Senior Systems Administrator, Linux

Themis Insight, LLC

Senior Systems Administrator managing security automation for clients in Linthicum Heights. Collaborating with teams on infrastructure management and compliance for secure enterprise solutions.

Posted 4/24/2026full-timeLinthicum Heights • Maryland • 🇺🇸 United StatesSeniorWebsite

Tech Stack

Tools & technologies

AnsibleAWSCloudDockerLinuxTypeScript

About the role

Key responsibilities & impact

Facilitate infrastructure management, continuous integration, environment configuration and deployment
Support the project’s compliance and security posture.
Focus on delivering the automation that enables all the other teams to operate smoothly.
Coordinates with the Help Desk to identify/resolve issues at a Tier 2 level

Requirements

What you’ll need

TS/SCI with a Polygraph
Ten (10) years experience as a SA in programs and contracts of similar scope, type, and complexity is required.
Bachelor’s degree in a technical discipline from an accredited college or university is required.
Five (5) years of additional SA experience may be substituted for a bachelor’s degree.
Strong experience in: Linux system administration, Docker, AWS, C2S, or other cloud experience, GitLab Pipeline, Ansible Pipeline.
Familiar with RMF

Benefits

Comp & perks

Competitive health, dental, and vision plans with 100% paid premiums.
401k: We contribute 6% even if you don't!
Time Off: 11 standard holidays, and 25 days of PTO.
Career Development: Get career counseling and individualized career development plans, including education and training.
Employee referral bonuses for successful hires.

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Linux system administrationDockerAWSC2SGitLab PipelineAnsible Pipeline

Soft Skills

facilitationcoordinationproblem-solving

Certifications

TS/SCI with a Polygraph