TS/SCI Network-Based Incident Response Analyst

Node; United States; On-site; USD 90,000 - 150,000; Full time

Job summary

Node is seeking a Network-Based System Analyst in Arlington, VA, requiring an active TS/SCI clearance and strong experience in network investigations and cyber defense. The role focuses on on-site and on-call DFIR activities, network traffic analysis, and incident response collaboration with government leads.

Responsibilities include coordinating incident response, interfacing with customers, and applying security best practices across topology, protocols, and device configurations.

Qualifications

• U.S. Citizenship and an active TS/SCI clearance are required.
• Minimum 5 years of directly relevant experience in network investigations.
• Deep knowledge of CND policies, procedures, and regulations.
• Strong understanding of TCP/IP, common protocols (HTTP/S, DNS, SSH, etc.), and Wi‑Fi networking.
• Experience with analyzing network traffic and reconstructing a malicious incident.

Responsibilities

• Assists the Government lead in coordinating teams in preliminary incident response investigations.
• Assists the Government lead with interfacing with the customer while on site.
• Determines appropriate courses of actions in response to identified and analyzed anomalous network activity.
• Assesses network topology and device configurations identifying critical security concerns and providing security best practice recommendations.
• Collects network intrusion artifacts (e.g., PCAP, domains, URI’s, certificates) and uses discovered data to mitigate potential incidents.
• Analyzes identified malicious network activity to determine weaknesses exploited, exploitation methods, effects on system and information.
• Collects network device integrity data and analyzes for signs of tampering or compromise.
• Assists with real-time CND incident handling tasks to support onsite engagements.

Skills

US Citizenship

Active TS/SCI clearance

5+ years network investigations

CND policies & regulations

TCP/IP & network protocols

SIEM (Splunk)

MITRE ATT&CK knowledge

Network traffic analysis & forensics

Job description

Node is seeking a Network-Based System Analyst in Arlington, VA, requiring an active TS/SCI clearance and strong experience in network investigations and cyber defense. The role focuses on on-site and on-call DFIR activities, network traffic analysis, and incident response collaboration with government leads.

Responsibilities include coordinating incident response, interfacing with customers, and applying security best practices across topology, protocols, and device configurations.