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Computer Operator Mainframe Jobs in Chicago, IL (NOW HIRING)

Inspector Aircraft Reliability

Bellwood, IL · On-site

$18.20 - $26.67/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Move and handle discrepant material in accordance with aircraft operating procedures. * Input necessary data into the mainframe computer and personal computer. * Clean and degrease components prior ...

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 ...

Inventory Control Clerk - A

North Chicago, IL · On-site

$15 - $20/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

Ability to work with complex computer applications and resource materials. * Ability to use multiple operating environments including Windows, DOS, and Mainframe. * Proven skills in PC software ...

Showing results 21-27

Computer Operator Mainframe information

See Chicago, IL salary details

$14

$25

$38

How much do computer operator mainframe jobs pay per hour?

As of Aug 20, 2026, the average hourly pay for computer operator mainframe in Chicago, IL is $25.11, according to ZipRecruiter salary data. Most workers in this role earn between $19.57 and $28.22 per hour, depending on experience, location, and employer.

What is a computer operator mainframe?

A Computer Operator Mainframe is responsible for monitoring, managing, and troubleshooting mainframe computer systems. They ensure that batch jobs run correctly, system backups are performed, and any errors or failures are addressed promptly. Operators use specialized software and tools to oversee system performance and maintain uptime. This role often requires working in shifts to provide 24/7 operational support. Strong attention to detail and problem-solving skills are essential in this position.

What does a computer operator mainframe do?

A typical shift for a Computer Operator Mainframe involves monitoring mainframe systems, running scheduled and ad-hoc jobs, and troubleshooting any system alerts or errors that occur during operations. Operators are responsible for ensuring jobs are completed successfully, performing regular system health checks, and escalating issues to system administrators or other technical teams if needed. The work environment is usually structured in shifts to provide 24/7 coverage, with operators collaborating closely with both technical and business teams to ensure critical applications remain available. You can expect a mix of routine monitoring, responding to incidents, and documenting system activity, which makes attention to detail and clear communication especially important for success in this role.

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

To thrive as a Computer Operator Mainframe, you need a solid understanding of mainframe operations, batch processing, job scheduling, and system monitoring, often supported by a degree in computer science or a related field. Familiarity with operating systems like IBM z/OS, tools such as JCL, TSO/ISPF, and knowledge of automation software or mainframe consoles is essential. Strong attention to detail, problem-solving ability, and effective communication skills help operators stand out in this role. These skills ensure smooth system operations, quick resolution of technical issues, and clear collaboration with IT teams, minimizing downtime and maintaining high system reliability.

What are the most commonly searched types of Computer Operator Mainframe jobs in Chicago, IL?

The most popular types of Computer Operator Mainframe jobs in Chicago, IL are:

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

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

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

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

Infographic showing various Computer Operator Mainframe 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 $52,232 per year, or $25.1 per hour.

Senior Administrator, Procurement

Chicago Transit Authority

Chicago, IL • On-site

$95K/yr

Full-time

Posted 19 days ago


Chicago Transit Authority rating

7.1

Company rating: 7.1 out of 10

Based on 36 frontline employees who took The Breakroom Quiz

647th of 848 rated public administrative organizations


Job description

SALARY

$95,038.17

POSITION SUMMARY

Under general supervision, handles all purchasing and related contract administration activities within the area of the department procuring the goods and services necessary for the daily operations of the Authority, such as professional services, technology and special projects as required.

PRIMARY RESPONSIBILITIES

           Acts as main point of contact with contractors while handling complex and/or multimillion dollar procurements. 

o          Prepares bid proposals (including Invitations for Bids, Requests for Proposals, and Letters of Interest and Qualifications).

o          Reviews contractor responses and uses comparative data to perform analysis of cost effectiveness.

o          Negotiates contracts and change orders.

o          Prepares recommendations for contract awards, change orders, amendments, ordinances, etc. in accordance with all applicable laws and Authority regulations.

           Performs preliminary administrative functions in preparation of procurement negotiations.

o          Reviews contract specifications.

o          Reviews contract special conditions and other contract language, and where necessary revises language to prepare solicitation packages.

o          Conducts pre-bid and pre-award meetings.

o          Determines responsiveness and responsibility of bidders.

o          Coordinates contractual approvals with responsible departments.

           Analyzes purchase requisitions to determine proper procurement method and determines the accuracy and quality of the description of goods and services.

           Generates correspondence concerning substitutions or changes in the delivery of materials or services.

           Researches marketplace to identify new products, technologies, and services required by the Authority to support new and ongoing projects.  Reports to management and user departments on new developments that are applicable to Authority.

           Meets with vendors, visits vendor facilities, and maintains a file of current product catalogs and price schedules.

           Prepares requests for concurrence and approval from funding on procurements as necessary.

           Chairs evaluation, selection, and negotiation committees to obtain professional consulting services as directed.

           Performs related duties as assigned.

MANAGEMENT RESPONSIBILITIES

Reporting to this position may include the following jobs:

Job Title

           None

CHALLENGES

           Ensuring all procurement activities are completed expeditiously and in accordance with all applicable laws and regulations.

EDUCATION/EXPERIENCE REQUIREMENTS

           Bachelor's degree in Business Administration or like field of study, plus five (5) years of experience in procurement and/or purchasing, or an equivalent combination of education and experience.

           Experience with Technology, Security, Human Resources and Professional Services contracts preferred.

PHYSICAL REQUIREMENTS

           Requires remaining in a stationary position for extended periods of time and constantly operating a computer and other office productivity machinery.

           Service Area Requirement: Exempt (Non-Union) employees must live within the boundaries of the CTA Statutory Service Area either at the time of employment or within 6 months of beginning employment at CTA.

KNOWLEDGE, SKILLS, AND ABILITIES

           Working knowledge of the Microsoft Office Suite and the applications of these products in support of Purchasing activities.

           Working knowledge of Federal, State, and Local procurement regulations and guidelines.

           General knowledge and understanding of formal and informal bidding procedures and the legal implications and requirements of both.

           General knowledge of standard price and purchasing reference sources for transit materials, supplies and equipment.

           Strong verbal and written communication skills.

           Strong computer skills, specifically with Windows, Microsoft Office, Oracle and other PC and mainframe computer systems necessary to perform the duties of the position and construction sites.

           Intermediate skill in reading and interpreting specifications, plans, drawings and purchase requests.

           Ability to analyze requisitions and relate them to current and future needs.

           Ability to prepare clear and concise written reports and correspondence.

           Ability to establish and maintain effective working relationships with those contacted in the course of the work.

WORKING CONDITIONS

           General office environment.

           Occasionally required to visit operating locations including Bus Garages, Rail Shops, and construction sites.

           This position is considered a "C-List" position under the "Revolving Door" prohibition within the State Officials and Employees Act (5 ILCS 430/5-45), which contains a number of post-employment restrictions CTA employees in C-list designated positions must follow. Among other requirements listed in this statute, CTA employees in C-list designated positions are required to follow State notification procedures to the Office of the Executive Inspector General prior to acceptance of any applicable non-State employment or may be fined significant penalties.

EQUIPMENT, TOOLS, AND MATERIALS UTILIZED

           Standard office equipment.

           Personal computer and related software (i.e., Microsoft Office and Oracle).


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