IBMi/AS400 Systems Engineer - Production Support

Infinite Computer Solutions; Illinois; On-site; USD 90,000 - 130,000; Full time

Job summary

Infinite Computer Solutions in Illinois seeks a Software Engineer with hands-on AS400/IBMi administration and production support to maintain platform availability, administer OS400 services, and drive reliable backups and upgrades.

You will monitor system performance, resolve incidents, automate routine tasks, manage security and access, and collaborate with application, infrastructure and service-management teams to ensure smooth production operations.

Qualifications

• Bachelor’s degree in computer science, Computer Engineering, or related field.
• Knowledge of Automation/Monitoring Tools.
• Knowledge in ACS Client Installation and Setup.
• Knowledge in iSeries New System Builds and Decommission.
• Strong knowledge of iSeries PTF/APAR Management.
• Strong Knowledge on iSeries AS400 Security Management.
• Expertise Knowledge in High Availability – MIMIX, iCluster.
• Strong problem-solving skills and ability to work in a fast-paced environment.
• Excellent written and verbal communication skills.

Responsibilities

• Perform day-to-day IBM i system administration, monitoring and operational health checks for production and non-production environments.
• Handle user profiles, authorities, object ownership, group profiles, access controls and OS400 security administration in line with organizational policies.
• Monitor subsystems, jobs, messages, output queues, storage, system status and critical services; investigate and resolve operational issues.
• Perform job control, job monitoring and scheduling using native IBM i scheduling facilities or enterprise tools such as Robot, IBM Advanced Job Scheduler, Control-M or Halcyon.
• Execute backup and recovery activities using BRMS, native tape backups and virtual tape solutions; validate completion and elevate exceptions promptly.
• Support IBM i OS upgrades, PTFs, cumulative updates, APAR analysis and application software maintenance using approved change procedures.
• Assist with Power System, HMC and VIOS operational tasks, including health checks, configuration reviews and issue coordination.
• Perform system-performance troubleshooting with tools such as IBM iDoctor or Performance Manager and recommend practical remediation.
• Support data replication and high-availability operations, including monitoring and initial troubleshooting of solutions such as MIMIX or iCluster.
• Participate in system builds, migrations, environment refreshes and decommissioning activities under senior technical guidance.
• Maintain operational documents, runbooks, incident records and change-related evidence for audit and knowledge sharing.
• Participate in on-call, weekend or planned maintenance activities as required by business and service commitments.

Skills

IBMi administration

Automation/Monitoring

OS security management

Troubleshooting

Backup/DR management

Job scheduling

Education

Bachelor's degree in CS/Engineering

Tools

Robot Scheduling

IBM Advanced Job Scheduler

Halcyon

BRMS

MIMIX

iCluster

IBMi Doctor

Performance Manager

HMC/VIOS

Job description

Infinite Computer Solutions in Illinois seeks a Software Engineer with hands-on AS400/IBMi administration and production support to maintain platform availability, administer OS400 services, and drive reliable backups and upgrades.

You will monitor system performance, resolve incidents, automate routine tasks, manage security and access, and collaborate with application, infrastructure and service-management teams to ensure smooth production operations.