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Cyber Security Engineer (Penetration Tester)

CACI International Inc
148 ABERDEEN PROVING GROUND MD (ABERDEEN PROVING GROUND), United States, United Statesfull_timeVerifiedPosted 3 Jun 2025
💰 $173,900/yr($82,700/yr$173,900/yr)

About the role

Cyber Security Engineer (Penetration Tester)

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: Secret

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

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The Opportunity:
CACI seeks a motivated, mid-level Cyber Security Engineer to support the C5ISR Center at Aberdeen Proving Ground, MD. You will join a team of cyber security engineers to perform vulnerability assessments for the Cyber Security (CS) Division at the Engineering and Services Innovation (ESI) Directorate.

Responsibilities:

  • Work on a small team of cyber engineers to perform security assessments in search of vulnerabilities and identify mitigations.

  • Conduct vulnerability assessments on web applications, networked devices, standalone software products, and other technologies as assigned using the penetration testing life cycle.

  • Maintain test efficacy by identifying and applying new testing tools and techniques.

  • Conduct research and development efforts to explore current and emerging technologies.

  • Travel up to 10% of the time..


Qualifications:

Required: 

  • An active DoD Secret and obtain TS/SCI clearance.

  • All work is performed on site at APG, MD. Telework is not available.

  • DoD 8570 IAT Level II certification (Security+ or equivalent).

  • Must have 5+ years of experience with offensive security/penetration testing tools and methodologies to assess technologies for vulnerabilities and exploits at the network and application levels.

  • Intermediate knowledge of Linux and Windows internals.

  • Thorough technical understanding of networking protocols, hardware, and software.

  • Ability to interpret network traffic to understand communications and identify security vulnerabilities using Wireshark, Burp Suite, etc.

  • Familiarity with hypervisor virtualization (VMware, VirtualBox).

  • Ability to effectively communicate through written and verbal means, to include conveying technical information to team members, leadership, and clients.

  • Must be able to work in a lab setting.

  • Work efficiently both individually and as a team.

Desired:

  • An active DoD TS/SCI clearance.

  • OSCP or equivalent certification.

  • Basic cryptography knowledge.

  • Basic programming / scripting experience (Python, Java, C/C++, bash).

  • Code analysis and reverse engineering experience.

  • Familiarity with COTS/GOTS radios, SDRs, and RF concepts.

This position is contingent on funding and may not be filled immediately. However, this position is representative of positions within CACI that are consistently available. Individuals who apply may also be considered for other positions at CACI.

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What You Can Expect:

 

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

 

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy. 

 

Your potential is limitless. So is ours.

Learn more about CACI here.

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Company

CACI International Inc

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