AS400 /IBM i Infrastructure Administrator

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.