Aix system administrator

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

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, Power VM, LPAR, VIOS and HMC experience. Power HA 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.

Good to Have

IBM AIX or Power Systems certification. IBM Cloud, OCI, Azure or hybrid-cloud experience. Power VC, NIM, monitoring, ITSM/CMDB or configuration-management exposure. Db2, Oracle, Web Sphere or other enterprise AIX workloads. DR orchestration, cyber-recovery, immutable backups or regulated environments. Infrastructure-as-code, Git and CI/CD for operational tooling.

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.