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As 400 Computer Operator Jobs in Chicago, IL (NOW HIRING)

ABOC

Computer Operator

Chicago, IL · On-site

$21/hr

... Computer Operator. This position is responsible for accurately and efficiently performing ... Perform other related duties as assigned. REQUIRED EDUCATION, EXPERIENCE AND SKILLS: * High school ...

HUB

AS/400 Senior Developer

Chicago, IL

$150K/yr

Solid understanding of Linux operating systems * Excellent communication skills with ability to ... Education: Bachelor's degree in computer science, Information Technology, or related field, or ...

ECHO

System Administrator

Lake Zurich, IL · On-site

$90K - $110K/yr

The IBM Power Systems Administrator / Operator is responsible for the administration, operation ... Requirements: * IBM i (AS/400 / iSeries) administration. * IBM Power Systems hardware ...

CAI

Network and Systems Administrator

Evanston, IL · On-site

$60 - $65/hr

NET, Java, AS/400 systems, and SaaS-based enterprise applications. There are many custom-built, in ... Design, configure, test, and maintain computer hardware, networking software, and operating systems ...

CAI

Network and Systems Administrator

Chicago, IL · On-site

$72K - $97K/yr

NET, Java, AS/400 systems, and SaaS-based enterprise applications. There are many custom-built, in ... Design, configure, test, and maintain computer hardware, networking software, and operating systems ...

CAI

Network and Systems Support Analyst

Evanston, IL

NET, Java, AS/400 systems, and SaaS-based enterprise applications. There are many custom-built, in ... Design, configure, test, and maintain computer hardware, networking software, and operating systems ...

CAI

Network and Systems Administrator

Chicago, IL · On-site

$72K - $97K/yr

NET, Java, AS/400 systems, and SaaS-based enterprise applications. There are many custom-built, in ... Design, configure, test, and maintain computer hardware, networking software, and operating systems ...

Ensono

Hardware Tech

Downers Grove, IL

AS/400 and S/390 or UNIX, and Windows operating systems and associated communications systems. The ... Training and experience working with the internals of computer hardware is required. Excellent ...

Warrior Insurance Network

iSeries Developer

Chicago, IL · On-site +1

$90K - $120K/yr

... AS/400) platform. This is a great opportunity for someone who enjoys working with stable systems ... Bachelor's degree in computer science or a related field preferred * Excellent problem-solving ...

Warrior Insurance Network

iSeries Developer

Chicago, IL · On-site

$90K - $120K/yr

... AS/400) platform. This is a great opportunity for someone who enjoys working with stable systems ... Bachelor's degree in computer science or a related field preferred * Excellent problem-solving ...

Warrior Insurance Network

iSeries Developer

Chicago, IL · On-site

$90K - $120K/yr

... AS/400) platform. This is a great opportunity for someone who enjoys working with stable systems ... Bachelor's degree in computer science or a related field preferred * Excellent problem-solving ...

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All JobsAs 400 Computer Operator JobsAs 400 Computer Operator Jobs in Chicago, IL

As 400 Computer Operator information

See Chicago, IL salary details

$14

$25

$38

How much do as 400 computer operator jobs pay per hour?

As of Jul 27, 2026, the average hourly pay for as 400 computer operator 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 are the key skills and qualifications needed to thrive as an AS/400 Computer Operator, and why are they important?

To thrive as an AS/400 Computer Operator, you need a solid understanding of IBM iSeries (AS/400) systems, job scheduling, and system monitoring, often supported by relevant IT certifications or experience. Familiarity with tools such as IBM Navigator for i, job control languages (JCL), and backup/recovery utilities is typically required. Strong problem-solving, attention to detail, and effective communication skills help operators quickly address system alerts and work collaboratively with IT teams. These skills are crucial to maintaining system uptime, ensuring data integrity, and supporting smooth business operations.

What are AS/400 computer operators?

AS/400 computer operators are IT professionals responsible for managing and maintaining IBM AS/400 (now IBM iSeries or IBM Power Systems) computer systems. Their duties typically include monitoring system operations, running batch jobs, performing backups, troubleshooting hardware and software issues, and ensuring the smooth operation of business-critical applications. They work closely with system administrators and programmers to keep the system secure, updated, and efficient. AS/400 operators may also assist users and escalate technical problems as needed.

