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SOSi

Defense, intelligence, and logistics solutions provider

Systems Administrator

System AdministrationConfirmed live in the last 24 hours
Full-timeHonolulu, HI, USA$110.3k - $148.9k /yr

About the Job

Requirements

  • Active in-scope Secret clearance.
  • DoD 8570 IAT-II compliance, such as Security+ CE, CASP+, CND, or SSCP.
  • Server Administration (Microsoft or Linux+) certification at hire.
  • At least 6 years of experience in systems administration, security operations, or enterprise IT service center operations.
  • Extended knowledge of modern operating systems, including Windows and Linux, and related security configuration.
  • Comprehensive knowledge of IT systems administration, troubleshooting, and support principles, methods, and techniques, especially Microsoft Windows Server technologies, including Active Directory (Domain Controllers, User/Group Accounts, Computer Objects, and Group Policy Objects), DNS, DHCP, File/Print, Exchange, SharePoint, SQL Server, and WSUS.
  • Experience implementing and supporting Virtual Desktop Infrastructure (VDI) and virtual environments and solutions, such as Citrix, VMware, Azure Cloud/Hyper-V, or Nutanix AHV.
  • Knowledge of system security best practices and compliance standards, including government Secure Technical Implementation Guidelines (STIGs).
  • Familiarity with hyperconverged infrastructure (HCI), authentication protocols, and command-and-control (C2) applications.
  • Ability to support 24/7 operations, including exercises, when necessary.
  • Ability to follow instructions and work independently and in a distributed team environment.

Responsibilities

  • Install, update, and monitor servers and hosted applications, including network-attached clients, user/service accounts, and related component systems in a virtual infrastructure.
  • Provide Tier-2 support for systems-related issues and secure, modify, and troubleshoot IT systems and related components in accordance with change control processes.
  • Proactively monitor the server environment, measure performance, and report operational status.
  • Troubleshoot, research, and resolve issues with server systems and related components.
  • Respond to server-infrastructure incidents and related core services.
  • Accurately and promptly update incident and service-request tickets; investigate and document root causes.
  • Coordinate and communicate with internal and external teams, including users and partners.
  • Secure solution components according to Department of Defense (DoD) guidelines.
  • Develop and update systems documentation for new, current, and legacy technologies, as well as DoD accreditation requirements.
  • Provide guidance and training to administrators, staff, and end users on assigned systems.
  • Provide status updates and briefings to management and government customers as required, and complete activity reports in accordance with contract requirements.
  • Research and collaborate with team members to troubleshoot, upgrade, or install services.
  • Leverage team expertise to address complex technical issues, streamline installation processes, and implement upgrades that enhance service performance and reliability.
  • Ensure custody and ownership compliance for government equipment and related components.
  • Assist with the life cycle of IT equipment, including receiving, inventory, reporting, and disposal.
  • Participate in related solution technologies and special projects as required.

Desired Qualifications

  • Microsoft Certified: Windows Server Hybrid Administrator or Red Hat Certified Systems Administrator (RHCSA).
  • Relevant IT certifications, such as Citrix, Dell, HP, ITIL, Microsoft, Nutanix, or VMware.
  • Well-versed in Department of Defense (DoD) protocols, procedures, and regulations.
  • Familiarity with operating in classified environments.
  • Prior help desk or software experience, such as Jira, Remedy, or ServiceNow.
  • Awareness or experience with the ITIL framework and ITIL best practices.

About the Company

SOSi

Defense, intelligence, and logistics solutions provider

SOSi provides defense and government solutions, delivering data science, software, network engineering, ISR, language services, and logistics to government customers across 16+ countries. Its offerings include data-centric, zero-trust networks, AI-powered intelligence platforms, and cloud-native solutions that help U.S. and allied forces operate and decide. The company differentiates itself through founder-led leadership, a large veteran workforce, and a technology-first approach that combines engineering with mission delivery in national security contexts. Its goal is to provide trusted, mission-ready technology and support that strengthen the capabilities of U.S. and allied forces wherever they operate.

Company size
1,001-5,000
Company stage
Not listed
Total funding
Not listed
Headquarters
New York City, New York
Founded
1989

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