Experienced cyber security professionals focused on securing mission critical systems and data.


We have been providing cyber security expertise to the world’s most discerning customers about their mission critical systems and infrastructure for over two decades.


Our team consists of experts who have hands on experience executing detailed assessments of the entire spectrum of cyber systems.


VCS employees have been providing testing solutions to the defense community for over 25 years. Our technical work is focused around three main areas: providing innovative software solutions, performing offensive cyber testing on cyber-physical systems, and consulting for the DoD testing and evaluation community.

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Software Development

Our team of software experts specialize in developing custom software solutions that are scalable and provably correct. Our software products focus on testing tools for cyber and electronic warfare for the USAF and USN.

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Industrial Control Systems Testing

The VCS Testing As A Service (TAAS) team focuses on vulnerability assessments and penetration testing for industrial control systems. We support both government and commercial clients in providing greater insight into their cyber vulnerabilities, and creating more secure solutions.

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Cloud Security Testing

As Cloud based computing has expanded into the DoD to help augment and replace legacy applications and systems Vigilant has been integral in providing Cloud focused cyber security assessments that address the complexities of integrating legacy applications with new Cloud based tools.



Vigilant is fiercely committed to our culture and employees. We believe each person’s career should be an expression of who they are, and they should find purpose and meaning in how they choose to spend their time. To this end we are constantly searching for new and interesting problems to solve, and interesting people to help solve them. We strive to maximize flexibility and creative control so each employee can be empowered to solve problems in their own way, while also contributing to a culture that values team building and collaboration.

We are currently recruiting for the following positions:

Penetration Tester – Senior Level
Penetration Tester – Mid Level
Penetration Tester – Entry Level
Intern / Skillbridge Candidate