System Administrator

Independent Software•Columbia, MD

About The Position

At Independent Software, as a Systems Administrator you will support secure, mission-critical infrastructure across Linux and mixed Linux/Windows enterprise environments. This role supports a wide range of operational systems including virtualized infrastructure, containerized platforms, cloud-hosted environments, and automated system administration solutions supporting DoD and Intelligence Community missions. Depending on experience level, you will assist with or lead system administration, troubleshooting, automation, virtualization, compliance support, and operational sustainment activities across complex enterprise environments. This position is ideal for candidates who enjoy working hands-on with Linux systems, automation tools, virtualization platforms, and secure operational environments while supporting highly available mission systems.

Requirements

Experience administering Linux systems in enterprise or operational environments
Experience with scripting and automation using Bash, Perl, Python, or similar languages
Experience with configuration management and automation tools such as Ansible or SALT
Experience with virtualization technologies such as Proxmox or similar platforms
Experience supporting containerized environments
Understanding of SSP compliance and STE/STN support requirements
Experience supporting cloud infrastructure and AWS environments
Experience with CIFS and Centrify within enterprise environments
Strong troubleshooting and problem-solving skills
Ability to work independently and collaboratively within operational teams
Strong written and verbal communication skills
A DoD 8570 IAT Level II baseline certification) is required
Must possess an active TS SCI with appropriate Polygraph to be considered for this role

Nice To Haves

Experience administering Windows Server environments
Experience supporting Windows Domain Controllers
Experience supporting Microsoft Exchange environments
Experience supporting secure DoD or Intelligence Community systems
Experience supporting mixed-platform enterprise environments

Responsibilities

Deploy, configure, maintain, and troubleshoot Linux-based systems and enterprise infrastructure
Support mixed Linux and Windows operational environments
Administer and maintain containerized environments and virtualization platforms including Proxmox
Develop and maintain automation solutions using Ansible, SALT, and scripting languages such as Bash, Perl, or Python
Support system hardening, patching, upgrades, and lifecycle management activities
Maintain compliance with SSP documentation and STE/STN security requirements
Support cloud-hosted infrastructure and AWS-based environments
Configure and maintain CIFS and Centrify integrations within enterprise environments
Troubleshoot system, application, network, and infrastructure-related issues
Support operational monitoring, system reliability, and performance optimization
Develop and maintain technical documentation and operational procedures
Collaborate with engineering, security, and operations teams to support mission requirements
Participate in on-call support and maintenance activities as required