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Systems Administrator-Information Systems Security Officer

Castalia Systems
Schofield Barracks, United Statesfull_timeVerifiedPosted 15 May 2026
💰 $120,000/yr($115,600/yr – $120,000/yr)

About the role

Job Type: Full- Time

Workplace Type: Onsite

Clearance: TS/SCI

Must be a U.S. Citizen

Job Summary

Castalia Systems is seeking a Journeyman Systems Administrator/Information Systems Security Officer to support our client with full lifecycle support to risk management and analysis on intelligence networks and systems to identify capability gaps, threats, vulnerabilities and provide other technical support as required.

Roles and Responsibilities

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

  • Provide full lifecycle support to risk management and analysis on intelligence networks and systems to identify capability gaps, threats, vulnerabilities and provide other technical support as required.
  • Be a technical leader and support Enterprise activities and customers throughout multiple classified computing domains.
  • Responsible for ensuring all Information System Security policies, standards, and directives are enforced to support assessment, authorization and continued operation of information systems processing classified information.
  • Define security expectations, drive the remediation of vulnerabilities, and collaborate across multidisciplinary teams to ensure systems remain authorized, protected, and mission ready.

Required Qualifications

  • HS diploma, GED or Associate’s degree and 22+ years of experience in a professional work environment or Bachelor's degree and 18+ years of experience in a professional work environment, or Master’s degree and 10+ years of experience in a professional work environment.
  • IAM Level I and/or Level II certification, at least one of the following certifications: CAP (Certified Authorization Professional), CASP+ (CompTIA Advanced Security Practitioner), CISM (Certified Information Security Manager), CISSP (Certified Information Systems Security Professional), GSLC (GIAC Security Leadership Certification).
  • 3+ years of experience as an ISSO Information Assurance Technical (IAT) supporting or Information Assurance Management (IAM).
  • Experience with integrating MI Systems with other warfighting functions such as Fires, Mission Command, Signal, Electronic Warfare, etc., on multiple classification networks.
  • Experience developing technological responses with recommendations to prevent, reduce, detect, and respond to cyberspace threats.
  • Ability to conduct research and analysis of actionable cyberspace threats requiring a rapid response. Assess information security for classified activities.
  • Ability to conduct research and assessments to develop and update system security outlining security operating procedures.
  • Ability to access National Security Agency Network and Communications Security Information.
  • Ability to travel to other CONUS and OCONUS sites as needed.
  • Ability to provide NE and advanced level Computer Environment (CE) support.

Preferred Qualifications

  • Experience as an ISSM, ISSE, or SCA supporting classified programs.
  • Experience completing certification and accreditation packages and requirements via the Enterprise Mission Assurance Support Service (eMASS) system for RMF documentation submission.
  • Ability to perform security inspections, validate clearances, performg certifications and cyber awareness training.
  • Ability to assist with the issuance of Public Key Infrastructures (PKIs).
  • Ability to prepare Body of Evidence for Authorization/Assessment activities to receive Approval to Connect/Operate.
  • Master’s Degree.
  • Security+, GIAC Security Essentials (GSEC), or Cisco Certified Network Associate (CCNA-Security).

Physical Requirements/Work Environment

  • Normal office environment.

Travel

  • Less than 5%.

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 pi

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Company

Castalia Systems

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