Systems and Infrastructure Engineer III, Information Security

What you’ll do

• Create, tune, and enforce Web Application Firewall (WAF) policies across global eCommerce sites

• Continuously evaluate and adapt ingress security policies based on the evolving threat landscape

• Mature our client-side evaluation and fingerprinting capabilities

• Assess and manage protection strategies during active cyber-attacks

• Control and monitor scripted traffic across all digital properties

• Collaborate with network and site reliability teams to secure all ingress points

• Build, deploy, and manage security infrastructure and operations to support overall web security

What you’ll bring

• Hands-on experience with Web Application Firewall (WAF) management and DDoS mitigation strategies

• Strong knowledge of network and web protocols such as TCP/IP, IPSec, HTTPS, and SSL

• Deep understanding of how web properties and Content Delivery Networks (CDNs) function

• Experience with client-side fingerprinting and behavioral data collection

• Proficiency with log management tools such as Splunk, Kibana, or ArcSight

• Strong scripting skills in at least one language

• Familiarity with cloud platforms including Azure and GCP

Bonus points for

• A security-first mindset with a solid foundation in key security domains: access control, application security, network security, and architecture

• Knowledge of network and security tools and protocols, including Firewalls and DNS

• Strong analytical, problem-solving, and interpersonal communication skills

• A collaborative spirit with a proactive and self-driven attitude

Minimum Qualifications

Outlined below are the required minimum qualifications for this position. If none are listed, there are no minimum qualifications.

Option 1: Bachelor's degree in computer science, information technology, engineering, information systems, cybersecurity, or related area and 2years’ experience in systems and infrastructure engineering or related area at a technology, retail, or data-driven company.
Option 2: 4 years’ experience in systems and infrastructure engineering or related area at a technology, retail, or data-driven company.

Preferred Qualifications

Outlined below are the optional preferred qualifications for this position. If none are listed, there are no preferred qualifications.

Certification in Security+, GISF, CISSP, CCSP, or GSEC, Master’s degree in Computer Science, Information Technology, Engineering, Information Systems, Cybersecurity, or related area, We value candidates with a 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. The ideal candidate would have 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.

At Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits for a happier mind, body, and wallet. Health benefits include medical, vision and dental coverage. Financial benefits include 401(k), stock purchase and company-paid life insurance. Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting. Other benefits include short-term and long-term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement, and more.