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Systems and Infrastructure Engineer III, Information Security

Walmart
Full Timemid
Greenland, Arkansas, USPosted February 19, 2026

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Job Description

Position Summary...

What you'll do...Walmart is searching for an experienced IoT/OT practitioner to join our team and continue our mission of securing a large scale and diverse businesses environment. As an IoT/OT Security (Distinguished, Principle, Staff, Senior) Engineer, you will be responsible for designing and developing solutions that secure the IoT/OT solutions supporting the enterprise at large. The environment will include a variety of sensors, cameras, robots, printers, SCADA controllers, and industrial automation platforms. In addition to ensuring the security and compliance of these systems and devices, the role will be responsible for providing guidance to other teams and stakeholders.

About Team:

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

What you will do:

  • Research, design, test, and document IoT/OT solution patterns to integrate with current and future solutions sets.
  • Implement security controls and best practices for IoT/OT systems and devices, such as encryption, authentication, authorization, logging, patching, etc.
  • Collaborate with vulnerability assessment and penetration testing teams to identify risks, findings, and remediations across the IoT/OT landscape.
  • Collaborate with other teams and stakeholders to ensure the security and compliance of IoT/OT systems/devices, and provide training and awareness as needed.
  • Stay updated on the latest trends and developments in IoT/OT security and evaluate and recommend innovative technologies and solutions.

What you'll bring:

  • Bachelor’s degree in computer science, Engineering, or related field, or equivalent work experience.
  • 5+ years of experience in IoT/OT security, or related field.
  • Experience with IoT/OT protocols, standards, and platforms, such as MQTT, CoAP, OPC UA, Azure IoT, etc.
  • Experience with IoT/OT devices, sensors, and hardware, such as Arduino, Raspberry Pi, PLCs, RTUs, etc.
  • Experience with security tools and frameworks, such as Nmap, Metasploit, Burp Suite, OWASP, etc.
  • Experience with scripting and programming languages, such as Python, C, C++, Java, etc.

About Walmart Global Tech

Imagine working in an environment where one line of code can make life easier for hundreds of millions of people. That is what we do at Walmart Global Tech. We are a team of software engineers, data scientists, cybersecurity expert’s, and service professionals within the world’s leading retailers who make an epic impact and are at the forefront of the next retail disruption. People are why we innovate, and people power our innovations. We are people-led and tech-empowered. We train our team in the skillsets of the future and bring in experts like you to help us grow. We have roles for those chasing their first opportunity as well as those looking for the opportunity that will define their career. Here, you can kickstart a distinguished career in tech, gain new skills and experience for every industry, or leverage your expertise to innovate on a scale, impact millions, and reimagine the future of retail. Walmart’s culture is a competitive advantage, and it is fostered by being together. Working together in person allows us to collaborate, align quickly and innovate with greater speed. We use our campuses to create purposeful connection rooted in deepening understanding and investing in the development of our associates.

Our hubs: Walmart is a global company with offices across the United States and around the world. Our global headquarters is in Bentonville, Arkansas, with primary hubs in the San Francisco Bay area and New York/New Jersey.

Benefits

Benefits: Beyond our great compensation package, you can receive incentive awards for your performance. Other great benefits include 401(k) match, stock purchase plan, paid maternity and parental leave, PTO, multiple health plans, and much more.

Equal Opportunity Employer:

Walmart, Inc. is an Equal Opportunity Employer – By Choice. We believe we are best equipped to help our associates, customers, and the communities we serve live better when we really know them. That means understanding, respecting, and valuing unique styles, experiences, identities, ideas, and opinions – while being inclusive of all people.

The above information has been designed to indicate the general nature and level of work performed in the role. It is not designed to contain or be interpreted as a comprehensive inventory of all responsibilities and qualifications required by employees assigned to this job. The full Job Description can be made available as part of the hiring process. At Walmart, we offer competit

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