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As400 Developer Jobs in Chicago, IL (NOW HIRING)

Coilcraft

IBM iSeries System Administrator

Cary, IL · On-site

... 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 ...

Coilcraft

IBM iSeries System Administrator

Cary, IL · On-site

$60K - $100K/yr

... programming or infrastructure teamsWork with vendors and internal IT staff to maintain system hardware and softwareWho We're Looking For3+ years of experience operating IBM i / AS400 / iSeries ...

Metropolis

People Operations Coordinator

Chicago, IL · On-site

$24 - $29/hr

Facilitate the new hire process from ICIMS to the AS400, ensuring timely and accurate onboarding ... When you join Metropolis, you'll join a team of world-class product leaders and engineers, building ...

suncast

Quality Engineer

Batavia, IL

$75K - $85K/yr

The Quality Assurance Engineer (QAE) supports new product launches, engineering changes, and pilot ... AS400, SolidWorks, and Mattec experience preferred. * The ability to lift up to 50 pounds. The ...

suncast

Quality Engineer

Batavia, IL

$75K - $85K/yr

The Quality Assurance Engineer (QAE) supports new product launches, engineering changes, and pilot ... AS400, SolidWorks, and Mattec experience preferred. * The ability to lift up to 50 pounds. The ...

Suncast

Quality Engineer

Batavia, IL · On-site

$75K - $85K/yr

The Quality Assurance Engineer (QAE) supports new product launches, engineering changes, and pilot ... AS400, SolidWorks, and Mattec experience preferred. * The ability to lift up to 50 pounds. The ...

Metropolis

People Operations Coordinator

Chicago, IL · On-site

$24 - $29/hr

Facilitate the new hire process from ICIMS to the AS400, ensuring timely and accurate onboarding ... When you join Metropolis, you'll join a team of world-class product leaders and engineers, building ...

Supplied Talent

Strategic Sourcing Manager

Hillside, IL · On-site

$126K - $164K/yr

Collaborate with Engineering, Quality, and Operations teams to support new product introductions ... Experience with AS400 or similar ERP systems is a plus. * Familiarity with machining, metal ...

Metropolis

People Operations Coordinator

Chicago, IL · On-site

$24 - $29/hr

Facilitate the new hire process from ICIMS to the AS400, ensuring timely and accurate onboarding ... When you join Metropolis, you'll join a team of world-class product leaders and engineers, building ...

Supplied Talent

Strategic Sourcing Manager

Hillside, IL · On-site

$126K - $164K/yr

Collaborate with Engineering, Quality, and Operations teams to support new product introductions ... Experience with AS400 or similar ERP systems is a plus. * Familiarity with machining, metal ...

Supplied Talent

Strategic Sourcing Manager

Hillside, IL · On-site

$126K - $164K/yr

Collaborate with Engineering, Quality, and Operations teams to support new product introductions ... Experience with AS400 or similar ERP systems is a plus. * Familiarity with machining, metal ...

Huhtamaki

Production Manager

Hammond, IN

Manages relationships with quality, planning, warehouse, engineering, and maintenance to ensure ... BPCS or AS400 manufacturing software system knowledge desirable. Environment Office work area is a ...

Intertape Polymer Group (IPG)

Xpak Operator

Chicago, IL · On-site

$21 - $24/hr

From tapes and films to packaging and protective products, as well as engineered coated materials ... Basic computer knowledge, AS400, Word, Excel * Ability to repeatedly lift up to a maximum of 40 lbs.

Claire's

Manager, Infrastructure (Hybrid)

Rosemont, IL · On-site

$120K - $130K/yr

Telecom Billing & Service Provisioning, Network Operations, AS400 Operations, and Systems ... Work with engineering teams to suggest new technologies and improve existing infrastructure

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All JobsAs400 Developer JobsAs400 Developer Jobs in Chicago, IL

As400 Developer information

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How much do as400 developer jobs pay per hour?

As of Aug 8, 2026, the average hourly pay for as400 developer in Chicago, IL is $56.60, according to ZipRecruiter salary data. Most workers in this role earn between $51.78 and $60.24 per hour, depending on experience, location, and employer.

How much do AS400 developers make?

AS400 developers typically earn between $70,000 and $110,000 annually, depending on experience, location, and certifications. Senior roles or those with specialized skills in RPG or CL programming may command higher salaries, especially in industries like finance or healthcare that rely heavily on legacy systems.

What does an AS400 developer do?

A typical day for an AS400 Developer involves writing, testing, and troubleshooting code in RPG, COBOL, or CL for business-critical applications running on IBM iSeries systems. Developers often work closely with business analysts, system administrators, and other IT professionals to gather requirements, implement system enhancements, and ensure data integrity within DB2 databases. Daily tasks may also include resolving production issues, performing regular maintenance, and participating in code reviews or deployment planning. Collaborative work and clear communication are common, as developers typically play an integral role in supporting both legacy and modernized business processes.

