Penetration Tester

Leidos Holding$87K — $157K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Cyber Security, Computer Science, Computer Engineering, Electrical Engineering, or related Technical Degree
  • 4-8 years of experience in penetration testing/red teams or related security field; or a master's degree with +2 years of experience
  • Proficient with Linux and Windows Operating systems
  • Experience using scripting languages like bash and Python
  • Hands-on experience with penetration tests and security analysis on enterprise systems
  • Proven experience with web application penetration testing involving OWASP Top 10 vulnerabilities
  • Experience with cloud security assessments (AWS, Azure, GCP) and related penetration testing
  • Strong understanding of TCP/IP network architecture and protocols.

Responsibilities

  • Perform live penetration tests and deep-dive analysis for customer systems
  • Recommend mitigation strategies for discovered vulnerabilities
  • Test systems at multiple stages of the development/acquisition lifecycle
  • Develop red team tools for stand-alone and network-connected systems
  • Ensure survivability and resiliency of customer systems under test
  • Deliver development updates and after-action reports after each assessment.

Benefits

  • Opportunity to work with cutting-edge cybersecurity technologies
  • Engagement in complex real-world security challenges
  • Collaborative environment with professionals in the defense sector
  • Professional development through ongoing certifications and training opportunities
  • Potential for relocation support to Huntsville, AL for the right candidate.
Full Job Description


Primary Responsibilities :

This is a full-time position with the Leidos office 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 position is responsible for ensuring survivability and resiliency of customer systems under test, and timely delivery of development updates and after-action reports after each assessment.

Required Qualifications:
  • Bachelor's degree in Cyber Security, Computer Science, Computer Engineering, Electrical Engineering, or related Technical Degree
  • 4-8 years of experience in penetration testing/red teams or related security field, or a master's degree in a related field with +2 year of experience. Experience may be considered in lieu of a degree.
  • 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 to relocate to 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.)
• Demonstrated ability 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

Original Posting:
September 1, 2026

Pay Range:
Pay Range $87,100.00 - $157,450.00

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.

About Leidos Holding

Leidos Holding Careers

Joining Leidos Holding presents an unparalleled opportunity to advance one's career with a leader in innovation and technology. The company offers a plethora of job opportunities aimed at fostering professional growth and development in a diverse and inclusive environment.

Explore Career Opportunities

Leidos Holding is actively seeking skilled professionals who are passionate about leveraging their expertise to drive innovation and leadership in their fields. With a variety of open positions, Leidos Holding provides a platform for individuals to challenge themselves in a dynamic work environment.

Innovation and Professional Growth

At Leidos Holding, innovation is at the core of everything they do. Employees are encouraged to think creatively and push boundaries. The company supports this drive for innovation through comprehensive professional development and diversity training programs that are designed to enhance skills and foster leadership.

Commitment to Diversity and Inclusion

Leidos Holding is committed to creating a workplace where diversity is not only recognized but celebrated. With a culture that values and promotes diversity, Leidos Holding ensures that all team members have the opportunity to contribute, learn, and grow.

Internship Programs

For those starting their career, Leidos Holding offers internship programs that provide a robust foundation in the industry. Internships are a great way to develop essential skills, gain valuable work experience, and build professional networks.

Benefits and Culture

Employees at Leidos Holding enjoy a range of benefits designed to support their professional and personal lives. The company culture is built on a foundation of respect and integrity, providing a supportive and collaborative environment where every team member is valued.

Join the Team

Leidos Holding is hiring! Explore job opportunities that match your skills and interests. Leidos Holding looks for driven, curious, and innovative individuals to join their team. Positions are available across various disciplines and experience levels.

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To prepare for an interview at Leidos Holding, candidates should familiarize themselves with the company's missions and values, update their resumes, and be ready to discuss how their background and skills align with the position they are applying for.

Networking and Career Advancement

Leidos Holding encourages its employees to engage in networking within the company to discover new opportunities for career advancement. The leadership team at Leidos Holding is dedicated to supporting employees in their career paths with ample opportunities for networking and growth.

Explore Leidos Holding Jobs and Careers

Discover the exciting career opportunities at Leidos Holding today. With a commitment to employee growth, innovation, and diversity, Leidos Holding is the perfect place to advance your career. Check out the latest job listings and find your perfect fit at Leidos Holding.

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