Full Description

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. If this sounds like the kind of environment where you can thrive, keep reading! The Digital Modernization Sector brings together our digital transformation and IT programs, allowing us to better serve our customers through scale and repeatability. The DHS Chief Information Security Officer Directorate (CISOD) ensures the Department’s compliance with all applicable security regulations—including FISMA, OMB circulars, Executive Orders, federal laws, directives, and policies—while maintaining a secure and trusted computing environment. Information security is a core mission enabler, essential to DHS operations and public service delivery. We are seeking a Senior Penetration Tester to support offensive security operations across DHS applications, networks, and enterprise environments. The ideal candidate brings deep technical expertise, hands-on experience in vulnerability research and exploitation, and a collaborative mindset suited for a high-performing cybersecurity team. Primary Responsibilities Conduct penetration testing activities aligned with DHS and industry best practices. Perform web application, network, and infrastructure assessments using commercial and open-source tools. Execute testing operations safely and in accordance with defined operational guidelines. Produce detailed reports outlining findings and actionable remediation recommendations. Partner with SOC, engineering, and defensive security teams to validate and remediate vulnerabilities. Support tool development, methodology improvements, and team-wide knowledge sharing. Required Qualifications BS Degree with 12-15 years. Master’s degree in a related field with 12 years of professional experience At least 3 years of experience in one or more of the following: Incident detection and response Malware analysis Cyber forensics Proficiency with at least three of the following tools: Kali Linux Metasploit Burp Suite Cobalt Strike Tenable Nessus WebInspect Scuba AppDetective One or more relevant certifications, such as: GPEN, GWAPT, GISF, GXPN, OSCP, OSCE, OSWP, OSEE, CISSP, or CEH. U.S. Citizenship required; must be able to obtain a Top Secret clearance with SCI eligibility and DHS EOD. If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: January 15, 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 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. Leidos Leidos is a Fortune 500® innovation company rapidly addressing the world's most vexing challenges in national security and health. The company's global workforce of 47,000 collaborates to create smarter technology solutions for customers in heavily regulated industries. Headquartered in Reston, Virginia, Leidos reported annual revenue of approximately $15.4 billion for the fiscal year ended December 29, 2023. For more information visit . Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here. Securing Your Data Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to . Commitment and Diversity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.