(USA) Systems and Infrastructure Engineer III, Information Security

About the role

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.

Responsibilities

• 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

Requirements

• 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

Preferred Qualifications

• 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
• Certification in Security+, GISF, CISSP, CCSP, or GSEC
• Master’s degree in Computer Science, Information Technology, Engineering, Information Systems, Cybersecurity, or related area
• 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

Minimum Qualifications

• Option 1: Bachelor's degree in computer science, information technology, engineering, information systems, cybersecurity, or related area and 2 years’ 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.

Benefits

• Competitive pay as well as performance-based bonus awards
• Health benefits including medical, vision, and dental coverage
• Financial benefits including 401(k), stock purchase, and company-paid life insurance
• Paid time off benefits including PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting
• Short-term and 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, covering tuition, books, and fees for high school completion, bachelor's degrees, English Language Learning, and short-form certificates

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to a specific plan or program terms.

Pay

Sunnyvale, California: The annual salary range for this position is $117,000.00 - $234,000.00

Herndon, Virginia: The annual salary range for this position is $108,000.00 - $216,000.00

Additional compensation includes annual or quarterly performance bonuses. Additional compensation for certain positions may also include stock.