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

To thrive as an AS400 Developer, you need strong skills in RPG, COBOL, or CL programming languages, knowledge of IBM iSeries/AS400 systems, and typically a degree in computer science or related field. Familiarity with DB2 databases, SQL, and tools like Turnover or Aldon for change management and version control is highly valued, and certifications in IBM technologies are beneficial. Strong problem-solving abilities, attention to detail, and effective communication help developers collaborate with cross-functional teams and resolve technical issues efficiently. These competencies ensure reliable business application support, seamless integration with enterprise systems, and success in maintaining legacy environments.

How to become an AS400 developer?

To become an AS400 developer, you should gain proficiency in IBM iSeries (AS/400) systems, learn programming languages such as RPG, COBOL, or CL programming, and develop skills in database management and system administration. Earning relevant certifications and gaining experience through training or entry-level positions can also enhance your qualifications.

Is AS400 still in demand?

AS400 developers are still in demand in industries that rely on legacy systems, such as banking, manufacturing, and government. Many organizations seek professionals with skills in RPG, CL, and IBM i environments to maintain and upgrade their AS400 systems, though the overall demand has decreased as companies modernize their IT infrastructure.
What are the most commonly searched types of As400 Developer jobs in Chicago, IL? The most popular types of As400 Developer jobs in Chicago, IL are:
What are popular job titles related to As400 Developer jobs in Chicago, IL? For As400 Developer jobs in Chicago, IL, the most frequently searched job titles are:
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As400 Developer jobs near you
Infographic showing various As400 Developer job openings in Chicago, IL as of August 2026, with employment types broken down into 58% Full Time, and 42% Contract. Highlights an 100% In-person job distribution, with an average salary of $117,735 per year, or $56.6 per hour.

IBM iSeries System Administrator

Coilcraft

Cary, IL • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 10 days ago

Coilcraft rating

8.0

Company rating: 8.0 out of 10

Based on 8 frontline employees who took The Breakroom Quiz

Job description

Location: Cary, Illinois

Coilcraft, Inc. is a privately held global manufacturing organization headquartered in Cary, Illinois, with a worldwide reputation for high-quality passive electronic components. Our systems support manufacturing, finance, and operations across multiple facilities, and system reliability is critical to our daily business. We are seeking a dependable and detail-oriented IBM iSeries / Infor XA System Operator to manage and monitor our core ERP environment. This role is responsible for maintaining system stability, supporting batch processing, and ensuring backups and nightly operations are completed successfully to keep our manufacturing and business workflows running without interruption.

About the Role and Your Impact
  • Monitor IBM i / AS400 / iSeries systems (QSYSOPR) for messages, errors, and hardware alerts
  • Apply program fixes (PTFs) and perform routine system maintenance
  • Manage job scheduler and monitor active batch jobs
  • Troubleshoot job failures, clear message waits (MSGW), and ensure nightly processing completes on time
  • Provide front-line support for the Infor XA (MAPICS) ERP environment
  • Configure and maintain printer queues, output queues, and environment refreshes
  • Execute and verify daily, weekly, and monthly backups
  • Assist with disaster recovery procedures and media rotation
  • Manage spool files, overlays, and forms/label software
  • Support third-party output tools such as TLA Barcode / TLA Forms
  • Document system activity and communicate issues 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 / iSeries systems
  • Direct experience supporting Infor XA / MAPICS ERP
  • Command-line proficiency (CL, WRKACTJOB, WRKSYSSTS, etc.)
  • Familiarity with DB2 for i and basic SQL queries
  • Understanding of work management concepts, including subsystems, job queues, and memory pools
  • Experience with IBM Power hardware (Power8 / Power9 / Power10 / Power11)
  • Working knowledge of TCP/IP, SMTP, and FTP in IBM i environments
  • Ability to diagnose system, connectivity, and hardware issues
  • Strong documentation and communication skills
Preferred Skills
  • Experience with monitoring software (for example: Halcyon)
  • Experience with replication / HA solutions (for example: iTera)
  • Exposure to RPG programming
  • Experience supporting ERP systems in a manufacturing environment
Why You'll Love Working at Coilcraft
  • Career stability at a privately held company with a 75+ year history
  • Critical role supporting core business and manufacturing systems
  • Work with experienced IT, engineering, and operations teams
  • Hands-on environment with real responsibility
  • Comprehensive benefits including health insurance, 401(k) with match, and profit sharing
Benefits
  • 401(k) Matching
  • Dental Insurance
  • Disability Insurance
  • Employee Assistance Program
  • Flexible Spending Account
  • Health Insurance
  • Health Savings Account
  • Life Insurance
  • Paid Holidays
  • Paid Time Off
  • Profit Sharing
  • Vision Insurance

Equal Opportunity Employer: Disability / Veteran. This position may require compliance with ITAR export regulations; applicants must be U.S. citizens or permanent residents.

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