(USA) Systems and Infrastructure Engineer III, Information Security

About the role

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.

What you'll do

• 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

What you'll bring

• 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
• A 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
• A strong understanding of Cryptographic protocols (like TLS, SSH), algorithms and their implementations

Minimum Qualifications

• 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 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.

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.

Additional Information

About the team: 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.

Pay

The annual salary range for this position is $108,000.00 - $216,000.00 in Herndon, Virginia US-10710 and $90,000.00 - $180,000.00 in Bentonville, Arkansas US-09050. Additional compensation includes annual or quarterly performance bonuses. Additional compensation for certain positions may also include: Stock.