Systems AdministratorInformation Systems Security Officer Senior with Security Clearance

Career Opportunities with Castalia Systems A great place to work. Careers At Castalia Systems Current job opportunities are posted here as they become available. Systems Administrator-Information Systems Security Officer Senior Location:Schofield Barracks , HI START YOUR APPLICATION Job Type: Full- Time Workplace Type: Onsite Clearance: TS/SCI Must be a U.S.

Citizen Job Summary Castalia Systems is seeking a Senior 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

• MA/MS degree and 10+ years of experience or Bachelor’s degree and 18+ years of experience in a professional work environment or Associate’s degree and 22+ years of experience in a professional work environment, or HS diploma or GED and 22+ 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 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, performing 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

• Ability to travel to other CONUS and OCONUS sites as needed.

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 pioneer in Artificial Intelligence Design and Application. With our vast knowledge of our customers’ needs and relevant technology, our team is able to bring successful solutions to every mission. We are one-upping our competitors by providing premium IT solutions and platforms with cutting-edge technology so it’s so evident when you compare us with anyone. Compensation At Castalia Systems, we provide you with opportunities and choices and support your total well-being. Our benefits include: Medical, dental, vision coverage, 401k matching, generous PTO, paid holidays, professional training opportunities, and even pet insurance to ensure your furry friends are cared for too. All regularly scheduled employees working at least 30 hours per week are eligible to participate in Castalia Systems’ benefit programs. Individuals that do not meet the threshold are only eligible for select offerings, not inclusive of health benefits. Salary at Castalia Systems is determined by various factors, including but not limited to location, position knowledge, skills, competencies, and experience, as well as contract-specific affordability and organizational requirements. The projected compensation range for this position is $137,700.00 to $145,800.00 (annualized USD). The estimate displayed represents the typical salary range for this position and is just one component of Castalia Systems’ total compensation package for employees. Disclaimer Castalia Systems is an equal employment opportunity and affirmative action employer and strives to comply with all applicable laws prohibiting discrimination based on race, color, creed, sex, sexual orientation, age, national origin, or ancestry, physical or mental disability, veteran status, marital status, HIV-positive status, as well as any other category protected by federal, state, or local laws. All such discrimination is unlawful, and all persons involved in the operations of the company are prohibited from engaging in this type of conduct. Visit Our Home Page © 2026 Castalia Systems Applicant Tracking System