Tier 3 Service Desk/System Administrator

Absolute Business Solutions Corp • Arlington, TX

13h • Onsite

About The Position

Absolute Business Solutions Corp (ABSC) is seeking a highly skilled Tier 3 Service Desk/System Administrator to support DIA's National Digital Exploitation and OSINT Center (NDOC) under the 10-year DOMEX Technology Platform (DTP) contract. This role requires deep expertise in operating systems, hardware, GPU, and high-speed networking, with a focus on Linux and Windows systems administration, maintenance, and performance optimization, while also providing exceptional user support. This is a 100% on-site position requiring an Active Top Secret clearance with eligibility for TS/SCI and Polygraph, to be performed at the customer site in Bethesda at the Intelligence Community Campus (ICC-B).

Requirements

• Bachelor's or higher degree. Additional years of experience may be considered in lieu of a degree.
• 4+ years of relevant systems administration experience
• Expertise in Linux systems administration (RHEL/CentOS, Ubuntu).
• Experience with patching (yum/APT repositories) and virtual server builds.
• Familiarity with Agile project management and security requirements derivation.
• Strong scripting skills (Python, Bash).
• Excellent verbal and written communication skills.
• Ability to work independently and collaboratively in a team environment.
• Experience working in air-gapped environments.
• Ability to obtain Privileged User Account (PUA) certification by the Government.
• Active Top Secret clearance with eligibility for TS/SCI and Polygraph.

Nice To Haves

• Experience with Kubernetes, Rancher, and IaC tools like AWS CloudFormation.
• Familiarity with CI/CD tools such as ArgoCD, Jenkins, and GitLab.
• Knowledge of ELK stack (Elasticsearch, Logstash, Kibana) and beats.
• Experience with Active Directory in a Linux environment.
• Background in maintaining AI/ML environments and large data storage solutions.

Responsibilities

• Provide exceptional user support services.
• Leverage expertise in Linux and Windows systems administration.
• Perform systems maintenance and performance optimization.
• Work in air-gapped environments.
• Obtain Privileged User Account (PUA) certification by the Government.

Benefits

• Generous weeks of PTO plus 11 Federal Holidays
• Retirement Planning – 401k Fully Vested with Match
• Annual Health and Wellness Allowance
• Career Development – Annual Funds to Spend on Education and Training
• Volunteer Time Off
• Charitable Match
• Referral Program
• LOV Awards – Earn bonus awards throughout the year
• Generous external referral bonuses

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Number of Employees: 11-50 employees