Jobloria
Network Based Systems Analyst
Base-One Inc
Location : Centreville, VA, 20121
Job Type : Contractor
Date Posted : 2 December 2025
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:
o Characterize and analyze network traffic to identify anomalous activity and potential threats to network resources
o Coordinate with enterprise-wide cyber defense staff to validate network alerts
o Document and escalate incidents (including event's history, status, and potential impact for further action) that may cause ongoing and immediate impact to the environment
o Perform cyber defense trend analysis and reporting
o Perform event correlation using information gathered from a variety of sources within the enterprise to gain situational awareness and determine the effectiveness of an observed attack
o Provide daily summary reports of network events and activity relevant to cyber defense practices
o Receive and analyze network alerts from various sources within the enterprise and determine possible causes of alerts
o Provide timely detection, identification, and alerting of possible attacks/intrusions, anomalous activities, and misuse activities and distinguish these incidents and events from benign activities
o Use cyber defense tools for continual monitoring and analysis of system activity to identify malicious activity
o Analyze identified malicious activity to determine weaknesses exploited, exploitation methods, effects on system and information
o Identify and analyze anomalies in network traffic using metadata
o Validate intrusion detection system (IDS) alerts against network traffic using packet analysis tools
o Identify applications and operating systems of a network device based on network traffic
o Reconstruct a malicious attack or activity based off network traffic
o Identify network mapping and operating system (OS) fingerprinting activities
o Assist in the construction of signatures which can be implemented on cyber defense network tools in response to new or observed threats within the network environment or enclave
Required Skills/Clearances:
o U.S. Citizenship
o Active TS/SCI clearance
o Ability to obtain Department of Homeland Security (DHS) Entry on Duty (EOD) Suitability
o 2+ years of direct relevant experience in cyber defense analysis using leading edge technologies and industry standard cyber defense tools
o Experience successfully developing and deploying signatures
o Experience detecting host and network-based intrusions via intrusion detection technologies (e.g., Snort)
o Experience implementing incident handling methodologies
o Experience implementing protocol analyzers
o Experience collecting data from a variety of cyber defense resources
o Experience reading and interpreting signatures (e.g. snort)
o Experience performing packet-level analysis
o Experience conducting trend analysis
Desired Skills:
o Python programming experience
o Strong math and science background
o Experience with Carnegie Mellon SiLK tool suite
Required Education:
BS Computer Science, Cyber Security, Computer Engineering, or related degree; or HS Diploma & 4+ years of network investigations experience.
Desired Certifications:
· One or more of the following professional certifications: GNFA, GCIH, GCIA, GSEC, CASP+, CySA+, PaLMS, FedVTE
· GSEC (SANS401), Arcsight (or other SEIM solution), Network+, Security+
Freqently Asked Questions
Professionals in Centreville use advanced cyber defense tools and packet analysis to detect irregular network traffic patterns. This involves correlating data from multiple sources to pinpoint suspicious behavior and prevent potential threats, which is crucial given the area's focus on cybersecurity.
Moving from analyst to roles like network security engineer or cyber defense architect is common. Enhancing skills in threat detection, incident response, and acquiring certifications such as GSEC or GCIA can accelerate growth within cybersecurity sectors.
This role emphasizes real-time cyber defense, deep packet inspection, and threat signature development, while traditional analysts may focus more on network performance and infrastructure management. It requires a sharper focus on security analytics and incident handling.
Base-One Inc expects analysts to actively craft and deploy new signatures responding to emerging threats, enhancing their cyber defense network tools. This proactive approach ensures rapid adaptation to evolving attack vectors, strengthening overall security posture.
At Base-One Inc, analysts not only monitor alerts but also perform detailed cyber defense trend analysis and collaborate enterprise-wide, ensuring comprehensive situational awareness. This holistic integration distinguishes their approach from more siloed cybersecurity roles.
Certifications like GNFA, GCIH, and GSEC are highly valued in the Centreville region due to its concentration of defense and intelligence sectors. Holding these credentials demonstrates advanced expertise and aligns well with local hiring preferences.
Typical salaries for this role in Centreville range between $85,000 and $110,000 annually, reflecting the high demand for cybersecurity expertise in the area and the technical nature of the position requiring active TS/SCI clearance.
Centreville's proximity to defense agencies means analysts often engage with stringent security protocols and rapid incident escalation. The area's tech culture fosters strong collaboration and continuous learning to stay ahead of sophisticated cyber threats.
Analysts leverage diverse enterprise-wide feeds including intrusion detection systems, packet captures, and security information event management (SIEM) tools. This multi-faceted data collection allows nuanced analysis of network activities to uncover hidden intrusions.
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