Operating Systems (OS) Administrator III

Americas Fort Irwin, California





Position Title:

Operating Systems (OS) Administrator III


Ft. Irwin, California


Full Time

FLSA Category:



Tribalco is actively seeking an experienced and highly motivated Operating Systems Administrator to join our team.



To perform this job successfully, an individual must be able to perform each essential duty satisfactorily.  The requirements listed below are representative of the knowledge, skill and ability required.  Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

  • Respond to system failures caused by software and hardware deficiencies by initiating corrective action to recover/restore data and return system back to normal operations
  • Perform diagnostic testing and using various analysis techniques on classified and unclassified systems; isolate the source of problems, resolve hardware problems which may require replacing internal parts of servers (e.g., memory boards, hard drives, etc.); and troubleshoot and solve various problems concerning production and development of various OS platforms.
  • Coordinate the backup and restoration of production Veritas NetBackup Media Manager
  • Identify and mitigate security vulnerabilities and risks concerning anti-virus software, programs and applications design and administer scripting techniques using PowerShell; and monitor and report the quality and relevance of data being captured by all covered systems daily.
  • Develop processing logic and sequence keeping in mind such aspects as hardware, programs, data, procedures, system relations, and ITILv3 best practices; monitor storage allocation; analyze system failures and accomplish corrective procedures; review database performance and application statistics on all systems daily; and initiate corrective action to recover/restore data and return system back to normal operations.
  • Analyze user ad hoc, complex query procedures, special projects and reports and recommend changes as necessary.
  • Modify the storage structure and mapping between databases; provide recommendations for improvement of the storage and mapping of databases; and develop resources for the development and updating of all data code sets used by database management systems, to include item tables, master items lists, and procedure/documentation building.
  • Monitor automated systems and storage to anticipate problems, project trends and identify unusual patterns; report monitoring results to the Government; investigate and report factors such as amount of storage space consumed; access and review time statistics, frequencies of reads and writes, and unusual problems encountered by customers utilizing Database Management Systems (DBMS); maintain programs for local enhancement requirements for statistical analysis of internal activity of the DBMSs; and shall provide support to the Government in monitoring the capability of theater-wide data management equipment to meet mission requirements as user and programmatic demands increase.
  • Maintain approximately 100 servers across multiple classifications. Update and implement security procedures to guard against unauthorized intrusion into application, unauthorized updates, and copying or destruction of the databases. Perform upgrades to software located on the server operating systems, including security updates, virus updates, and vendor-related software fixes and patches.
  • Perform security remediation, implement and maintain DISA STIG requirements, and backups on systems monthly; Receive, acknowledge and plan service outages related to application of all Information Assurance Vulnerability Alerts and system updates.
  • Provide customization recommendations and implement, if approved by the NEC Configuration Control Board (CCB), to meet the needs of different software application packages, hardware connectivity, disk space management, and operating system adjustments; monitor network traffic and avoid or resolve instability caused by viruses, intruders, crashes, and other network threats or problems.
  • Manage system activity logs; remove file systems on systems daily; manage user IDs, passwords, log-on points and access rights on database systems weekly; review server logs daily and troubleshoot and resolve any errors on server systems. The Contractor shall complete approximately 120 work orders/trouble tickets assigned through the Remedy ticketing system per month.
  • Manage active directory to add, update, and delete Active Directory (AD) computer objects as they relate to servers. Add, update, and delete security groups based on customer requirements in accordance with current AD naming conventions and NEC SOPs.
  • Provides testing, engineering, and migration functions for NOS, Applications, and NEC Supported critical services such as Hyper-V, File Services, DHCP (Dynamic Host Configuration Protocol), Print Services, Internet Information Services, Apache, OCSP (Online Certificate Status Protocol), NetBackup, Microsoft SQL, ArcGIS and customer business applications.
  • Report to Chain of Command any encountered problems or reoccurring issues that impact the NEC provided services affecting more than one user, organization, building, and/or site. Service provider will be responsible initiate, update, and close out associated CCIR’s, HAZCON’s, and ASI’s which relate to services provided and supported by them and Systems Administrators.
  • Perform systems administration (SA) tasks on a variety of Operating Systems including: Windows Server, Linux. Tasks include: security updates, OS fixes and patches, IAVA compliance, CONOP documentation, and identify and mitigate security vulnerabilities and risks associated with Windows Server, Linux.



Desired Skills

  • Ability to organize, prioritize and meet deadlines
  • Capable of conveying complex information in a simplistic manner
  • Strong critical thinking and problem- solving skills
  • Strong self-starter requiring minimal supervision
  • Able to take proactive measures to prevent problems rather than reactive by nature
  • Strong verbal and written communication to effectively express concepts, plans, and proposals
  • Must be a U.S. Citizen

Education and Certifications

  • 5+ years of operating systems administration experience
  • Bachelor’s Degree in computer science related field
  • Microsoft Certified Solutions Associate (MCSA), Windows Server 2012 OR Windows Server 2016, and CompTIA certifications Linux+ OR Server +


  • Active Secret Government Security Clearance is required.


  • Compensation is competitive and is commensurate with experience.
  • All qualified applicants will receive consideration for employment without regard to race, color, religion, sex or national origin.
  • Tribalco is an equal opportunity employer.


About Our Company:

Tribalco is a global systems integrator providing mission-critical information technology, telecommunications, and soldier survival solutions to government and commercial customers worldwide. For over 15 years, Tribalco has been providing defense, civilian government, and international customers with advanced engineering, installation, and O&M solutions in the world's most challenging and secure environments.


Founded in 2004, Tribalco is a CMMI® for Services Maturity Level 3 appraised and ISO 9001:2015 certified enterprise. As a named NSA Commercial Solutions for Classified Trusted Integrator, Tribalco develops, integrates, and deploys multi-layered NSA-compliant COTS-based solutions that enable customers to securely create, share, and protect their classified data. With headquarters in Maryland, regional offices in Florida, California, South Korea, and Germany and supporting satellite locations in Hawaii, Japan, The Marshall Islands and the Middle East, Tribalco competes internationally and performs with agility across the globe in dozens of countries. For additional information, please visit www.tribalco.com.