What are some common challenges faced by AS/400 Computer Operators, and how can they be managed effectively?

AS/400 Computer Operators often encounter challenges such as managing system backups, monitoring batch jobs, and ensuring minimal downtime during scheduled maintenance. These tasks require strong attention to detail and the ability to quickly identify and resolve system errors or hardware issues. Effective communication with IT teams and proactive documentation of recurring problems can help operators manage these challenges efficiently. Additionally, staying current with IBM i system updates and best practices ensures smoother operations and reduces the likelihood of system disruptions.

What is the difference between As 400 Computer Operator vs AS/400 System Administrator?

AspectAs 400 Computer OperatorAS/400 System Administrator
CredentialsTypically requires a high school diploma or equivalent; certifications like IBM Certified System Operator are commonRequires similar certifications plus additional skills in system management and networking
Work EnvironmentOperates on the AS/400 mainframe, monitoring system operationsManages, maintains, and configures the AS/400 system environment
Job ResponsibilitiesRuns scheduled jobs, monitors system performance, handles basic troubleshootingPerforms system setup, troubleshooting, security management, and performance tuning

While both roles work with the IBM AS/400 system, the As 400 Computer Operator primarily monitors and runs scheduled tasks, whereas the AS/400 System Administrator handles system management, configuration, and troubleshooting. The administrator role requires more technical expertise and responsibilities.

What are popular job titles related to As 400 Computer Operator jobs in Chicago, IL? For As 400 Computer Operator jobs in Chicago, IL, the most frequently searched job titles are:
What job categories do people searching As 400 Computer Operator jobs in Chicago, IL look for? The top searched job categories for As 400 Computer Operator jobs in Chicago, IL are:
What cities near Chicago, IL are hiring for As 400 Computer Operator jobs? Cities near Chicago, IL with the most As 400 Computer Operator job openings:
As 400 Computer Operator jobs near you
Infographic showing various As 400 Computer Operator job openings in Chicago, IL as of July 2026, with employment types broken down into 1% As Needed, 81% Full Time, 10% Part Time, and 8% Contract. Highlights an 95% Physical, 2% Hybrid, and 3% Remote job distribution, with an average salary of $52,232 per year, or $25.1 per hour.

Computer Operator

ABOC

Chicago, IL • On-site

$21/hr

Full-time

Medical, Dental, Retirement

Posted 18 days ago

Job description

Description
For over 100 years, ABOC has fostered deep ties with our customers and our community, serving the banking needs of countless businesses, organizations, institutions, and individuals, many for multiple generations. These relationships are based on profound trust, in-depth understanding and highly personal and responsive service provided by our experienced bankers.
We take tremendous pride in being a great place to work! We value the contributions our employees bring to the table every day. We work hard to nurture and maintain a mutually respectful, diverse culture that fosters teamwork and a commitment to exceptional customer service.
ABOC is hiring a Computer Operator. This position is responsible for accurately and efficiently performing transaction capture, data entry, data validation, computer equipment and communication.
RESPONSIBILITIES:
  • Transmits customer and Bank files for processing.
  • Monitor various components including print back system and network backup jobs.
  • Perform e-statement system processing.
  • Complete batch processing for the Trust and Pension systems.
  • Generate and distribute departmental reports.
  • Maintains appropriate records, logs and documentation of departmental activity for reporting and audit services.
  • Process check capture, reject/re-entry and other balancing functions.
  • Conducts preventive and routine maintenance tasks on hardware and makes minor repairs in case of equipment malfunctions.
  • Report major problems relating to hardware and/or software to management and/or designated vendor representative for prompt resolution.
  • Flexibility to work evening hours required and potentially additional hours during critical processing periods.
  • Perform other related duties as assigned.

REQUIRED EDUCATION, EXPERIENCE AND SKILLS:
  • High school diploma or equivalent (required)
  • Microsoft 365 Experience
  • Knowledge of computer operations practices and procedures as is normally attained in three years of experience in a computer operations environment.
  • Effective communication and collaboration skills

BENEFITS:
  • Health and Dental Insurance
  • Pension
  • Employee Assistance Program
  • Open-door work environment
  • Opportunities for advancement
  • Community Service Opportunities

We are an equal opportunity employer and value diversity, equity, and inclusion at our company. We do not discriminate based on any protected category. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

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