Senior L3 System Administrator

Job Summary

We are seeking an experienced AS/400 (IBM i) System Administrator with 8+ years of hands-on experience to manage, support, and maintain IBM i (iSeries / AS/400) environments. The ideal candidate will have deep technical expertise in system administration, performance tuning, security, backups, and high availability, ensuring the stability, reliability, and security of mission-critical business systems.

Key Responsibilities

• Administer, monitor, and support IBM i (AS/400 / iSeries) systems in production and non-production environments.
• Manage IBM i OS upgrades, PTFs, firmware updates, and system maintenance.
• Perform system monitoring, performance tuning, and capacity planning to ensure optimal system availability.
• Configure and maintain backups, restores, journaling, and disaster recovery procedures.
• Manage user profiles, authorization lists, object-level security, and system-level security policies.
• Support and manage DB2 for i databases, including backups, restores, and performance optimization.
• Work with subsysts, job queues, output queues, and spool file management.
• Troubleshoot system issues, conduct root cause analysis, and provide timely resolution.
• Support high availability (HA) / disaster recovery (DR) solutions where applicable (e.g., MIMIX, PowerHA).
• Collaborate with application teams, developers, and infrastructure teams to support business operations.
• Create and maintain technical documentation, operational procedures, and runbooks.
• Participate in on-call rotation and provide after-hours support as required.

Required Qualifications

• 8+ years of hands-on experience as an AS/400 / IBM i System Administrator.
• Strong expertise with IBM i (iSeries / AS/400) operating systems.
• Experience with CL programming; exposure to RPG / RPGLE is an asset.
• Solid knowledge of DB2 for i, system backups, restores, and performance tuning.
• Strong understanding of IBM i security concepts, user provisioning, and auditing.
• Experience managing job scheduling, subsystems, queues, and system monitoring tools.
• Ability to troubleshoot complex system and performance issues independently.
• Excellent communication skills and ability to work with technical and non-technical stakeholders.
• Eligible to work in Canada.

Nice to Have

• Experience with HA/DR solutions (MIMIX, PowerHA, iTera).
• Experience with IBM i modernization or migration projects.
• Exposure to Linux, AIX, or Windows environments.
• IBM certifications related to IBM i / Power Systems.
• Experience in regulated or enterprise environments.

Why Join Us

• Work on critical enterprise systems with long-term stability.
• Fully remote opportunity within Canada.
• Collaborative, professional environment with growth opportunities.
• Competitive compensation based on experience.