Senior Systems Administrator

Posted Yesterday
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San Diego, CA, USA
In-Office
Senior level
Cybersecurity
The Role
Administer and maintain secure Windows, cloud, virtualization, storage, and network infrastructure supporting national security systems. Configure TACLANE encryptors, troubleshoot outages, manage accounts and incidents, execute patching and vulnerability remediation, harden systems, conduct site surveys, and coordinate equipment logistics. The role requires an active Top Secret clearance with SCI eligibility, DoD certification, overnight shift availability, potential weekend or holiday coverage, and up to 25% CONUS/OCONUS travel.
Summary Generated by Built In

Join Tau Six, an agile small company that delivers cutting edge cybersecurity and system integration services to the US National Security market. We have an immediate need for a Senior Systems Administrator and are seeking a motivated self-starter with experience in secure information systems to join a team of professionals and help defend national security systems.

This Senior Systems Administrator position supports national security by maintaining critical enterprise infrastructure, troubleshooting site outages, and executing dual network and system administration to ensure continuous operational readiness and incident response support. Duty hours for this position run from 1:00 AM - 9:00 AM Pacific time.

CLEARANCE REQUIRED: Active Top Secret clearance with SCI eligibility  

Responsibilities: 

  • Administer, configure, and maintain Windows servers, workstations, domain controllers, cloud resources, VMware, and enterprise storage 
  • Configure, maintain, and troubleshoot KG-175 (TACLANE) cryptographic inline network encryptors, troubleshoot network connectivity, baseline routers/switches, and perform rapid troubleshooting for critical site outages 
  • Perform user account management, log and triage ticketing system incidents, and resolve or escalate technical issues 
  • Perform automated patching, vulnerability remediation (ACAS/Nessus), system hardening, and media transfers in coordination with the ISSO 
  • Perform remote site surveys, identify hardware and cabling requirements, configure baseline hardware, and handle equipment shipping and inventory 
  • Ability to consistently work the assigned 1:00 AM - 9:00 AM shift (including potential weekend or holiday coverage) and travel up to 25%, both CONUS and OCONUS as required

Minimum Qualifications: 

  • Bachelor’s degree with 4+ years of information technology or related experience; an Associates degree with 6+ years of related experience, or High School Diploma with 10+ years of related experience can be substituted in lieu of a degree 
  • DoD 8140.03 certification required (e.g., Security+ CE or equivalent) 
  • 2+ years of direct experience in a Network Administrator or Systems Administrator role 
  • 4+ years of experience designing, deploying, and maintaining enterprise Windows infrastructure, ex., AD, DHCP, DNS, NTP, CA, GPO or WSUS
  • Experience configuring and managing TACLANE family encryptors 
  • Experience troubleshooting site outages, routing or switching issues and performing user account resets and management

Preferred Qualifications:

  • Degree in IT/Cybersecurity from an ABET-accredited or CAE-designated institution
  • DoD 8140.03 Intermediate Certification (eg. Cloud+, GICSP, SSCP, or GSEC) or military equivalent
  • ITIL v4 Foundations or MCSA certifications
  • Demonstrated technical proficiency with VMware/ESXi virtualization, patch management, Linux (RHEL) familiarity, SIEM tools, and backup/recovery protocols

Security Requirements:

  • Must possess an active Top Secret clearance with SCI eligibility and willingness to submit to a polygraph

Physical Requirements:

  • Must be able to remain in a stationary position 50% of the time
  • Must be able to move within the office to access machinery and communicate effectively via virtual / phone platforms
  • Must be able to regularly lift up to 50 lbs

Skills Required

  • Bachelor’s degree with 4+ years of IT or related experience; associate degree with 6+ years or high school diploma with 10+ years may substitute
  • DoD 8140.03 certification, such as Security+ CE or equivalent
  • 2+ years of direct Network Administrator or Systems Administrator experience
  • 4+ years designing, deploying, and maintaining enterprise Windows infrastructure, including AD, DHCP, DNS, NTP, CA, GPO, or WSUS
  • Experience configuring and managing TACLANE family encryptors
  • Experience troubleshooting site outages, routing or switching issues, and user account resets and management
  • IT or Cybersecurity degree from an ABET-accredited or CAE-designated institution
  • DoD 8140.03 Intermediate Certification, such as Cloud+, GICSP, SSCP, or GSEC, or military equivalent
  • ITIL v4 Foundations or MCSA certification
  • Technical proficiency with VMware/ESXi virtualization, patch management, Linux/RHEL, SIEM tools, and backup/recovery protocols
  • Active Top Secret clearance with SCI eligibility
  • Willingness to submit to a polygraph
  • Ability to work the assigned 1:00 AM–9:00 AM Pacific shift, including potential weekend or holiday coverage
  • Ability to travel up to 25% CONUS and OCONUS
  • Ability to remain stationary 50% of the time, move within the office, communicate through virtual and phone platforms, and regularly lift up to 50 pounds
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The Company
HQ: Chantilly, VA
14 Employees
Year Founded: 2016

What We Do

Tau Six was founded with a plan to build a highly strategic, national security company, with specialized capabilities in cyber security, risk management, and secure system development & integration. Intellectual property, privacy act protected information, critical command and control systems, and national security data are increasingly compromised by sophisticated cyber attacks. Working in partnership with our customers, Tau Six helps organizations plan and implement an integrated cyber strategy to minimize cyber security risk, increase mission assurance, and improve customer and organizational privacy. Tau Six works together with our customers to assess vulnerabilities and threats, prioritize mitigation approaches based on the latest technology and best practices, and implement a comprehensive cyber security strategy.

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