Cyber Intrusion Detection System Administrator - TS/SCI with Polygraph

Public Trust: None

Requisition Type: Regular

Your Impact

Own your opportunity to serve as a critical component of our nation’s safety and security. Make an impact by using your expertise to protect our country from threats.

Job Description

CYBERSECURITY ANALYST PRINCIPAL

Advance your career while impacting our national security in cyber as a Cybersecurity Analyst Principal at GDIT. Here, technologists have many paths to grow a meaningful career supporting cyber missions and operations across the federal government.

MEANINGFUL WORK AND PERSONAL IMPACT
As a Cybersecurity Analyst Principal, the work you’ll do at GDIT will be impactful to the mission of DIA. You will play a crucial role in helping to protect our customers systems. Networks, and data.

● Lead/Manage/Support our customers cyber tool stack and ability to implement defensive rules.

● Collaborate with other government agencies to record and prepare incident reports and analysis methodology and results.

● Provide insight to Detection and Response teams on signature functionality and providing signature tuning as needed.

●Monitoring and analyzing signature alerts from Intrusion Detection/Prevention Systems (IDS/IPS) for false positives.

● Creating Splunk Dashboards

● Provide guidance and work leadership to less-experienced staff

●Utilize Splunk, Snort signatures, Regular Expressions, Suricata, Palo Alto Firewalls, Fidelis, etc

●Experience using advanced data analytics tools and techniques, such as Splunk, SQL, Python, and statistical modeling.

●Utilize Splunk, Snort signatures, Regular Expressions, Suricata, Palo Alto Firewalls, Fidelis, etc

WHAT YOU’LL NEED TO SUCCEED
Bring your cyber expertise and drive for innovation to GDIT. The Cybersecurity Analyst Principal must have:
● Education: BS Degree or equivalent experience
● Experience: 8+ years of related experience
● Technical skills: experience with Perl Compatible Regular Expressions (PCRE), authoring Yara rules and snort signatures
● Security clearance level: TS SCI / with Polygraph
● US citizenship required
● Role requirements: work is performed directly at customer site.

GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.
● Growth: AI-powered career tool that identifies career steps and learning opportunities
● Support: An internal mobility team focused on helping you achieve your career goals
● Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
● Community: Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY
Explore a career in cyber at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your focus on defending and protecting what matters.

#GDITCareers

#WeAreGDIT

#VA_2026Alumni

#CO_2026Alumni

#JET

Work Requirements

Years of Experience

8 + years of related experience

* may vary based on technical training, certification(s), or degree

Certification

Travel Required

Less than 10%

Citizenship

U.S. Citizenship Required