(USA) Senior, Systems and Infrastructure Engineer

Walmart•Bentonville, AR

19h•$80,000 - $155,000•Onsite

About The Position

The Mainframe Storage Engineer is responsible for supporting and optimizing Walmart’s enterprise mainframe storage infrastructure across complex, high availability parallel sysplex environments. This role manages storage pools, virtual tape, disaster recovery processes, and IBM storage technologies that support mission critical workloads at large scale. The engineer works closely with mainframe systems, capacity planning, operations, and application teams to ensure resilience, performance, and operational excellence. Responsibilities include managing storage pools (adding volumes, cleanup, reclaiming unused volumes), providing expert support for space allocation and usage optimization, administering and maintaining IBM DS8K storage systems, supporting multiple large-scale parallel sysplex environments with data sharing, and performing system initialization, performance tuning, and subsystem optimization. The role also involves supporting virtual tape operations (ideally with Luminex experience), working with DFHSM for hierarchical storage management, and utilizing tools like FDR and MVSRM for backup, recovery, and storage resource management. The engineer will support IBM GDPS environments (Metro Mirror, Global Mirror, Metro-Global Mirror, Hyperswap), participate in Disaster Recovery planning, testing, and execution, and maintain DR readiness. Further duties include installing, upgrading, and maintaining IBM and third-party mainframe storage-related products, performing SMPE installation and maintenance, using IBM utilities (DB2, IMS), and utilizing JCL, TSO, and mainframe scripting (Rexx, CLIST).

Requirements

Deep knowledge of DFHSM, DFSMS, FDR, MVSRM, and related storage utilities.
Experience managing mainframe storage pools and volume lifecycle operations.
Strong understanding of mainframe storage concepts, catalogs, and alias structures.
MVS System commands, catalog management.
Strong skills with: JCL, TSO, Rexx & CLIST scripting.
Experience with SMPE for installation and maintenance.
Experience with UNIX System Services (file systems, mounts).
Experience with multi-site and multi-sysplex environments.
Familiarity with IBM GDPS and replication technologies.
IBM DS8K storage experience required.
Experience with DB2/IMS utilities.
Knowledge of system initialization, tuning, and performance optimization.
Ability to participate in on-call rotation as needed.
Option 1: Bachelor's degree in computer science, computer engineering, information systems, information technology, or related area and 3 years’experience in technology infrastructure engineering across areas such as compute, storage, network, mobility or virtualization-related technologies.
Option 2: 5 years’ experience in technology infrastructure engineering across areas such as compute, storage, network, mobility or virtualization related technologies.

Nice To Haves

Familiarity with Disaster Recovery methodologies and tooling.
Mainframe networking concepts.
Experience with storage management and data governance in enterprise environments.
Advanced tuning, automation, and tooling for storage workflows.
Experience with BMC Tools (MainView / AMI OPS, SRM, AutoOps).
Experience with Compuware (FileAid, Xpediter).
Experience with Scheduling & Automation (ControlM or ICE conversion experience, OPS/MVS).
Experience with Other Mainframe Products (Rocket Software MobiusView / Infopac, JCLPlus (SEA), MacKinney Batch for CICS (CEMT), RIO (Vanguard), Sterling Commerce Connect:Direct, Tectia SSH, UNIX System Services).
Strong analytical and troubleshooting abilities.
Ability to work effectively across cross-functional teams.
Strong communication skills, both written and verbal.
High attention to detail and accuracy.
Ability to manage multiple priorities in a fast-paced environment.
Master’s degree in computer science, computer engineering, information systems, information technology, or related area.
1 Year of relevant experience in configuration management, developing automation for Provisioning and Orchestration, experience developing and managing service-level objectives (SLOs)/service level indicators (SLIs) for Infrastructure Service availability and performance.
Background in creating inclusive digital experiences, demonstrating knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards, assistive technologies, and integrating digital accessibility seamlessly.
Knowledge of accessibility best practices and joining us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.

Responsibilities

Manage storage pools, including adding volumes, cleanup, and reclaiming unused volumes.
Provide expert support for space allocation recommendations and usage optimization.
Administer and maintain IBM DS8K storage systems.
Support multiple large-scale parallel sysplex environments with data sharing.
Perform system initialization, performance tuning, and subsystem optimization.
Support virtual tape operations, ideally with experience in Luminex virtual tape systems (preferred but not required).
Work with DFHSM for hierarchical storage management.
Utilize tools including FDR and MVSRM for backup, recovery, and storage resource management.
Support IBM GDPS environments, including: Metro Mirror, Global Mirror, Metro-Global Mirror, Hyperswap.
Participate in Disaster Recovery planning, testing, and execution.
Maintain DR readiness across mainframe storage assets.
Install, upgrade, and maintain IBM and third-party mainframe storage-related products.
Perform SMPE installation and maintenance of program products.
Use IBM utilities including DB2 and IMS utilities.
Utilize JCL, TSO, and mainframe scripting (Rexx, CLIST).

Benefits

Competitive pay
Performance-based bonus awards
Medical coverage
Vision coverage
Dental coverage
401(k)
Stock purchase
Company-paid life insurance
PTO (including sick leave)
Parental leave
Family care leave
Bereavement
Jury duty
Voting
Short-term disability
Long-term disability
Company discounts
Military Leave Pay
Adoption and surrogacy expense reimbursement
Live Better U (Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities. Programs range from high school completion to bachelor's degrees, including English Language Learning and short-form certificates. Tuition, books, and fees are completely paid for by Walmart).