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Castelion · 1 day ago

Cybersecurity Engineer

Torrance, CA

Full-time

Onsite

Mid, Senior Level

$120K/yr - $170K/yr

4+ years exp

Castelion is bringing a new approach to defense development and production, focusing on short, iterative design cycles and modern manufacturing strategies. They are seeking a Cybersecurity Engineer to lead efforts in securing systems in compliance-heavy environments and integrate security into infrastructure and application design.

AerospaceGovernmentManufacturingMilitaryNational Security

No H1B

U.S. Citizen Only

Responsibilities

Design, implement, and maintain cybersecurity tools and systems, including firewalls, EDR, IDS/IPS, SIEM, and vulnerability scanners

Proactively monitor security events, investigate suspicious activity, and respond to incidents with urgency and precision

Develop and maintain System Security Plans (SSPs) , POA&Ms , and supporting documentation for audits and assessments

Partner with IT and engineering teams to integrate security into infrastructure and application design (DevSecOps)

Manage security patching cycles and lead remediation efforts based on risk assessments

Support audit, compliance, and risk management activities (e.g., NIST, CMMC, & others) and manage supply chain cybersecurity concerns

Conduct regular internal audits and readiness checks in preparation for external audits or DoD reviews

Serve as on-site cybersecurity expert for Torrance HQ and occasionally travel (510%) to other locations (e.g., Allen, TX)

Mentor IT, security staff, and all employees to help foster a security-first mindset across the company

Qualification

Cybersecurity engineeringNIST SP 800-171Incident responseCloud securitySecurity tools proficiencyTroubleshooting skillsHigh commitmentDocumentation skillsCommunication skillsCreative problem solving