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As400 Programming Jobs in Illinois (NOW HIRING)

Sarian, Inc.

AS400 Synon Engineer

Schaumburg, IL · On-site +1

... programming, array handling, commit control • 8+ years of hands-on coding experience in COBOL AS400 and/or Cobol ILE • Experience working with ACMS/MOM • Strong exposure to DB2400 Roles ...

THK AMERICA INC

Sales Administration Rep

Schaumburg, IL · On-site

$21.64 - $29.47/hr

Request pricing (and/or) approval drawings for customers using AS400 system and create quotes for customers by using the quotation database on Lotus Notes * Assist DM/ Engineers to enter in AS400 ...

THK AMERICA INC

Sales Administration Rep

Schaumburg, IL · On-site

$21.64 - $29.47/hr

Request pricing (and/or) approval drawings for customers using AS400 system and create quotes for customers by using the quotation database on Lotus Notes * Assist DM/ Engineers to enter in AS400 ...

Knapheide Manufacturing

Engineering Liaison

Quincy, IL · On-site

$61K - $80K/yr

Ability to identify Engineering and product changes. * Ability to identify standard practices ... Understanding of all Knapheide systems including AS400, KBS, EPDM and KnapPortal applications ...

Knapheide Manufacturing

Engineering Liaison

Quincy, IL · On-site

$61K - $80K/yr

Ability to identify Engineering and product changes.Ability to identify standard practices needed ... Understanding of all Knapheide systems including AS400, KBS, EPDM and KnapPortal applications ...

Coilcraft

IBM iSeries System Administrator

Cary, IL · On-site

$60K - $100K/yr

... to programming or infrastructure teams * Work with vendors and internal IT staff to maintain system hardware and software Who We're Looking For * 3+ years of experience operating IBM i / AS400 ...

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As400 Programming information

What is AS400 programming?

AS400 programming refers to developing applications on IBM's AS/400 (now IBM i) midrange computer system. It typically involves using languages like RPG (Report Program Generator), COBOL, and CL (Control Language) to create business applications for industries such as banking, manufacturing, and retail. AS400 programmers are responsible for designing, coding, testing, and maintaining applications that run on the IBM i platform. Their work ensures that critical business processes operate efficiently and reliably. The AS400 system is known for its robustness, security, and scalability, making it a popular choice for enterprise-level computing.

What are the key skills and qualifications needed to thrive as an AS400 programmer?

To thrive as an AS400 Programmer, you need a solid understanding of RPG, COBOL, and CL programming languages, as well as experience with IBM iSeries systems and a background in computer science or related fields. Familiarity with IBM DB2 databases, SEU/PDM tools, and knowledge of system integration or modernization tools like SQL and APIs is often required. Strong problem-solving abilities, attention to detail, and effective communication skills help programmers collaborate with business users and IT teams. These skills ensure reliable, efficient development and maintenance of mission-critical business applications on the AS400 platform.

What are some common challenges faced by AS400 programmers when maintaining legacy systems?

AS400 programmers often encounter challenges related to integrating legacy systems with modern applications, as well as deciphering and updating codebases that may lack thorough documentation. Working with older RPG or COBOL code can be complex, especially when troubleshooting or optimizing performance for current business needs. Collaboration with business analysts and end users is crucial to ensure that updates meet evolving requirements while maintaining the stability of core business functions.

What are popular job titles related to As400 Programming jobs in Illinois?

For As400 Programming jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching As400 Programming jobs in Illinois look for?

The top searched job categories for As400 Programming jobs in Illinois are:

As400 Programming jobs near you
Infographic showing various As400 Programming job openings in Illinois as of August 2026, with employment types broken down into 1% Internship, 85% Full Time, 10% Part Time, 3% Contract, and 1% Nights. Highlights an 88% Physical, 4% Hybrid, and 8% Remote job distribution.

AS400 /IBM i Admin Infrastructure Analyst || Hybrid Role

Innovise IT LLC

Chicago, IL • On-site

Other

Posted 25 days ago

Job description

Role: AS400 /IBM i Infrastructure Analyst

Duration: 6+ Months

Location:

  • Phoenix, AZ(Primary)
  • Plano, TX
  • Charlotte, NC
  • Richmond, VA
  • Jacksonville, FL
  • Pennington, NJ
  • Chicago, IL
Job Description-:
Required Skills & Qualifications
Hands-on experience with IBM i (AS400) systems administration
Strong proficiency in AS400 programming (RPG, CL, SQL)
Solid understanding of IBM system architecture and infrastructure
Experience with system performance monitoring and tuning

Apply