Senior Cybersecurity Analyst

Castelion Corporation
Torrance, CA
Category Security
Job Description
Castelion is seeking an experienced Senior Cybersecurity Analyst to join their team. The ideal candidate will have expertise in threat detection, SOC operations, incident response, and compliance frameworks specific to the defense industrial base.

Requirements

  • Lead 24/7 security monitoring efforts using SIEM platforms and advanced threat detection tools
  • Analyze security events, identify potential threats, and coordinate incident response activities
  • Identify vulnerabilities and recommend remediation strategies for complex environments
  • Analyze malware, APT tactics, and threat actor behavior
  • Perform threat hunting activities to proactively identify sophisticated adversaries
  • Conduct forensic analysis of security incidents involving classified and sensitive systems
  • Contribute to compliance with NIST 800-171, CMMC, DFARS, ITAR, and other DoD requirements
  • Contribute to and/or maintain security documentation including internal documentation, policies and procedures, incident reports, and audit artifacts
  • Configure and maintain security tools including IDS/IPS, EDR, DLP, and vulnerability scanners
  • Support secure architecture reviews across the organization
  • Mentor junior analysts and contribute to team skill development
  • Coordinate with IT, engineering, manufacturing, and program teams on security initiatives
  • Participate in threat intelligence sharing with government and industry partners

Benefits

  • Four weeks of paid time off
  • Ten company-paid holidays
  • Comprehensive health benefits
  • Paid parental leave
  • $100 monthly fitness stipend
  • Onsite EV charging
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