Senior Systems and Infrastructure Engineer, Information Security

Position: (USA) Senior Systems and Infrastructure Engineer, Information Security
Position Summary...

The (USA) Senior Systems and Infrastructure Engineer, Information Security, is responsible for designing, implementing, and maintaining secure and scalable infrastructure solutions. This role involves evaluating system architectures, automating workflows, and ensuring compliance with security standards and disaster recovery requirements. The position requires expertise in configuration management, capacity planning, and risk assessment to support business objectives effectively. The engineer will collaborate across teams to optimize infrastructure performance, enhance security posture, and drive continuous improvements aligned with organizational goals and industry best practices.

About the team:

The Enterprise Security Engineering team focuses on designing, implementing, and maintaining robust cryptographic infrastructure to safeguard critical business systems and data. This team collaborates closely with security, infrastructure, cloud, networking, and application groups to deliver scalable, reliable, and secure Public Key Infrastructure (PKI) and Hardware Security Module (HSM) services. Members apply expertise in certificate lifecycle management, cryptographic key management, automation, and disaster recovery to support enterprise-wide security objectives.

The team is committed to innovation, operational excellence, and continuous improvement to protect and enhance the organization's technology environment.

What you'll do...

* Support Workload Identity efforts with X509 and JSON Web Tokens (JWT) authentication

* Support internal stakeholders with certificate enrollment workflows (SCEP, EST, ACME MSAE)

* Manage Certificate Authorities (Root CA, Issuing CA, and Subordinate CA infrastructures).

* Design, implement, and manage Hardware Security Module (HSM) platforms.

* Manage cryptographic key generation, storage, rotation, backup, recovery, and destruction processes.

* Support key management requirements for TLS, code signing, database encryption, tokenization, and application security.

* Collaborate on capacity planning to optimize resource utilization and forecast future infrastructure needs.

* Build and maintain highly available PKI and cryptographic infrastructures across on-premises and cloud environments.

* Integrate PKI services with enterprise identity, access management, and security platforms.

What you'll bring:

* Extensive experience in infrastructure security, scalability design, and configuration management within complex systems.

* Proficiency in disaster recovery planning and execution to ensure business continuity.

* Strong knowledge of automation tools and scripting languages to streamline workflows and deployments.

* Ability to develop and maintain system security plans and conduct risk and compliance reviews.

* Expertise in capacity management, optimizing IT resource utilization to meet current and future demands.

* Skilled in coding standards and secure software development practices across multiple platforms.

* Proven capability to analyze, prioritize, and resolve technical issues effectively.

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…