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Two Six Technologies

Defense-focused tech firm delivering cyber solutions

Senior System Engineer

System Administration +1Confirmed live in the last 24 hours
Full-timeHerndon, VA, USA$140k - $208k /yr

About the Job

Requirements

  • At least 5 years of experience supporting an Intelligence Community classified network, such as JWICS, as a Systems Engineer, Network Engineer, or Network Administrator.
  • A bachelor's degree in Cybersecurity, Computer Science, Information Security, or a related field, or advanced professional industry certifications and additional experience as a substitute.
  • An 8140 certification such as Security+, GCISP, GSEC, SSCP, CASP+, CISM, CISSP, or CCNA.
  • Solid experience supporting Windows servers and workstations.
  • Working knowledge of the Linux environment.
  • Solid experience working with routers, switches, and firewalls.
  • Experience building a firewall.
  • Experience setting up network-attached storage.
  • Working knowledge of tools such as ServiceNow and Talon.
  • Working knowledge of government regulations such as the DCSA Assessment and Authorization Process Manual, NIST SP 800-53, and NIST SP 800-171.
  • Basic understanding of a security compliance matrix.
  • Active TS/SCI with polygraph clearance.

Responsibilities

  • Engineer, administer, and maintain the classified network.
  • Engineer and maintain networks for classified and unclassified use.
  • Install, configure, administer, and maintain Windows and Linux servers and workstations.
  • Administer user accounts and access control within information systems, including creating accounts, assigning permissions, and enforcing security access policies to ensure compliance.
  • Troubleshoot and resolve technical issues.
  • Perform system backups and data recovery.
  • Provide on-call support for outages as needed.

Desired Qualifications

  • Experience building a classified network.

About the Company

Two Six Technologies

Defense-focused tech firm delivering cyber solutions

Two Six Technologies delivers advanced defense-focused tech through rapid R&D in cybersecurity, information operations, data science, electronic systems, mobility, and user experience for U.S. national security clients. Its products and services are built via project-based government contracts, creating custom tools (such as Pulse) tailored to mission needs. The company differentiates itself through direct government partnerships, interdisciplinary expertise, and a focus on delivering mission-ready, actionable solutions rather than generic tech. Its goal is to provide technological superiority for the United States and its partners by enabling rapid, impactful innovation that strengthens national security and defense capabilities.

Company size
501-1,000
Company stage
Early VC
Total funding
$67.9M
Headquarters
Arlington County, VA
Founded
2021

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