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Junior Cyber Intrusion Detection System Administrator - TS/SCI with Polygraph

General Dynamics Information Technology
Colorado Springs, United Statesfull_timeVerifiedPosted 6 Oct 2025
💰 $109,250/yr($80,750/yr$109,250/yr)

About the role

Type of Requisition:

Regular

Clearance Level Must Currently Possess:

Top Secret/SCI

Clearance Level Must Be Able to Obtain:

Top Secret SCI + Polygraph

Public Trust/Other Required:

None

Job Family:

Cyber and IT Risk Management

Job Qualifications:

Skills:

Cybersecurity, Firewalls, Signature-Based Detection

Certifications:

None

Experience:

2 + years of related experience

US Citizenship Required:

Yes

Job Description:

Own your career as a Cyber Intrusion Detection System Administrator at GDIT. Here, you’ll have the opportunity to build strong lines of cyber defense using cutting-edge technologies. Your work in cyber security at GDIT will have an impact on securing our clients’ missions and ensuring we anticipate the threats of tomorrow.

At GDIT, people are our differentiator. As a Cyber Intrusion Detection System Administrator you will help ensure today is safe and tomorrow is smarter.

HOW A CYBER INTRUSION DETECTION SYSTEM ADMINISTRATOR WILL MAKE AN IMPACT:

  • Monitor day-to-day operations of the sensors (Suricata, Palo Alto, and ArcSight) located at supporting customer's locations.

  • Perform Enterprise Defense Countermeasure (DC) activities and coordination with other government agencies to record and prepare incident reports and analysis methodology and results.

  • Monitor and analyze signature alerts from Intrusion Detection/Prevention Systems (IDS/IPS) for false positives.

  • Provide technical enforcement of organizational security policies.

  • Provide “tune-or-drop” recommendations towards the DC team’s Signature Lifecycle Review procedure.

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

  • Communicate with customers and teammates clearly and concisely. 

  • Maintain current knowledge of relevant technology as assigned.

  • Participate in special projects as required. 

  • Position is day shift but may require evening, weekend or shift-work (depending on operational tempo). 

WHAT YOU’LL NEED TO SUCCEED:

  • Bachelor's Degree and 2+ years of relevant experience, equivalent combinations of education, certifications, and experience will be considered.

  • DoD Approved Baseline 8570 IAT II (Sec+, CySA+, CND, etc.) and DoD Approved Baseline 8570 CSSP Infrastructure Support (CEH, CySA, CND, etc.) certifications required prior to start date.

  • GIAC Continuous Monitoring (GMON) or equivalent certification within first 120 days of employment is required.

  • Security Clearance Level: TS/SCI clearance and ability to pass a Polygraph.

  • Required Skills and Abilities:

    • Experience authoring Snort signatures.

    • Experience authoring Yara rules.

    • Experience with Perl Compatible Regular Expressions (PCRE).

  • Preferred Skills:

    • Experience in intrusion detection and prevention systems.

    • Proficient in network security technologies and protocols.

    • Dashboarding in Splunk.

    • Palo Alto Certification Next-Generation Firewall

Location: On Customer Site

  • Colorado Springs, CO

  • Bolling AFB, Washington D.C

  • Reston, VA


GDIT IS YOUR PLACE:

  • 401K with company match

  • Comprehensive health and wellness packages

  • Internal mobility team dedicated to helping you own your career

  • Professional growth opportunities including paid education and certifications

  • Cutting-edge technology you can learn from

  • Rest and recharge with paid vacation and holidays

The likely salary range for this position is $80,750 - $109,250. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours:

40

Travel Required:

Less than 10%

Telecommuting Options:

Onsite

Work Location:

USA CO Colorado Springs

Additional Work Locations:

USA DC Washington, USA VA Reston

Total Rewards at GDIT:

Our benefits package for all US-based employees inc

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Company

General Dynamics Information Technology

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