> Markdown version of [/jobs/ext/2642932-usa-systems-and-infrastructure-engineer-iii-information-security](https://www.wearedevelopers.com/jobs/ext/2642932-usa-systems-and-infrastructure-engineer-iii-information-security). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # (USA) Systems and Infrastructure Engineer III, Information Security - **Company:** Wal-Mart Stores, Inc. - **Location:** Sunnyvale, CA, United States - **Experience:** Experienced - **Salary:** $117,000.0 - $234,000.0 - **Contract:** Permanent contract - **Skills:** Adobe Analytics, Web Accessibility, Application Firewall, Microsoft Azure, Content Delivery Networks, Cloud Computing, Cyber Security, Information Systems, DDoS Mitigation, Domain Name System (DNS), Internet Protocol Security (IP SEC), Network Security, Reliability Engineering, ArcSight SIEM Tool, Web Application Security, TCP/IP, Web Content Accessibility Guidelines, Scripting, Transport Layer Security, Software Security, Firewalls (Computer Science), Information Technology, Data Analytics, Kibana, Ddos, Splunk - **Published:** August 2, 2026 - **Apply:** https://dejobs.org/x/x/8B9CFFAACCF848E59FDDCF64C75D2DC5/job/ ## About the Role * 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 and solid foundation in key security domains: application security, network security, architecture * Knowledge of network and security tools and protocols, including Firewalls and DNS * Strong analytical, problem-solving, and interpersonal communication skills, 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. ## Description 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. About the team: The Edge Ingress Security team plays a critical role in protecting our global eCommerce platforms from a wide range of online threats. From defending against web-based and DDoS attacks to managing unwanted scripted traffic and fraud, we are the gatekeepers of secure digital access. We collaborate closely with network, infrastructure, and product teams to ensure that every ingress flow-across all web properties-is secure, resilient, and adaptive to evolving threats. Our team thrives on solving complex security challenges in a fast-paced, high-impact environment. 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 ## Related Videos - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Debug a Kubernetes Operator](https://www.wearedevelopers.com/videos/487-debug-a-kubernetes-operator) - [Our journey with Spring Boot in a microservice architecture](https://www.wearedevelopers.com/videos/511-our-journey-with-spring-boot-in-a-microservice-architecture) - [WeAreDevelopers LIVE - Chrome for Sale? 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