Systems Administrator

Markon•Herndon, VA

13d•$190,000 - $210,000

About The Position

Markon is seeking an experienced Systems Administrator to support and maintain enterprise IT infrastructure in a secure, mission-focused environment. The ideal candidate will have deep experience managing Linux and Windows environments, implementing security best practices, and supporting complex server ecosystems.

Requirements

Active TS/SCI w/ Full Scope Polygraph
Minimum 10 years of experience in configuration management and enterprise systems administration
Bachelor’s degree (or higher) in Computer Science, Information Systems, Engineering, Mathematics, or a related technical field
Demonstrated team-based experience supporting: Linux and Windows servers Oracle database servers DNS servers and domain controllers Network storage devices HP servers
Experience designing, configuring, and installing enterprise information systems including routers, switches, servers, storage systems, and end-user devices
Experience designing and implementing Microsoft Windows-based domains

Nice To Haves

Experience supporting the full DevOps lifecycle, including build pipeline integration, automated deployments, compliance scanning, and test-driven development
Experience deploying, provisioning, operating, and maintaining Linux environments (CentOS and Ubuntu)
Experience implementing and maintaining systems in compliance with Information Security (INFOSEC) and Information Assurance (IA) policies (e.g., ICD 503)
Experience implementing development and testing automation tools and IT infrastructure solutions
Experience managing virtualized infrastructure environments

Responsibilities

Monitor system logs, applications, and infrastructure health on a daily basis; implement automation wherever possible
Perform system backups and data archiving in accordance with Sponsor-approved schedules
Harden Linux systems following information security engineering principles and industry best practices
Maintain and administer enterprise server environments, including: Windows Servers Linux Servers Oracle Database Servers Apache Servers DNS Servers Domain Controllers
Apply server patches and operating system updates in accordance with ISSM requirements; automate patching processes when feasible
Assist with hardware and software procurement, installation, and implementation
Manage software licensing and ensure renewals are completed in a timely manner
Obtain required Sponsor waivers as needed
Submit Discrepancy Reports (DRs) and Requests for Change (RFCs) through appropriate channels
Collaborate closely with the Information Systems Security Manager (ISSM) and customer security teams
Recommend and implement improvements to system reliability, availability, and maintainability