Penetration Tester

Leidos has a new and exciting opportunity for a Penetration Tester in our INTEL Sector’s Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!, This is a full-time position with theLeidosoffice in Huntsville, AL. The position consists of performing live penetration tests for customers and performing deep-dive preparatory analysis for any system under test. The position also includes recommending specific mitigation strategies to the customer for discovered vulnerabilities, and testing at multiple stages of the system development/acquisition lifecycle. This also includes red team tool development for use in stand-alone and network-connected systems. The positionis responsible forensuring survivability and resiliency of customer systems under test, andtimelydelivery of development updates and after-action reports after eachassessment.

• Bachelor’s degree in Cyber Security, Computer Science, Computer Engineering, Electrical Engineering, or related Technical Degree
• 4-8years of experience in penetration testing/red teams or related security field, or amaster’sdegree in a related field with +2year of experience.Experiencemay be consideredin lieu of adegree.
• Proficient with Linux (preferably Kali, Parrot, or similar distros) and Windows Operating systems
• Experience with using scripting languages such as bash, python,etc
• Hands-on experience performing penetration tests, vulnerability assessments, and security analysis on enterprise systems
• Proven experience with web application penetration testing, including OWASP Top 10 vulnerabilities
• Experience conducting cloud security assessments (AWS, Azure, GCP) and cloud-native penetration testing
• Familiarity with API security testing (REST, SOAP,GraphQL) and authentication/authorization mechanisms
• Strong understanding of TCP/IP network architecture, protocols, and network security concepts
• Candidate must be located in Huntsville, AL area or be willing torelocateto the Huntsville, AL area as this is an ON-SITE Position.
• Candidate must be a US CITIZEN and be able to obtain a TS/SCI security clearance.

Preferred Qualifications:

Tools & Technical Skills:

• Extensive experience with reconnaissance and scanning tools (Nmap,Nikto, Burp Suite, OWASP ZAP, etc.)

• Extensive experience with exploitation frameworks and tools (Metasploit, Cobalt Strike, Empire, etc.)

*Demonstratedability to develop custom exploits and automation scripts using Python, Bash, PowerShell, or similar languages

• Experience with cloud security tools and methodologies (ScoutSuite, Prowler, Pacu, etc.)

Professional Experience:

• Prior Department of War (DoW) experience or work with government/defense sector clients

Certifications & Continuous Learning:

• Completion of or active pursuit of industry certifications such as OSCP, GPEN, GWAPT, GCIH, GSEC, CPTS, CEH, or equivalent technical certifications

• RF security experience or amateur (HAM) radio certification is a plus

$87,100.00 - $157,450.00 / yr paid time off, paid holidays, 401(k) United States, Alabama, Huntsville Sep 02, 2026, 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 at www.leidos.com/careers/pay-benefits.

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:September 1, 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 $87,100.00 - $157,450.00, Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.