Senior Cyber Incident Responder (TS/SCI)

G2IT, LLC.; Suitland (MD); On-site; USD 130,000 - 190,000; Full time

Job summary

G2IT, LLC. is seeking an experienced Incident Responder to join a mission-focused cyber defense team supporting the Office of Naval Intelligence (ONI) at HGCC in Suitland, MD.

You will act as a digital first responder to defend maritime intelligence networks and investigate incidents across the response lifecycle. You will work with cybersecurity, intelligence, and investigative partners to protect TS/SCI environments, handling escalations, ESAF submissions, DLP monitoring, and coordination with

Qualifications

• Bachelor's degree in Cybersecurity, IT, IA, or related field desired; Master's preferred.
• 15+ years of relevant professional experience without a degree.
• Active TS/SCI security clearance.
• 10 years of concentrated experience in the CND discipline.
• 5+ years of professional experience monitoring and investigating alerts from cybersecurity tools.
• Experience with SIEM systems such as Splunk and Elastic.
• Experience with NIDPS, such as Cisco FirePower and Palo Alto NGFW, plus host-based tools Trellix ePO, Defender, and Tanium.
• Knowledge of scripting languages: Python, Perl, Ruby, JavaScript, PowerShell, C, C++, and Java.
• Knowledge of penetration testing and red team tools: Kali, SamuraiWTF, Nmap, Burp Suite, sqlmap, Metasploit.
• Knowledge of ticketing systems, report writing, and intelligence gathering, analysis, and dissemination techniques.

Responsibilities

• Perform all phases of the incident response lifecycle, including detection, analysis, containment, eradication, and recovery.
• Receive and act on escalations from Tier 1 analysts, conduct spillage response for TS/SCI networks (JWICS, ATLAS).
• Receive and respond to incident notifications via phone and email.
• Prepare and submit ESAFs to the NNWC Electronic Spillage Center.
• Monitor DLP outputs for classified code words and spillage indicators.
• Coordinate with SSOs, JAG, ONI ISSM, Hopper ISSM, CNI, NAVNETWARCOM, IC SCC, NCDOC, NCIS and others.
• Maintain detailed incident documentation and timelines.
• Participate in incident response meetings and after-action reviews.
• Support execution and evaluation of annual security exercises.

Skills

Incident response

SIEM

NIDPS

Python

PowerShell

C/C++/Java

Cybersecurity analysis

DLP monitoring

Education

Bachelor's degree in Cybersecurity/IT/IA

Master's degree preferred

Tools

Splunk

Elastic

Cisco FirePower

Palo Alto NGFW

Trellix ePO

Microsoft Defender

Tanium

Kali

SamuraiWTF

Nmap

Burp Suite

sqlmap

Metasploit

Job description

G2IT, LLC. is seeking an experienced Incident Responder to join a mission-focused cyber defense team supporting the Office of Naval Intelligence (ONI) at HGCC in Suitland, MD.

You will act as a digital first responder to defend maritime intelligence networks and investigate incidents across the response lifecycle. You will work with cybersecurity, intelligence, and investigative partners to protect TS/SCI environments, handling escalations, ESAF submissions, DLP monitoring, and coordination with