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Senior System Administrator

Armison Tech
Full Timesenior
McLean, Virginia, USPosted April 8, 2026

Job Description

Armison Tech is a minority owned small business, established in 2012, located in the Northern Virginia area. We're a company predominantly focused on cyber security for our government customers yet our expertise in other areas include big data analytics, instructional design, information management, and computer network infrastructure. We invest in our employees careers by participating in cutting edge cyber security training and attending industry leading conferences. As a small business we offer flexibility and powerful benefits supporting our most important assets, our employees and their families.

Armison Tech is constantly searching for exceptionally qualified technology professionals who would make a great addition to our team. Our staff, just like our clients and the work we do, is what makes Armison Tech a truly effective partner. As we help each of our new employees make adjustments to our operational methods, we make sure every professional is able to handle the workload of each project by resolving any relevant concerns or issues they may have relating to this recent career shift.

Our hiring process seeks to accentuate the raw talent and skill-set of our team members. Along with the importance of experience and education, Armison Tech looks for the superior analytical and communication ability that separates our employees from what we’ve seen while working with some similar companies. Individuals we employ must have a demonstrated ability to excel in high-pressure situations which have a real impact on the modern world so we can continue to keep pace with the competition and the evolving fields of technology.

Currently we have an immediate need to add an experienced:

Senior System Administrator

Location: McLean, VA (on-site client environment)

Clearance: TS/SCI with polygraph

Compensation: Competitive, Excellent Benefits

Only applicants with the active required security clearance and are U.S. Citizens will be reviewed.

In this role you will apply your technical skills to help a team that is dedicated to mission critical training. You will manage a suite of technologies supporting these training courses. This role requires diverse subject matter expertise in managing the hardware, software, networks and systems underpinning the suite's operations, maintenance, development, upgrades, and security.

Desired Qualifications:

  • Must maintain active/current TS/SCI with a polygraph clearance.
  • Demonstrated experience bringing a programmatic discipline to the management of complex systems.
  • Demonstrated experience administering communications, beaconing, and cloud infrastructure solutions.
  • Experience integrating technical systems and managing technically complex programs.
  • Demonstrated experience with system assessment and the Assessment and authorization (A&A) process, as well as handling sensitive data in order to achieve mission outcomes.
  • Demonstrated experience in customizing deploying and maintaining Android cellular phones, as well as using beaconing and tracking hardware, software, scripts, and code.
  • Experience managing cell phones, laptops and tablet devices, all of which require configuration and maintenance while maximizing uptime and communications reliability.
  • Demonstrated experience configuring, monitoring, and troubleshooting firewalls, switches, routers, and other LAN/WAN systems and equipment.
  • Experience using encryption hardware and software, as well as virtual private networks (VPNs).
  • Demonstrated experience utilizing Microsoft cloud-based tools including Office 365, Azure, Entra, Intune, and Teams.

The duties and responsibilities listed in this job description generally cover the nature and level of work being performed by individuals assigned to this position. This is not intended to be a complete list of all duties, responsibilities, and skills required. Subject to the terms of an applicable collective bargaining agreement, the company management reserves the right to modify, add, or remove duties and to assign other duties as may be necessary. We wish to thank all applicants for their interest and effort in applying for the position; however, only candidates selected for interviews will be contacted.

Armison Tech is an equal opportunity employer. All applicants will receive consideration for employment, without regard to race, color, religion, creed, national origin, gender or gender-identity, age, marital status, sexual orientation, veteran status, disability, pregnancy or parental status, or any other basis prohibited by law.

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