Mid Lunix Systems Administrator with Security Clearance

Castalia Systems is looking for an active in-scope, Top Secret cleared, Mid Linux Systems Administrator to join our team in Pearl Harbor, Hawaii. We support our government customer by providing and maintaining the smooth operation of multi-user computer systems supporting a global cyber defense system used to detect and mitigate zero-day and advanced persistent threats (APT). We also support the development, documentation, and tracking of measurements and metrics relevant to keep Acceptable Quality Levels (AQLs). RESPONSIBILITIES: * Be able to work in a rapid paced environment and must be able to work independently * Lead the onboarding and standup of new enclaves and compute environments * The candidate works independently to maintain the smooth operation of a multi-user computer systems, including coordination with network administrators * Duties include setting up administrator and service accounts, tuning system performance, installing system wide software and allocate mass storage space * Interacts with users and evaluates vendor products * Makes recommendations to purchase hardware and software, coordinates installation and provides backup recovery * Develops and monitors policies and standards for allocation related to the use of computing resources * Creates, maintains, and implements detailed documentation and maintains standard operating procedures * Application of security settings and other commercial best practices such as DISA STIGS * Provides coaching and reviewing the work of lower-level technical staff * Provides support on a M-F business hours schedule, also responsible for on-call, extended hour, and weekend support as required by mission or emergencies. QUALIFICATIONS: * Active in-scope Top Secret Clearance * Bachelor’s degree in a relevant technical discipline and 4 years of overall related experience with Unix, Redhat Linux required. Specific experience, education and training may be considered in lieu of degree. * Shell scripting (e.g. bash) and experience in other languages like Perl, Python, and Java * Application of security settings and other commercial best practices such as DISA STIGS * Currently possess DoD 8750 certification at least IAT level II, e.g. Security+CE * Ability to be on an on-call status and work extended hours and on the weekends as required by the mission or emergency situations Desired: * Integration of Network Management (NM) and Element Management (EM) systems with network performance, trouble ticketing, and security subsystems highly desired. * Experience with support systems to include enclave Ethernet switches, storage area networks (SAN), and network attached storage (NAS). * Palo Alto firewall experience a big plus * Candidates with a thorough knowledge of networking principles to included TCP/IP a plus * Experience with a ticketing system such as BMC ITSM * ITIL v3 Foundation certified- * Windows Server experience * Experience working with virtual environments. Work Environment: * Work Conditions are a typical office environment * May require periods of non-Traditional work hours Why Castalia Systems? Castalia Systems values its employees, and our employees love to work for Castalia! We offer a generous benefits package that includes medical, dental and vision coverage, 401k matching with day 1 vesting, PTO and paid holidays, paid life insurance, AD&D, and long/short-term disability, professional training, and many more! 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.