(USA) Systems and Infrastructure Engineer III, Information Security

Walmart•Herndon, VA

13d•Onsite

About The Position

The Systems and Infrastructure Engineer III, Information Security, plays a critical role in designing, implementing, and maintaining secure and scalable infrastructure solutions. This position involves developing modular system architectures, automating workflows, and ensuring compliance with security standards and risk management frameworks. The role requires expertise in infrastructure maintenance, capacity planning, and configuration management to support business objectives effectively. The engineer collaborates across teams to deliver robust, high-quality solutions while adhering to coding and security policies, contributing to continuous improvement and operational excellence within the information security domain. The Information Security team protects customer data by implementing advanced security measures across a leading e-commerce platform. This team tackles complex cybersecurity challenges through technical expertise and innovation. The Cryptography group modernizes cryptographic operations to enhance security agility at scale. Team members collaborate to design, implement, and maintain resilient security solutions, leveraging skills in infrastructure security, automation, and software engineering. Their work is vital in maintaining trust and safety within Walmart’s digital ecosystem, ensuring a secure and reliable shopping experience for customers worldwide.

Requirements

3–5 years of software engineering experience, including SRE, platform engineering, or infrastructure-focused role
Experience with certificate lifecycle management, CLM platforms, PKI, and TLS certificate troubleshooting
Strong systems thinking, with a deep understanding of infrastructure architecture, distributed workflows, and building resilient, automated platforms at enterprise scale
A systems-first mindset, with the ability to think in terms of infrastructure boundaries, data flows, and platform capabilities beyond application logic alone
Proficiency in Java, Python or Go
Familiarity with observability concepts, including metrics, logs, and traces
Experience with cloud platforms such as GCP or Azure, and containerized environments
Strong understanding of Cryptographic protocols (like TLS, SSH), algorithms and their implementations
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.
4 years’ experience in systems and infrastructure engineering or related area at a technology, retail, or data-driven company.

Nice To Haves

Certification in Security+, GISF, CISSP, CCSP, or GSEC
Master’s degree in Computer Science, Information Technology, Engineering, Information Systems, Cybersecurity, or related area
Knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards, assistive technologies, and integrating digital accessibility seamlessly.
Knowledge of accessibility best practices

Responsibilities

Help shape and execute standards, reference architectures, and best practices for cryptography, PKI, and key management across the enterprise
Drive modernization of certificate lifecycle management by building internal tools, advancing automation, and delivering analytics that improve visibility, reliability, and operational efficiency
Partner closely with platform, infrastructure, and application teams to solve complex pain points and deliver scalable tooling solutions
Apply broad technical depth to deliver well-documented, production-ready changes that minimize operational risk and improve service resilience
Influence Information Security stakeholders by communicating standards, guidance, and best practices that raise the bar for secure and reliable platform operations