Systems and Infrastructure Engineer III, Information Security-Web Security

Walmart

5d•$108,000 - $234,000

About The Position

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. 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. At Walmart, we prioritize innovation and data security. Our team is dedicated to maintaining a secure operating environment and preserving the trust of our customers, associates, and stakeholders. We combine a range of services and expertise to prevent fraud, detect threats, and manage digital risk and access. Our focus is on mitigating attack risks, securing cloud transformation, and fostering a culture of security and reliability within our team

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
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.
4 years’ experience in systems and infrastructure engineering or related area at a technology, retail, or data-driven company.

Nice To Haves

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
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.

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

Benefits

Beyond our great compensation package, you can receive incentive awards for your performance.
Other great perks include 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, and much more.
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.
You will also receive PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes.
Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities.
Tuition, books, and fees are completely paid for by Walmart.