IBM iSeries (AS/400) Infrastructure Administrator

Experience: 11+ Years

Location: Colombia, LATAM

Work Mode: Remote

Job Summary

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

The adecuado 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.

Security Administration

- Design and administer IBM i security policies and controls.
- Manage SSL and Digital Certificates.
- Configure and maintain SSH security and secure key generation.
- Support security audits, compliance, and vulnerability remediation.

Backup, Recovery & DR

- Monitor and manage enterprise backup schedules.




- Troubleshoot backup failures, unsaved objects, and BRMS issues.
- Develop and maintain backup and recovery strategies.
- Design and support High Availability (HA) and Disaster Recovery (DR) environments.
- Lead DR testing, failover, and failback activities.
- Ensure RPO/RTO requirements are met.

Storage & IFS

- Administer internal and external storage environments.
- Perform storage expansion, disk balancing, and performance tuning.
- Administer and secure the Integrated File System (IFS) .
- Manage SAN connectivity and storage presentation.

Network Administration

- Configure and troubleshoot TCP/IP networking on IBM i .
- Manage connectivity between IBM i systems, HMCs, tape libraries, and integrated services.

Job & Workload Management

- Administer Advanced Job Scheduler (AJS) environments.
- Design and manage production job scheduling strategies.

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 .

📌 IBM iSeries (AS/400) Administrator (Colombia)
🏢 GeorgiaTEK Systems
📍 Colombia