Senior Cybersecurity Analyst Job in Torrance, CA | Castelion Corporation
Castelion is moving quickly to develop and deliver advanced defense systems at a time when speed, reliability, and strong execution matter more than ever. The company is focused on building practical capabilities that can support critical national security needs, with an emphasis on turning ambitious ideas into real-world systems. The Senior Cybersecurity Analyst will play an important role in protecting the company’s people, technology, data, and operational environment. This position is well suited to someone who can assess risk, investigate potential security issues, strengthen controls, and work closely with technical and business teams in a fast-moving setting. Day-to-day responsibilities may include monitoring security events, supporting incident response, reviewing vulnerabilities, improving security processes, and helping ensure that systems and information are handled responsibly. The ideal candidate is detail-oriented, calm under pressure, and able to communicate clearly when priorities shift or security concerns need immediate attention. This role is based in Torrance, California, and requires full-time onsite presence. It offers the opportunity to contribute directly to a mission-driven organization where cybersecurity is not an afterthought, but a core part of delivering dependable defense technology.
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