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Salary
$94k – $198k per year
Location
In office (Chantilly)
Seniority
Senior · 7+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 28, 2026. First seen by Alion on Feb 28, 2026. CACI International scores D on the Alion truth index.

Overview
Company
Impact
Profile match
CACI International is an American technology company founded in 1962 that works almost entirely for United States defence, intelligence and federal civilian agencies. It has moved from being a conventional IT services contractor toward supplying its own technology, with a substantial expeditionary electronic warfare and signals intelligence product line, photonics and optical communications for space, and secure network modernisation. Headquartered in Reston, Virginia, the company employs more than twenty thousand people, the majority holding security clearances, and has grown through a steady programme of acquisitions that add differentiated technology rather than headcount alone.
Job Title: Cyber Network Security EngineerJob Category: EngineeringTime Type: Full timeMinimum Clearance Required to Start: TS/SCI with PolygraphEmployee Type: RegularPercentage of Travel Required: NoneType of Travel: None* * *

The Opportunity:

You will support our work automating cybersecurity operations, emulating adversary behavior, and improving the defensive postures of our sponsors. You’ll evaluate tools and methodologies, assess adversary intent, develop cybersecurity analytics and other techniques to thwart or detect attacks, develop approaches to automate cybersecurity operations, and engage in research to improve the state of the practice.

Responsibilities:

  • Work closely with red-team experts to evaluate IT environments and identify security goals, vulnerabilities, objectives, and requirements
  • Perform cybersecurity operations testing, and develop improvements to doing so, based on real adversary behavior described in adversary emulation plans
  • Evaluate the efficacy of existing detection mechanisms, analytics, and mitigations
  • Identify gaps in visibility, data, tools, and process
  • Address gaps within defenses by improving systems and processes
  • Develop approaches to automating cybersecurity operations, reducing cost and increasing efficiency
  • Solve cyber problems through operations, data-driven analytics, and development
  • Leverage research, frameworks, and best practices to improve the defensive posture of our sponsors

Qualifications:

Required:

  • Approximately seven years of experience as an infrastructure operator
  • Proficiency working in a Linux environment - Centos, Ubuntu, Fedora, Solaris, Backtrack
  • Database experience, to include writing complex queries and modifying schemas (e.g. Oracle, MySQL).
  • Experience in a cyber-security role
  • Experience configuring network devices (e.g. routers, switches, etc.).
  • Experience performing network packet inspection, traffic analysis, performance characterization (e.g. Wireshark, TCPdump, etc.).
  • Understanding of network/cyber security, penetration testing, and information security best practices
  • Understanding of Linux network security tools - (e.g. Metasploit, netcat, nmap, etc.).
  • Experience building virtual infrastructure - (e.g. vSphere).
  • Experience using scripting languages for automation, parsing data sets, and network monitoring (e.g. bash, Perl, Python, etc.).
  • Experience in either the design, implementation, procurement and maintenance of network infrastructure
  • Active TS/SCI with required polygraph
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.

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.

Pay Range:

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$94,400 - $198,200

CACI is an Equal Opportunity Employer.All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.

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