Network Based Systems Analyst III

Solutions3 LLC; Arlington (VA); Hybrid; USD 120,000 - 160,000; Full time

Job summary

Solutions³ LLC seeks a Cyber Network Defense Analyst to support front line DFIR and proactive hunting for threats. You will coordinate with government leads, analyze network activity, and collect artifacts on site to drive rapid remediation. Strong CND experience and DoD/IC familiarity are needed.

Responsibilities include interfacing with customers, assessing topologies for risky configurations, and applying defense-in-depth practices across critical networks and infrastructure.

Qualifications

• Experience with CND policies, procedures and regulations.
• Strong knowledge of TCP/IP and common network protocols.
• Experience analyzing network traffic with tools like Wireshark.
• Familiarity with MITRE ATT&CK framework and cyber threats.
• Proficient in using SIEMs (e.g., Splunk) for incident analysis.
• Understanding of network topologies (DMZs, WANs) and security controls.

Responsibilities

• Assist Government lead in coordinating incident response investigations.
• Interface with customers on-site during engagements.
• Determine actions in response to anomalous network activity.
• Assess topology and configurations to identify security concerns.
• Collect network artifacts (PCAP, domains, URIs) for mitigation.
• Analyze malicious activity to identify exploitation methods and impact.
• Support real-time CND incident handling and remediation efforts.

Skills

CND policies

TCP/IP

Wireshark

ATT&CK

Splunk/SIEM

DMZ/WAN knowledge

Education

Bachelor's in CS/Cyber Security/Engineering

HS with 7-9 years net investigations

Tools

PCAP analysis

Job description

Network Based Systems Analyst III

Description

Solutions³ LLC is supporting our prime contractor and their U.S. Government customer on a large mission critical development and sustainment program for on and offsite incident response to Government agencies and critical infrastructure owners who experience cyber-attacks. Solutions³ LLC provides advanced technical assistance, proactive hunting, rapid onsite incident response, and immediate investigation, using host and network-based cybersecurity analysis capabilities.

Solutions³ LLC is seeking a Cyber Network Defense Analysts (CNDA) to support this critical mission by providing front line response for digital forensics/incident response (DFIR) and proactively hunting for malicious cyber activity.

Eligibility

• Must be a US Citizen
• Must have an active TS/SCI clearance
• Must be able to obtain DHS Suitability prior to starting employment
• 5+ years of directly relevant experience in network investigations

Responsibilities Include

• 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 analyzes 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 analyze 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

• 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

Desired Certifications

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

Required Education

Bachelor of Science in Computer Science, Cyber Security, Computer Engineering, or related degree; or High School Diploma and 7-9 years of network investigations experience