Node.Digital

Develops AI-driven digital solutions for missions

Network-Based System Analyst

Security Operations & Incident ResponseConfirmed live in the last 24 hours

Full-timeArlington County, Arlington, VA, USANo salary listed

About the Job

Requirements

U.S. citizenship is required.
Must have an active Top Secret/Sensitive Compartmented Information clearance.
Must be able to obtain Department of Homeland Security Suitability.
Must have 5 or more years of directly relevant experience in network investigations.
In-depth knowledge of Computer Network Defense policies, procedures, and regulations.
In-depth knowledge of Transmission Control Protocol/Internet Protocol protocols.
In-depth knowledge of standard protocols, including Internet Control Message Protocol, Hypertext Transfer Protocol/Secure, Domain Name System, Secure Shell, Simple Mail Transfer Protocol, Server Message Block, and Network File System.
In-depth knowledge and experience of Wi-Fi networking.
In-depth knowledge and experience of network topologies, including demilitarized zones and wide area networks.
Substantial knowledge of Splunk or other security information and event management systems.
Understanding of MITRE Adversary Tactics, Techniques, and Common Knowledge (ATT&CK).
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 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.
Must have a Bachelor of Science degree in Computer Science, Cyber Security, Computer Engineering, or a related degree, or a high school diploma and 7–9 years of network investigations experience.

Responsibilities

Assist the Government lead in coordinating teams during preliminary incident response investigations.
Assist the Government lead with interfacing with the customer while on site.
Determine appropriate courses of action in response to identified and analyzed anomalous network activity.
Assess network topology and device configurations, identify critical security concerns, and provide security best-practice recommendations.
Collect network intrusion artifacts, such as packet captures, domains, uniform resource identifiers, and certificates, and use discovered data to enable mitigation of potential Computer Network Defense incidents.
Analyze identified malicious network activity to determine exploited weaknesses, exploitation methods, and effects on systems and information.
Collect network device integrity data and analyze it for signs of tampering or compromise.
Assist with real-time Computer Network Defense incident-handling tasks during on-site engagements, including forensic collections, intrusion correlation and tracking, threat analysis, and advising on system remediation.

Desired Qualifications

Substantial knowledge of network device integrity concepts and methodologies.
Proficiency with network analysis software such as Wireshark.
Proficiency with carving and extracting information from packet capture data.
Proficiency with non-traditional network traffic, such as command and control.
Proficiency with preserving evidence integrity according to standard operating procedures or national standards.
Proficiency with virtualized environments.
DoD 8140.01 Information Assurance Technical Level II, Information Assurance System Architecture and Engineering Level II, CSSP Analyst, GCIA, GCIH, CSSP Incident Responder, or CEH certification.
SANS GIAC GNFA certification preferred.

Network Based System Analyst

Node.Digital · Arlington, United States · Full-time · Posted 2025-08-18

Workplace: on_site

Department: RTX-ESS

Description

Network-Based System Analyst

Location: Arlington, VA

Must have an active Top Secret Security Clearance

Node provides remote and onsite advanced technical assistance, proactive hunting, rapid onsite incident response, and immediate investigation and resolution using host-based, network-based and cloud-based cybersecurity analysis capabilities. Team personnel provide front line response for digital forensics/incident response (DFIR) and proactively hunting for malicious cyber activity.

We are seeking Cyber Network Defense Analysts (CNDA) to support this critical customer mission.
The CDNA uses information collected from a variety of sources to monitor network activity and analyze it for evidence of suspicious behavior. Monitoring and analysis are performed to identify and report events that occur, or might occur, within the network, in order to protect information, information systems, and networks from threats.

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 analyses 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

Requirements

Required Skills:
- U.S. Citizenship
- 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
- SANS GIAC GNFA preferred

Company Overview:

Node.Digital is an independent Digital Automation & Cognitive Engineering company that integrates best-of-breed technologies to accelerate business impact.

Our Core Values help us in our mission. They include:

OUR CORE VALUES

Identifying the~RIGHT PEOPLE~and developing them to their full capabilities

Our customer’s “Mission” is our “Mission”. Our~MISSION FIRST~approach is designed to keep our customers fully engaged while becoming their trusted partner

We believe in~SIMPLIFYING~complex problems with a relentless focus on agile delivery excellence

Our mantra is “~Simple*Secure*Speed~” in the delivery of innovative services and solutions.

Benefits

We are proud to offer competitive compensation and benefits packages to include:

Medical
Dental
Vision
Basic Life
Long-Term Disability
Health Savings Account
401K
Three weeks of PTO
10 Paid Holidays
Pre-Approved Online Training

Apply

Apply at Node.Digital

About the Company

Node.Digital

Develops AI-driven digital solutions for missions

Node.Digital builds digital solutions using AI automation and machine learning to help clients achieve their missions. Its approach centers on designing and deploying AI-powered software that automates processes, analyzes data, and supports decision-making for complex, mission-focused problems. Unlike general software firms, Node.Digital emphasizes delivering tailored, mission-driven solutions that address each customer’s unique objectives. The company’s goal is to enable organizations to operate more effectively and achieve impactful outcomes by applying AI and ML to real-world challenges.

Company size: 11-50
Company stage: Not listed
Total funding: Not listed
Headquarters: Herndon, VA
Founded: 2017

Recently Posted Jobs

Explore more opportunities at Node.Digital

See more jobs