Network Based Systems Analyst L3

Base One Technologies; Arlington (VA); On-site; USD 90,000 - 120,000; Full time

Job summary

A cybersecurity firm in Arlington, VA is seeking applicants for a role focused on network investigations and incident response. Ideal candidates must have an active TS/SCI clearance and possess 5+ years of relevant experience in assessing and mitigating network threats. Familiarity with TCP/IP protocols and network topologies is essential. This position requires strong problem-solving skills and teamwork across locations.

Qualifications

• Active TS/SCI clearance required.
• 5+ years of relevant experience in network investigations.
• In-depth knowledge of TCP/IP protocols.

Responsibilities

• Assist in coordinating incident response investigations.
• Analyze network activity for security concerns.
• Conduct real-time CND incident handling.

Skills

Anomaly detection in network traffic

Collaboration across locations

Network investigations

Knowledge of network topologies

Education

BS in Computer Science or related field

HS Diploma & 7-9 years of network experience

Tools

Splunk

Wireshark

Job description

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, etc.) and uses discovered data to enable mitigation of potential Computer Network Defense 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 (i.e., forensic collections, intrusion correlation and tracking, threat analysis, and advising on system remediation) tasks to support onsite engagements

Required Skills

• Must have an active TS/SCI clearance
• Must be able to obtain DHS Suitability
• 5+ years of directly relevant experience in network investigations
• In depth knowledge of CND policies, procedures and regulations
• In depth knowledge of TCP/IP protocols
• In depth knowledge of standard protocols – ICMP, HTTP/S, DNS, SSH, SMTP, SMB, NFS, etc.
• In depth knowledge and experience of Wifi networking
• In depth knowledge and experience of network topologies - DMZ’s, WAN’s, etc.
• Substantial knowledge of Splunk (or other SIEM’s)
• Understanding of MITRE Adversary Tactics, Techniques and Common Knowledge (ATT&CK)
• Knowledge of Computer Network Defense policies, procedures, and regulations
• Knowledge of defense-in-depth principles and general attack stages with respect to network security architecture
• Ability to characterize and analyze network traffic to identify anomalous activity and potential threats to network resources
• Ability to identify and analyze anomalies in network traffic using metadata
• Experience with reconstructing a malicious attack or activity based on network traffic
• Experience examining network topologies to understand data flows through the network
• Must be able to work collaboratively across physical locations

Desired Skills

• Substantial knowledge of network device integrity concepts and methodologies
• Proficiency with network analysis software (e.g. Wireshark)
• Proficiency with carving and extracting information from PCAP data
• Proficiency with non-traditional network traffic (e.g. Command and Control)
• Proficiency with preserving evidence integrity according to standard operating procedures or national standards
• Proficiency with virtualized environments

Required Education

BS Computer Science, Cyber Security, Computer Engineering, or related degree; or HS Diploma & 7-9 years of network investigations experience.

Desired Certifications

• DoD 8140.01 IAT Level II, IASAE II, CSSP Analyst, GCIA, GCIH, CSSP Analyst/CSSP Incident Responder, CEH