(usa) Senior, Systems and Infrastructure Engineer

Walmart Walmart · Retail · ISD - DGTC AR BENTONVILLE

Senior Systems and Infrastructure Engineer focused on supporting and optimizing Walmart’s enterprise mainframe storage infrastructure in complex, high availability parallel sysplex environments. Responsibilities include managing storage pools, virtual tape, disaster recovery, and IBM storage technologies for mission-critical workloads. The role requires close collaboration with mainframe systems, capacity planning, operations, and application teams to ensure resilience, performance, and operational excellence.

What you'd actually do

  1. Manage storage pools, including adding volumes, cleanup, and reclaiming unused volumes.
  2. Provide expert support for space allocation recommendations and usage optimization.
  3. Administer and maintain IBM DS8K storage systems.
  4. Support multiple large-scale parallel sysplex environments with data sharing.
  5. Perform system initialization, performance tuning, and subsystem optimization.

Skills

Required

  • DFHSM
  • DFSMS
  • FDR
  • MVSRM
  • mainframe storage pools
  • volume lifecycle operations
  • mainframe storage concepts
  • catalogs
  • alias structures
  • MVS System commands
  • catalog management
  • JCL
  • TSO
  • Rexx & CLIST scripting
  • SMPE for installation and maintenance
  • UNIX System Services (file systems, mounts)
  • multi-site and multi-sysplex environments
  • IBM GDPS and replication technologies
  • IBM DS8K storage
  • DB2/IMS utilities
  • system initialization, tuning, and performance optimization

Nice to have

  • Luminex virtual tape systems
  • Disaster Recovery methodologies and tooling
  • Mainframe networking concepts
  • storage management and data governance in enterprise environments
  • Advanced tuning, automation, and tooling for storage workflows
  • BMC Tools (MainView / AMI OPS, SRM, AutoOps)
  • Compuware (FileAid, Xpediter)
  • ControlM or ICE conversion experience
  • OPS/MVS
  • Rocket Software MobiusView / Infopac
  • JCLPlus (SEA)
  • MacKinney Batch for CICS (CEMT)
  • RIO (Vanguard)
  • Sterling Commerce Connect:Direct
  • Tectia SSH
  • UNIX System Services

What the JD emphasized

  • IBM DS8K storage experience required