift schedules to ensure continuous system operation.

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

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

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

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

Mainframe Computer jobs near you
Infographic showing various Mainframe Computer job openings in Chicago, IL as of August 2026, with employment types broken down into 1% As Needed, 83% Full Time, 13% Part Time, 2% Contract, and 1% Nights. Highlights an 78% Physical, 2% Hybrid, and 20% Remote job distribution, with an average salary of $114,373 per year, or $55 per hour.

Mail Processor ARJ/149

Bolingbrook, IL • On-site

AllRight Jobs Inc
Recruiting and Staffing Services • 11 - 50 employees
Learn more about AllRight Jobs Incexternal

$18/hr

Contractor

Re-posted 7 days ago

Job description

Job Summary
- Assemble and install hardware components in copier and printer mainframes according to customer specifications
- Test assembled units using standardized checklists and QA processes to ensure proper functionality
- Stage and prepare completed units for shipment
- Utilize basic computer skills for setup and documentation
- Use mechanical tools such as screwdrivers and nut drivers
- Handle units ranging from small printers up to 50 lbs.; team lifting required for heavier items
- Perform repetitive assembly tasks while maintaining safety standards
- Work collaboratively in a team-based environment
- Occasionally lift and move equipment (up to 75 lbs.), and push/pull wheeled items (up to 700 lbs.)
- Frequently perform physical tasks such as standing, walking, stooping, bending, squatting, and kneeling
- Maintain professional conduct in all company and customer interactions
- Follow written instructions and meet deadlines
- Work primarily in a warehouse environment with exposure to minor physical risks (cuts, burns, chemical solvents)
- May be required to work overtime as needed
- Free parking provided
- Temp-to-hire schedule: Mon-Fri, 8:00 AM – 4:30 PM, $18.00/hr, no driving required, smart casual dress code