USA) Senior Systems and Infrastructure Engineer, Information Security

Position Summary...PKI/HSM is responsible for engineering, automating, and supporting Walmart's enterprise cryptographic infrastructure, including Public Key Infrastructure (PKI), Certificate Lifecycle Management (CLM), and Hardware Security Modules (HSMs). This role designs secure, scalable cryptographic services, enables certificate automation and workload identity, manages enterprise key infrastructure, and partners with security, cloud, infrastructure, and application teams to protect critical business systems while driving modernization and operational excellence.

About the team:

The team is dedicated to designing, implementing, and maintaining secure, scalable cryptographic infrastructure that supports enterprise business objectives. It leads modernization efforts for Public Key Infrastructure (PKI), Hardware Security Modules (HSM), and certificate lifecycle management across on-premises and cloud environments. Collaborating closely with security, infrastructure, networking, and application teams, the group emphasizes automation, operational efficiency, and compliance with security standards. Members contribute to developing innovative solutions, ensuring high availability and reliability of cryptographic services while mentoring peers and driving continuous improvement in infrastructure security and automation practices.

• Design, implement, and support enterprise PKI, Certificate Lifecycle Management (CLM), and Hardware Security Module (HSM) solutions.
• Automate certificate and cryptographic key management using scripting, Infrastructure-as-Code, and CI/CD tools.
• Partner with security, infrastructure, cloud, and application teams to integrate enterprise cryptographic services.
• Drive modernization, certificate automation, workload identity, and cryptographic agility initiatives.
• Monitor, troubleshoot, and optimize PKI and HSM platforms to ensure availability, security, and performance.
• Collaborate on capacity planning to optimize resource utilization and forecast future infrastructure needs.
• Troubleshoot and resolve infrastructure issues, escalating as necessary to maintain system integrity.
• Apply security standards and best practices across infrastructure components and automation processes.

• Extensive experience in infrastructure security, scalability design, and disaster recovery methodologies.
• Proficiency with automation tools and scripting languages to streamline workflows and deployments.
• Strong knowledge of configuration management and infrastructure maintenance best practices.
• Expertise in public key infrastructure, certificate authority management, and hardware security modules.
• Ability to design modular, extensible systems aligned with security standards and compliance frameworks.
• Skilled in capacity management, performance optimization, and resource rightsizing.
• Familiarity with CI/CD pipelines, telemetry implementation, and secure software development lifecycle practices.

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. The amount you receive depends on your job classification and length of employment. It will meet or exceed the requirements of paid sick leave laws, where applicable. For information about PTO, see  Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities.

Programs range from high school completion to bachelor's degrees, including English Language Learning and short-form certificates. Tuition, books, and fees are completely paid for by Walmart.

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.

The annual salary range for this position is $90,000.00 - $. Additional compensation includes annual or quarterly performance bonuses. Additional compensation for certain positions may also include :

• Stock

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 3years’ experience in systems and infrastructure engineering or…