Landmark Group
Website:
landmarkgroup.com
Job details:
Landmark Group
Landmark Digital is the dynamic digital arm of Landmark Retail, serving as the cornerstone of our omnichannel business strategy. Headquartered in Dubai, UAE, with a strong technology and development hub in Bengaluru, we build and scale digital products, platforms, and experiences that power our retail businesses across multiple markets.
Role Summary
Senior L3 technical ownership of enterprise AIX and Power infrastructure, including complex incident resolution, reliability, lifecycle management, security, HA/DR, performance, automation and technical leadership. The role is a senior escalation point, RCA lead, stakeholder communicator and mentor to L1/L2 engineers.
L3 Responsibilities
- Own complex AIX, Power Systems, PowerVM, VIOS, LPAR and HMC incidents from triage through recovery and permanent remediation
- Lead major-incident bridges, stakeholder updates, structured RCA, corrective/preventive actions and problem management
- Design and review resilient solutions aligned with availability, capacity, security and recovery objectives
- Provide technical leadership for migrations, upgrades, platform refreshes and onboarding
- Mentor L1/L2 administrators, review runbooks and lead knowledge transfer
- Maintain build documents, procedures, topology diagrams and known-error records
Security, Patching and Compliance
- Plan and execute AIX, VIOS, HMC, Power firmware and RHEL/Linux patching with testing, rollback and outage controls
- Apply hardening, least privilege, access control, secure remote administration, encryption and vulnerability remediation
- Maintain patch/vulnerability evidence, security exceptions, audit support, privileged-access and logging controls
Must Have
- 8+ years of hands-on IBM AIX and production infrastructure support
- Advanced AIX 6.x/7.x administration, troubleshooting, patching and lifecycle management
- Strong IBM Power Systems, PowerVM, LPAR, VIOS and HMC experience
- PowerHA or comparable HA/failover experience
- Strong RHEL and multiple Linux-flavour experience
- Proven L3 ownership of complex incidents, major incidents, problem management and RCA
- SAN/NAS, multipathing, NFS, TCP/IP and DNS experience
- KSH/Bash scripting and automation capability
- Clear communication, documentation, stakeholder management and mentoring
- Participation in on-call and maintenance activities
Technical Responsibilities
- Administer AIX 6.x, 7.x and later: installation, configuration, patching, upgrades, filesystems, LVM, boot/recovery and device management
- Manage IBM Power7+ systems, firmware coordination, hardware troubleshooting, PowerVM, LPAR, VIOS, virtual I/O, fibre channel, virtual SCSI and SEA
- Operate HMC, partition profiles, managed systems, console access, alerts and capacity changes
- Manage SAN/NAS, provisioning, multipathing, zoning/host mappings and storage performance
- Troubleshoot TCP/IP, NFS, DNS, routing, MTU and network-related application symptoms
- Administer PowerHA or equivalent clustering, failover/fallback, dependencies, split-brain prevention and recovery validation
- Support backup, restore, DR testing, performance tuning and capacity forecasting
- Automate with KSH, Bash, Ansible or equivalent tooling
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