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Cyber Threat Analyst

Castalia Systems
paid holidays, 401(k)
United States, North Carolina, Morrisville
Aug 19, 2025

Work Type: Remote (with the ability to travel to Falls Church, VA or Morrisville, NC as required by client)

Job Type: Full-Time

Clearance: Public Trust

Must be a U.S. Citizen

Benefits: Medical, dental, and vision coverage, 401k matching, generous PTO, paid holidays, professional training opportunities, and even pet insurance to ensure your furry friends are cared for too.

Job Summary

Castalia Systems is seeking a Cyber Threat Analyst to join our team and support our customer.

Roles and Responsibilities

A qualified candidate will perform the following duties and responsibilities, but are not limited to:



  • Responsible for performing triage on all security escalations and detections to determine scope, severity, and root cause.
  • Monitor cyber security events, detecting incidents, and investigating incidents.
  • Identify, recommend strategies, develop, and implement automation use cases leveraging AI/ML capabilities.
  • Support deploying, configuring, testing, and maintaining Security Orchestration, Automation, and Response (SOAR) platform, and tools integrated with AI/ML capabilities to enhance threat detection, analysis and response.
  • Provide support to contract Program Manager, as necessary.
  • Effectively communicates technical information to non-technical audiences.
  • Influence others to comply with policies and conform to standards and best practices.


Required Qualifications



  • 7+ years of experience with security operations, threat hunting, and incident response
  • Experience in analyzing alerts from Cloud, SIEM, EDR, and XDR tools, and alerts tuning process with preference on SentinelOne, Armis, and Splunk.
  • Experience in configuring network devices and analyzing network traffic.
  • Experience with Artificial Intelligence and Machine Learning (AI/ML) based security tools.
  • Experience in researching, developing, and implementing SOAR use cases.
  • Familiar with Security Orchestration, Automation, and Response (SOAR) platform
  • Familiarity with cybersecurity operation center functions.
  • Experience configuring and re-configuring security tools, including SenintelOne and Splunk.
  • Experience implementing Security frameworks, such as MITRE ATT&CK and NIST, and can interpret use cases into actionable monitoring solutions.
  • MUST have one or more of the following Certification(s): CISSP, CISA, CISM, GIAC, RHCE.
  • Strong working knowledge of:

    • Develop, test and Implement dynamic Risk-Based Alerting (RBA).
    • Identifying and developing RBA and identifying use cases for SOAR and AI/ML.
    • Monitor and analyze alerts from various sources such as IDS/IPS, Splunk, Tanium, MS Defender, SentinelOne and Cloud security tools leveraging SOAR and AI/ML capabilities and provide recommendation for further tuning of these alerts when necessary.
    • Analyze network traffic utilizing available tools and provide recommendations.
    • Perform vulnerability assessments of recently discovered CVEs against USPS systems and network.
    • Assist in the process of configuring or re-configuring the security tools.
    • Perform analysis on hosts running on a variety of platforms and operating systems, to include, but not limited to, Microsoft Windows, UNIX, Linux, as well as embedded systems and mainframes.
    • 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.
    • Test, evaluate, and verify hardware and/or software to determine compliance with defined specifications and requirements.




Physical Requirements/Work Environment



  • Normal office environment.


Travel



  • Must be willing to travel 0-25% of the time.


Company Description

Castalia Systems is a proven business partner providing mission critical solutions to the Federal Government. We provide cutting edge solutions from Securing and Managing Data to Systems Engineering and Development. Castalia Systems is a pioneer in Artificial Intelligence Design and Application.

With our vast knowledge of our customers' needs and relevant technology, our team is able to bring successful solutions to every mission. We are one-upping our competitors by providing premium IT solutions and platforms with cutting-edge technology so it's so evident when you compare us with anyone.

Disclaimer

Castalia Systems is an equal employment opportunity and affirmative action employer and strives to comply with all applicable laws prohibiting discrimination based on race, color, creed, sex, sexual orientation, age, national origin, or ancestry, physical or mental disability, veteran status, marital status, HIV-positive status, as well as any other category protected by federal, state, or local laws. All such discrimination is unlawful, and all persons involved in the operations of the company are prohibited from engaging in this type of conduct.

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