Penetration Testing Engineer III

Role Summary

The (USA) Penetration Testing Engineer III plays a critical role in identifying and assessing security vulnerabilities across various systems and networks. This position involves conducting comprehensive security testing, evaluating controls, and recommending effective mitigation strategies to reduce cyber risks. The role requires collaboration with stakeholders to understand technical requirements and support the implementation of robust security measures. The engineer applies advanced knowledge of security principles, frameworks, and testing methodologies to enhance organizational resilience against evolving cyber threats while ensuring alignment with established risk management policies and business objectives.

Walmart’s Penetration Testing team safeguards the technology behind the world’s largest retailer by proactively identifying and validating security vulnerabilities. The team performs comprehensive security assessments across cloud platforms, applications, APIs, mobile solutions, IoT devices, hardware, firmware, and enterprise systems. By delivering actionable recommendations, the team strengthens Walmart’s security posture. Combining advanced technical expertise with effective collaboration and communication, the team ensures the confidentiality, integrity, and availability of critical systems supporting millions of customers and associates globally.

This role requires skills in penetration testing, security controls, vulnerability management, cyber security, and secure coding.

• Conduct comprehensive penetration testing engagements to identify and assess security vulnerabilities across systems and networks.
• Evaluate security controls using established cybersecurity principles and frameworks to validate their effectiveness.
• Recommend prioritized remediation and mitigation strategies based on risk severity and business impact.
• Collaborate with stakeholders to analyze technical requirements and support cyber risk management initiatives.
• Maintain detailed documentation of testing results, network performance metrics, and security assessments.
• Assist in designing secure network and infrastructure components aligned with industry standards and organizational needs.
• Stay current with emerging cyber threats and contribute to continuous improvement of security practices.

• Proven expertise in penetration testing, including security testing techniques and vulnerability identification.
• Strong knowledge of cybersecurity principles, frameworks, and risk management methodologies.
• Experience assessing security controls and recommending mitigation strategies based on risk severity.
• Proficiency with scripting, operating systems, networking, and cloud computing environments.
• Ability to analyze business and technical requirements to define testing scopes and priorities.
• Familiarity with secure coding standards and vulnerability management practices.
• Effective collaboration skills to engage with stakeholders and support cyber risk management initiatives.

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…