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Computer Network Defense Jobs in Virginia (NOW HIRING)

Assists with the writing and publishing of Computer Network Defense guidance and reports on incident findings to appropriate constituencies * Collects network intrusion artifacts (e.g., PCAP, domains ...

Assists with the writing and publishing of Computer Network Defense guidance and reports on incident findings to appropriate constituencies * Collects network intrusion artifacts (e.g., PCAP, domains ...

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Computer Network Analyst

Chantilly, VA ยท On-site

$200K - $240K/yr

Description SAIC has an immediate opening for a Computer Network Analyst to support a highly ... Our robust portfolio of offerings across the defense, space, intelligence, and civilian markets ...

... and Department of Defense. You must have a strong record of achievement, familiarity with ... computer network data analysis packages and exposure to various computer network tools and ...

... Computer Network Defense guidance and reports on incident findings to appropriate constituencies; - Collects network intrusion artifacts (e.g., PCAP, domains, URI's, certificates, etc.) and uses ...

... Computer Network Defense guidance and reports on incident findings to appropriate constituencies; - Collects network intrusion artifacts (e.g., PCAP, domains, URI's, certificates, etc.) and uses ...

... Computer Network Defense guidance and reports on incident findings to appropriate constituencies - Collects network intrusion artifacts (e.g., PCAP, domains, URI's, certificates, etc.) and uses ...

... Computer Network Defense guidance and reports on incident findings to appropriate constituencies - Collects network intrusion artifacts (e.g., PCAP, domains, URI's, certificates, etc.) and uses ...

... Computer Network Defense guidance and reports on incident findings to appropriate constituencies; - Collects network intrusion artifacts (e.g., PCAP, domains, URI's, certificates, etc.) and uses ...

... Computer Network Defense incidents - Analyzes identified malicious network activity to determine weaknesses exploited, exploitation methods, effects on system and information - Collects network ...

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Computer Network Defense information

What are some common challenges faced by professionals in Computer Network Defense roles?

Professionals in Computer Network Defense often face the challenge of keeping up with rapidly evolving cyber threats and attack techniques. The role requires continuous learning and real-time problem-solving as new vulnerabilities and exploits emerge frequently. Team members must also balance proactive threat hunting with responding to immediate incidents, often collaborating closely with IT, security operations, and management to ensure a resilient defense posture. Adaptability, strong communication, and an analytical mindset are key to thriving in this dynamic environment.

What are the key skills and qualifications needed to thrive in Computer Network Defense, and why are they important?

To excel in Computer Network Defense, professionals need a strong understanding of network protocols, cybersecurity principles, and threat analysis, often supported by a degree in information security or computer science. Familiarity with intrusion detection systems (IDS), firewalls, SIEM platforms, and certifications such as CompTIA Security+ or CISSP are commonly required. Analytical thinking, attention to detail, and effective communication are valuable soft skills for this role. These competencies are crucial for proactively identifying vulnerabilities, responding to incidents, and safeguarding organizational networks from evolving cyber threats.

What is the difference between Computer Network Defense vs Cybersecurity Analyst?

AspectComputer Network DefenseCybersecurity Analyst
CertificationsCompTIA Security+, CISSP, CEHCompTIA Security+, CISSP, CEH
Work EnvironmentFocus on protecting network infrastructure, monitoring network traffic, and responding to network threatsBroader security analysis, including system vulnerabilities, incident response, and security policies
Employer & Industry UsagePrimarily in government, military, and large enterprise networksAcross various industries including finance, healthcare, and technology

Computer Network Defense and Cybersecurity Analyst roles share similar certifications and work environments, but Network Defense specializes in protecting network infrastructure specifically, while Cybersecurity Analysts handle a broader range of security tasks across systems and applications.

What is Computer Network Defense?

Computer Network Defense (CND) refers to the strategies, technologies, and processes used to protect computer networks and systems from unauthorized access, cyberattacks, and other security threats. CND professionals monitor network traffic, detect and respond to security incidents, and implement measures to prevent future attacks. Their work is critical for maintaining the confidentiality, integrity, and availability of information systems, especially in organizations that handle sensitive data. CND also involves regular vulnerability assessments, security policy enforcement, and incident response planning.
What are popular job titles related to Computer Network Defense jobs in Virginia? For Computer Network Defense jobs in Virginia, the most frequently searched job titles are:
What job categories do people searching Computer Network Defense jobs in Virginia look for? The top searched job categories for Computer Network Defense jobs in Virginia are:
Infographic showing various Computer Network Defense job openings in Virginia as of June 2026, with employment types broken down into 1% Locum Tenens, 2% As Needed, 75% Full Time, 2% Part Time, 18% Contract, and 2% Nights. Highlights an 93% Physical, 2% Hybrid, and 5% Remote job distribution.
Network Based Systems Analyst II

Network Based Systems Analyst II

ARSIEM

Arlington, VA โ€ข On-site

Full-time

Posted 9 days ago


Job description

About ARSIEM Corporation
At ARSIEM Corporation we are committed to fostering a proven and trusted partnership with our government clients. We provide support to multiple agencies across the United States Government. ARSIEM has an experienced workforce of qualified professionals committed to providing the best possible support.
As demand increases, ARSIEM continues to provide reliable and cutting-edge technical solutions at the best value to our clients. That means a career packed with opportunities to grow and the ability to have an impact on every client you work with.
ARSIEM is looking for a Network Forensics Cybersecurity Analyst. This position will support one of our Government clients in Arlington, VA.
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 action 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
  • Assists with the writing and publishing of Computer Network Defense guidance and reports on incident findings to appropriate constituencies
  • Collects network intrusion artifacts (e.g., PCAP, domains, URIs, 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 the 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

Minimum Qualifications
  • BS Computer Science, Cyber Security, Computer Engineering, or related degree; or HS Diploma & 4-6 years of network investigations experience.
  • 2+ 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, DMZs, WANs, etc.
  • Substantial knowledge of Splunk (or other SIEMs)
  • 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

Preferred Qualifications
  • 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 designing cybersecurity systems and environments in a Linux and/or Windows environment
  • Proficiency with virtualized environments
  • Desired Certifications:
  • DoD 8140.01 IAT Level II, IASAE II, CSSP Analyst
  • DoD 8140.01 GCIA, GCIH, CSSP Analyst/CSSP Incident Responder
  • DoD 8140.01 CEH, CSSP Analyst
  • SANS GIAC GNFA preferred

Clearance Requirement: This position requires an Active TS/SCI clearance and the ability to obtain Department of Homeland Security (DHS) Entry on Duty (EOD) Suitability.
Candidate Referral: Do you know someone who would be GREAT at this role? If you do, ARSIEM has a way for you to earn a bonus through our referral program for persons presenting NEW (not in our resume database) candidates who are successfully placed on one of our projects. The bonus for this position is $3,500, and the referrer is eligible to receive the sum for any applicant we place within 12 months of referral. The bonus is paid after the referred employee reaches 6 months of employment.
ARSIEM is proud to be an Equal Opportunity and Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age, or any other federally protected class.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.