Penetration Tester

About the role

Leidos is seeking a Penetration Tester to support an enterprise IT program. We are looking for a cyber security professional to conduct penetration testing and ethical hacking, to target, assess, and exploit risk and vulnerabilities of information systems. This candidate is expected to have hands on penetration testing experience. In addition to technical skills, the candidate should be a self-starter who doesn't always need to be provided direction. Critical thinking skills are a must; the Customer wants someone who can come up with ideas and investigate to validate those ideas as well as have a curiosity on the unknown and continuously push for outcomes. Primary Responsibilities: This team provides a highly technical and in-depth penetration testing service, in support of enterprise cyber security equities. The role requires support specializing in penetration testing and ethical hacking, to target, assess, and exploit risk and vulnerabilities of information systems. The intent is to provide senior decision makers with documented and actionable data to aid in making strategic investment decisions. The team will document all identified system risks, planned test procedures, and results; perform analyses of vulnerabilities identified during testing; and review program-level documentation (e.g., requirements specification, system architecture, design documents, test plans, security plans, etc.). They will recommend changes to program-level documentation with an eye to reducing system vulnerabilities, create and document penetration testing plans and procedures, and approved testing plans and procedures to conduct hands-on penetration testing. The team will also analyze test results, document risks, and recommend countermeasures to uncovered risks; participate or lead technical exchange meetings and application review boards; document action items and results from technical exchange meetings and application review boards; and brief management on the status of action items and results of activities.

Requirements

• Must have an active TS/SCI with Poly to be considered
• Experience in cyber security or related IT field
• Experience with cyber penetration testing
• Experience applying computer attack methods and system exploitation techniques
• Working knowledge of cyber security principles for Linux, Windows, and virtual platforms
• Experience designing, testing, or implementing IT security architecture
• Experience performing network security analysis
• Experience analyzing network architectures
• Experience using network management tools
• Experience leveraging adversarial tactics to conduct hands-on security testing
• Experience developing risk management methodologies
• Experience analyzing test results to develop risk and threat mitigation plans
• Experience testing or reviewing system configuration, development, and design specifically around enterprise systems and hypervisors
• Experience designing, testing, or implementing complex Windows installations
• Experience participating in public and private information security groups and organizations
• Experience communicating vulnerability results and risk posture to senior executives
• Experience researching, evaluating, and developing security policies and guidance
• Experience performing complex technical tasks with minimal direction
• Original Posting:
• June 26, 2026
• For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
• Pay Range:
• Pay Range $131,300.00 - $237,350.00
• About Leidos
• Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, wi

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