Senior Systems Administrator [2022-83]


Infinity is a small business with extensive experience supporting aerospace and defense systems. Make a positive impact and join our Infinity Systems Engineering team who thrive on innovative ideas and meeting challenges for success

Infinity Systems Engineering is seeking a Senior Systems Administrator to join our dynamic Infinity team in Dahlgren, VA!

Summary of Responsibilities:

Responsible for the internal or customer administration, maintenance and management of capacity resources for computers at the operating system and infrastructure level.

Builds, configures, troubleshoots and integrates new and existing servers to provide service enhancements, application deployments and infrastructure upgrades.

Sets up administrator and service accounts, maintains system documentation, tunes system performance, installs system-wide software, and allocates mass storage space.

Recommends software and hardware enhancements, diagnoses and corrects issues, defines and implements new services with the goal of achieving maximum server uptime and availability for the customers.

Responsible for monitoring performance, system usage. Contributes towards the Disaster Recovery Plan (DRP), backup systems and disk configurations.

Conducts system analysis and development to keep systems current with changing technologies.


• Configure, monitor, maintain, troubleshoot VMWare and/or other virtualization technologies

• Experience in VM life-cycle management (snapshots)

• System configuration experience with Enterprise Identity Management tools (LDAP, IPA, Active Directory, etc.)

• Lead efforts to field changes to production systems to a schedule

• Address and detect issues that impact projects and implement/develop courses of action (COAs) to mitigate or alleviate the impact to projects

• DoD 8570.01-M IAT Level 3 certification (e.g. CASP+ CE, CCNP Security, CISA, CISSP (or Associate), GCED, or GCIH)

• Experience with construction and configuration of data Cloud environments such as AWS or GovCloud using government software

• System configuration experience with SANs

• Working knowledge of RMF and cybersecurity requirements

• Previous experience supporting DoD/government customers

• Hardware/software requirement verification/system validation experience

• Demonstrated ability to work and grow in a dynamic, fast paced, team-oriented environment

• Ability to travel up to 10%

• Experience with CM tools

• Establish and maintain up-to-date cybersecurity configurations based on DISA STIGs and IAVM Notices

• Experience implementing patches, scanning, remediating findings, auditing

• Support critical operations during standard and occasional non-standard working hours

• Bachelor’s degree and minimum 6 years of prior relevant experience or Graduate degree and minimum 4 years of prior relevant experience

• 4-6 years of experience with Red Hat Linux Administration or Engineering, 2-4 years of experience with Windows Administration or Engineering • See Degree (above) for additional Years of Experience requirements

Dahlgren, VA

TS/SCI DOD Active security clearance (w/CI Poly, preferred)


$85K - $100K This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location.

U.S. Citizenship is required.
EOE including disability/vet

To learn more about our benefits, please visit: Infinity Careers

UNITED STATES – COVID-19 continues to significantly impact our communities, families and employees. In accordance with Executive Order 14042, effective January 18, 2022, we will require all newly hired employees in the United States to be fully vaccinated prior to their start date.