AS/400 Administrator

IBM iSeries (AS/400) Infrastructure Administrator - 100% Remote

Location: Colombia

Work Mode: Remote

Job Summary

We are seeking a highly experienced IBM iSeries (AS/400) Infrastructure Administrator – L1/ L2/L3 to lead the administration, optimization, modernization, and support of enterprise IBM i environments.

The ideal candidate will serve as the highest level of technical escalation for IBM i infrastructure, with strong expertise in performance tuning, security, backup and recovery, high availability, disaster recovery, storage, HMC, VIOS, and IBM Power systems.

The role requires strong technical leadership, solution design capabilities, vendor coordination, and the ability to mentor L1/L2 support teams while ensuring the reliability, availability, and security of business-critical IBM i platforms.

Key Responsibilities

Technical Leadership & Escalation

• Provide L3 technical leadership and mentoring to L1 Operators and L2 Administrators.
• Handle complex infrastructure incidents and critical escalations.
• Develop operational procedures, standards, and IBM i best practices.
• Support architecture reviews and infrastructure planning.

IBM i Administration & Performance

• Administer and optimize IBM i environments.
• Perform performance analysis, system assessments, and capacity planning.
• Monitor system health, availability, and operational metrics.
• Prepare executive-level reports on infrastructure performance and availability.

Required Skills

• IBM i / AS400 infrastructure administration experience.
• Strong hands-on experience with IBM i, IBM Power Systems, and LPARs.
• Expertise in HMC and VIOS administration.
• Strong knowledge of IBM i performance management and capacity planning.
• Experience with BRMS, backup/recovery, HA, and DR.
• Strong knowledge of IBM i security, SSL certificates, Digital Certificates, SSH, and secure key management.
• Experience with IFS, SAN, storage, and tape libraries.
• Strong knowledge of TCP/IP networking on IBM i.
• Experience with Advanced Job Scheduler.
• Hands-on experience with IBM i OS upgrades, PTF management, and Power firmware upgrades.
• Experience managing production IBM i environments and critical incidents.
• Strong troubleshooting, analytical, and problem-solving skills.
• Excellent communication and stakeholder management skills.
• Willingness to participate in 24x7 on-call and critical incident support.