RiseMe
Castelion logo
Castelion Verified
Aerospace, Defense, Deep Tech, Hardware

Information Systems Security Manager (ISSM)

Torrance, CAOnsiteFull TimeManager / HeadPosted 2 months ago

Is this role right for you?

Upload your resume and get a skill-by-skill breakdown — see exactly where you match, where you're close, and what to highlight. Not a mystery percentage.

Get a tailored resume highlighting what this role needs.

Required skills

  • classified cyber assurance
  • RMF A&A lifecycle
  • regulatory requirements
  • contractual requirements
  • emerging community practices
  • risks
  • threats
  • audits
  • assessments
  • tests

Nice to have

  • NRO A&A processes
  • JSIG A&A processes
  • networks
  • weapon systems
  • satellite systems
  • COMSEC procedures

Role summary

Castelion is seeking a classified cyber assurance practitioner for an Information Systems Security Manager (ISSM) role in Torrance, CA. This position focuses on assessing and governing the classified cyber assurance program, ensuring compliance with industry standards, contractual, and regulatory requirements. The ISSM will act as the primary point of contact for stakeholders, manage the RMF A&A lifecycle, identify and implement new requirements, and stay updated on emerging threats. Responsibilities include planning audits, selecting tools, and ensuring classified networks maintain compliance and active ATO. The role requires expert knowledge of tools like Nessus, Splunk, ServiceNow, and eMASS, and involves mentoring analysts. A Bachelor's degree or 5+ years of experience in managing cyber assurance for classified systems is required, along with 3+ years in cyber assurance. Preferred skills include NRO/JSIG A&A processes, RMF expertise, and COMSEC procedures. An active Top Secret clearance with SCI eligibility is mandatory.

Why Castelion, Why Now

Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus, ownership, and excellence are decisive advantages - and we're building a world-class team to turn bold ideas into real capability.

This is a rare opportunity to join at an early stage, where you'll have significant ownership, collaborate with exceptional teammates, and make a direct, measurable impact on our mission and the future of the company - regardless of your function.

Information Systems Security Manager (ISSM)

Castelion is seeking a classified cyber assurance practitioner to drive the Castelion classified cyber assurance program forward. The program focuses on three major areas:

  • Assessment: Assessing the state of the classified cyber assurance program against industry standards, requirements (contractual and regulatory), and organizational needs.
  • Governance: Managing and spearheading governance of the classified cyber assurance program to interpret and drive implementation of industry standards, requirements (contractual and regulatory), and organizational needs.
  • Communications: Be "the face" of classified cyber assurance program to both internal and external stakeholders (e.g. customer, regulatory, government and supplier entities).

    • The successful candidate will drive the classified assurance team to ensure Castelion delivers on customer requirements, reduces risk, and ensures mission success. We are a fast paced, multi-tasking, highly dynamic work environment with high degrees of autonomy and accountability.

    Responsibilities

  • Responsible for the complete RMF A&A lifecycle process for assigned Castelion classified information systems
  • Ensure compliance with existing regulatory, policy, and contractual requirements as they pertain to Castelion classified information systems
  • Responsible for identification, triage, and implementation of new regulatory and contractual requirements into both broad and specific applications
  • Keep apprised of emerging community practices, risks, and threats
  • Plan, prepare for, schedule and coordinate audits, assessments, and tests
  • Identify, evaluate, and select various automation, assessment, and management tool sets to drive effectiveness and efficiencies
  • Provide expert knowledge of Nessus, Splunk and Security Center tools
  • Provide expert knowledge of Service Now (SNOW), eMASS, and other GRC tools
  • Guide and mentor Cleared Cyber Assurance Analyst(s)
  • Build and maintain positive relationships with internal stakeholders, contractual partners, and government customers
  • Successfully further Castelion objectives and initiatives
  • Ensure all classified networks remain in compliance and have active ATO
  • Responsible for creating and maintaining all required cybersecurity trainings, user agreements, media logs, and classified equipment control
  • Ability to meet fast deadlines while maintaining compliance

    • Basic Qualifications

  • Bachelor's degree; OR 5+ years of experience managing cyber assurance for classified computer systems/networks in lieu of a degree
  • 3+ years of experience in cyber assurance

    • Preferred Skills and Experience

  • Demonstrated experience with NRO A&A processes and the JSIG A&A processes
  • Subject matter expertise in the RMF 7 step process
  • Experience working within highly technical and demanding teams and environments
  • Experience with obtaining ATO(s) for networks, weapon systems, and satellite systems
  • Demonstrated experience with COMSEC procedures and practices
  • Exceptional written and verbal communication skills
  • Exceptional organizational skills
  • Demonstrated project management skills, and continued track record of getting things done quickly with high quality
  • Demonstrated record for providing unique and/or novel solutions
  • Demonstrated record of integrating with I.T. and product security functions
  • Ability to perform within mission and time constrained environments
  • High comfort with and acceptance of performing individual contributor functions/tasks
  • Masters Degree in Cybersecurity

    • Additional Requirements

  • Must be able to work extended hours and/or weekends as needed
  • Ability to travel both locally and domestically
  • DoD IAM Level III eligibility based on active certifications
  • Counterintelligence (CI) scope polygraph (full-scope or lifestyle also acceptable), or ability to successfully complete
  • This position is based in Torrance, CA and requires being onsite - remote work not considered
  • Active Top Secret clearance with SCI eligibility.

    • Castelion offers a generous benefits package. Please refer to the bottom of our Careers page for more details.

    Other Duties

    Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

    Additional Eligibility Requirements

    This position may require access to classified information or restricted U.S. Government sites, systems, or information, as determined by the Company and/or applicable U.S. Government requirements. If the position is so designated, your employment in the role may be contingent upon your ability to obtain and maintain the required U.S. Government security clearance or other government authorization, and to satisfy any citizenship or other eligibility requirements imposed by applicable law, regulation, executive order, or government contract requirements. You will be notified if and when such requirements apply.

    Affirmative Action/EEO Statement

    Castelion is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, genetic information, protected veteran status, or any other characteristic protected by applicable federal, state, or local law.

    Castelion is committed to providing reasonable accommodations to qualified individuals with disabilities throughout the application and hiring process. If you require a reasonable accommodation to complete an application, participate in the interview process, or otherwise participate in the hiring process, please contact hr@castelion.com. Requests for accommodation will be considered on an individual basis and handled in accordance with applicable law.

    Castelion is committed to fostering a workplace where employment decisions are based on qualifications, business needs, and the ability to perform the essential functions of the role, with or without reasonable accommodation.

    EAR/ITAR Requirements

    This position requires access to export-controlled information, and as such, employment (or hiring of a contractor) is contingent upon the candidate’s ability to access all applicable export-controlled information without additional export licensing being required by the Bureau of Industry and Security and/or the Directorate of Defense Trade Controls.

    Ready to apply?
    You'll be redirected to Castelion's application page.

    Similar roles

    See how RiseMe works

    Match, tailor, and prep so you send fewer applications and land more interviews.