Landry Ottou

About

IBM Power/AIX infrastructure engineer who has owned a sizable production estate (50 Power servers / ~200 LPARs) spanning VIOS/HMC, SAN/NFS, and PowerHA clusters. Demonstrates strong incident leadership (LPAR outage + split-brain recovery) and a process-improvement mindset with measurable reductions in recurrence/MTTR, while also bringing modern DevOps/IaC experience (Jenkins, ArgoCD, Terraform, security scanning, canary/blue-green).

Key Strengths

• Owned large-scale IBM Power/AIX estate (50 P-series servers, ~200 LPARs) with day-to-day ops (capacity, patching, firmware, incident response)
• End-to-end outage troubleshooting on LPAR/DLPAR/VIOS issues (vSCSI/path loss, firmware rollback, mapping restoration) and restored service within SLA
• Converted incidents into durable operational improvements (runbooks, pre-change sanity checks, firmware compatibility checks) with reported ~80% reduction in similar incidents
• Led PowerHA failover testing and split-brain recovery; implemented quorum/fencing and health checks reducing recovery time by ~60%
• Structured migration/cutover execution with phased runbooks, validation scripts, and explicit rollback criteria (golden backups/snapshots)
• Built secure CI/CD with security scanning (SAST/DAST/container), Git approvals, immutable releases, and canary deployments; diagnosed flaky tests and image hash drift
• Implemented Terraform IaC with modular design, remote state/locking, CI plan-approve-apply workflow, and drift detection

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