(USA) Senior, Systems and Infrastructure Engineer
About The Position
As a Mainframe Senior Systems and Infrastructure Engineer, you will lead the maintenance, automation, and optimization of critical infrastructure systems software to ensure high availability and performance. This role involves designing and implementing scalable solutions and automating routine tasks using advanced scripting and configuration management tools. You will collaborate across teams to assess requirements, resolve complex issues, and support infrastructure growth aligned with business objectives. Your expertise will drive continuous improvement in system reliability, security, and operational efficiency within a dynamic technology environment. About the team: The Mainframe Independent Software Vendor team manages third-party software critical to operations, security, data management, scheduling, and connectivity. They ensure secure, reliable software deployment through ownership accountability, access controls, documentation, upgrades, vendor coordination, and compliance with enterprise standards. Serving as a bridge between engineering, security, audit, and vendors, the team accelerates issue resolution, reduces risk, supports audit readiness, and proactively addresses vulnerabilities. Their work helps maintain stable, secure, and resilient mainframe systems that support uninterrupted enterprise operations.
Requirements
- Expertise in z/OS ISV lifecycle management, including onboarding, upgrades, configuration management, decommissioning, and vendor coordination.
- Experience supporting complex z/OS and Parallel Sysplex environments, including maintenance, performance monitoring, and issue resolution.
- Strong troubleshooting, escalation, and solution evaluation skills.
- Knowledge of security, compliance, access governance, vulnerability remediation, and audit readiness.
- Proficient in JCL, TSO, REXX, Python, and SQL automation.
- Experience using AI-assisted tools for observability, incident analysis, anomaly detection, documentation, and automation.
- Hands-on experience with key ISV products, including BMC, Compuware, Control-M, Mobius, Connect Direct, Tectia SSH, SAS, and MXG.
- Available for on-call support and incident resolution.
- 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.
- 5 years’ experience in technology infrastructure engineering across areas such as compute, storage, network, mobility or virtualization related technologies.
Nice To Haves
- 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 join us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.
Responsibilities
- Own the end-to-end lifecycle of ISV products on z/OS, including installation, configuration, maintenance, upgrades, patching, and enhancements.
- Lead complex incident investigation, root-cause analysis, and cross-team/vendor resolution to minimize risk/downtime.
- Maintain centralized repositories of issues, resolutions, runbooks, configuration standards, and operational knowledge.
- Ensure configuration standardization, release consistency, security remediation, and compliance with enterprise requirements.
- Govern change management, access controls, audit readiness, documentation, and approval processes.
- Monitor ISV health, performance, reliability, leveraging AI-assisted analytics to identify risks and accelerate resolution.
- Provide technical leadership, mentor associates, and drive adoption of operational standards/best practices.
- Develop automation and AI-enabled solutions using JCL, REXX, Python, SQL, and integration tooling to improve efficiency.
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 leave
- Jury duty leave
- Voting leave
- Short-term disability
- Long-term disability
- Company discounts
- Military Leave Pay
- Adoption and surrogacy expense reimbursement
- PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes
- Live Better U (Walmart-paid education benefit program for full-time and part-time associates)
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What This Job Offers
Job Type
Full-time
Career Level
Senior
