Systems and Infrastructure Engineer III, Information Security-Web Security

Position Summary

This role is responsible for strengthening the security of all web ingress points across global eCommerce platforms. It focuses on developing and tuning WAF policies, enhancing client‑side detection and fingerprinting, managing defenses during active cyber‑attacks, and controlling scripted traffic. The position also collaborates closely with network and site reliability teams while building and operating the infrastructure that supports the organization’s overall web security posture.

• 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

• 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 Arc Sight
• Strong scripting skills in at least one language
• Familiarity with cloud platforms including Azure and GCP

• 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

Imagine working in an environment where one line of code can make life easier for hundreds of millions of people. That’s what we do at Walmart Global Tech. We’re a team of software engineers, data scientists, cybersecurity experts, and service professionals within the world’s leading retailer who make an epic impact and are at the forefront of the next retail disruption.

People are why we innovate, and people power our innovations. We are people‑led and tech‑empowered. We train our team in the skillsets of the future and bring in experts like you to help us grow. We have roles for those chasing their first opportunity as well as those looking for the opportunity that will define their career. Here, you can kickstart a great career in tech, gain new skills and experience for virtually every industry, or leverage your expertise to innovate at scale, impact millions and reimagine the future of retail.

Beyond our great compensation package, you can receive incentive awards for performance. Other great perks include 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, and more.

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

Option 2:
At least 4 years of experience in systems and infrastructure engineering or related area at a technology, retail, or data‑driven company.

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…