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AO
Abi Olatunji
Senior DevSecOps/SRE Engineer specializing in secure AWS & Azure cloud platforms
Dallas, TXDevSecOps Engineer9 years experienceSeniorHealthcareRetailFinancial Services
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About
Senior production infrastructure/SRE-style engineer with deep IBM Power/AIX (7.2/7.3) ownership at scale (40+ LPARs) supporting SAP/Oracle, including live DLPAR changes and PowerHA clustering. Also brings modern cloud/DevOps experience—Azure DevOps CI/CD secured with Key Vault and Terraform-based Azure provisioning—bridging legacy enterprise platforms with cloud automation.
Experience
DevSecOps EngineerSentara Health
DevOps EngineerKroger
Cloud DevOps EngineerTexas Capital Bank
Education
University of Maiduguribachelor, Computer Science
Key Strengths
- Owned large-scale IBM Power/AIX production footprint (40+ production LPARs across multiple frames with dual HMCs)
- End-to-end performance troubleshooting using AIX tooling (topas, vmstat, svmon, iostat, netstat) to isolate CPU wait/paging/I/O issues
- Resolved critical SAP performance incident by coordinating SAN FC path restoration and executing live DLPAR CPU/memory increases with no downtime
- Hands-on PowerHA/HACMP operations for SAP/Oracle on dual-node AIX with shared SAN; executed failover and validated service recovery within SLA
- Structured failover testing methodology (health checks, controlled RG move, IP/VG validation, app verification, documented results)
- Led discovery-to-stabilization migration/cutover planning with inventory, dependency mapping, rollback planning, and post-go-live monitoring
- Built/maintained secure Azure DevOps CI/CD with Key Vault secrets, approvals, artifact versioning, and rollback; diagnosed and fixed pipeline env-var failure
- Implemented Terraform IaC for Azure with modular code, remote state/locking, staged promotions, drift checks, and controlled rollouts
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