Jobloria
Network Based Systems Analyst
Base-One Inc
Location : Falls Church, VA, 22046
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
In Falls Church, VA, certifications like GSEC, GCIA, and CISSP are highly regarded for Network Based Systems Analysts. These validate expertise in cyber defense and network intrusion detection, aligning well with local employers' preference for candidates who can handle sophisticated security protocols and DHS suitability requirements.
Base-One Inc's recruitment in Falls Church targets candidates with active TS/SCI clearances and hands-on cyber defense experience, making the selection quite competitive. Candidates with advanced packet analysis skills and signature development experience stand out amid a talent pool emphasizing federal security clearance and technical depth.
A typical day involves scrutinizing network traffic for anomalies, correlating events across enterprise cyber defense systems, and escalating incidents that threaten network integrity. This role demands vigilance in identifying attacks, reconstructing activities from packet data, and consistently updating detection signatures to enhance network security.
Advancing in this field requires mastery of intrusion detection systems like Snort, proficiency in Python scripting, and deep understanding of network protocols. Cultivating expertise in trend analysis and signature development alongside obtaining certifications like GCIH or CySA+ significantly elevates career trajectory.
In Falls Church, VA, Network Based Systems Analysts typically earn between $85,000 and $110,000 annually. Salaries reflect the high demand for professionals with TS/SCI clearances and specialized skills in cyber defense, with compensation influenced by experience and certifications.
Network security roles in Falls Church often require navigating a federal-heavy work environment with stringent clearance processes. Candidates must be prepared for thorough DHS suitability checks and adapt to a fast-paced, security-conscious culture driven by government contracts and compliance requirements.
Unlike general network analysts, Network Based Systems Analysts in Falls Church focus intensively on cyber defense, employing advanced packet-level analysis and signature creation to detect sophisticated threats. Their role demands active collaboration with enterprise-wide cyber defense teams and handling classified security protocols.
At Base-One Inc, Network Based Systems Analysts serve as critical defenders by analyzing network traffic anomalies and escalating threats promptly. They provide actionable intelligence through detailed reports and collaborate with cyber defense staff to refine detection capabilities, ensuring robust protection of sensitive information systems.
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