AS400 /IBM i Infrastructure Administrator

Job summary

Administer and maintain IBM i systems across production, development, and test environments, including upgrades, security, performance, capacity, and backup and recovery. Resolve incidents, support high availability and disaster recovery, automate operational tasks, and maintain documentation while collaborating with application, database, and operations teams.

Job details

Job Title: AS400 /IBM i Infrastructure Admin Duration: 12+ months contract (possibility of extension/conversion) Work Location: Toronto, ON (Hybrid – 3days onsite, 2days WFH) The Role: As the AS400 (IBM i) Infrastructure Admin you will be responsible for the administration, stability, performance, and security of the IBM i (AS/400) infrastructure. This role ensures high availability of critical business applications by managing system operations, capacity, upgrades, backup/recovery, and incident resolution, while working closely with application, database, and operations teams. Key Responsibilities: IBM i / AS400 System Administration Administer, monitor, and support IBM i (AS/400) systems in production, development, and test environments. Perform system configuration, upgrades, PTF management, and OS releases. Manage system objects, libraries, user profiles, authorization lists, and security settings. Monitor system performance, job queues, subsystems, disk usage, and system logs. Manage high availability (HA) and disaster recovery (DR) solutions (e.g., PowerHA, MIMIX, iCluster). Perform capacity planning and performance tuning. Execute backup and recovery procedures and conduct regular restore testing. Incident, Problem & Change Management Troubleshoot and resolve system-level incidents and performance issues. Support change management processes, including patching and infrastructure changes. Work collaboratively with service management tools (e.g., ServiceNow). Security & Compliance Enforce IBM i security best practices, user access controls, and audit requirements. Support internal and external compliance audits (SOX, PCI, etc.). Monitor system access, review logs, and remediate vulnerabilities. Automation & Continuous Improvement Develop and maintain CL, RPG, or scripting solutions to automate operational tasks. Identify and implement infrastructure improvements and optimization opportunities. Create and maintain technical documentation, runbooks, and operational procedures.

What you’ll do

Administer and maintain IBM i systems across production, development, and test environments, including upgrades, security, performance, capacity, and backup and recovery. Resolve incidents, support high availability and disaster recovery, automate operational tasks, and maintain documentation while collaborating with application, database, and operations teams.

Requirements

The role calls for expertise administering IBM i (AS/400) infrastructure, including system operations, security, performance, upgrades, and backup and recovery. Experience with high availability and disaster recovery solutions, incident and change management, and CL, RPG, or scripting automation is relevant; no specific education requirement is stated.

Listed skills

• Change Management · Preferred
• Incident Management · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• IBM i Administration
• AS/400 System Administration
• System Configuration
• PTF Management
• Operating System Upgrades
• IBM i Security
• High Availability
• Disaster Recovery
• Capacity Planning
• Performance Tuning
• Backup and Recovery
• Incident Management
• Change Management
• CL
• RPG
• Automation

Job areas

• Technology
• Software
• Security & Safety