System Administrator

What You Will Do

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.

Key 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

Required Skills and Qualifications

• 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

Education and Experience

• Level 0 (SA0): No demonstrated Systems Administrator experience is required. Bachelor’s degree in a technical discipline from an accredited college or university is required. Five (5) years of Systems Administrator experience may be substituted for a bachelor’s degree.
• Level 1 (SA1): Five (5) years of experience as a Systems Administrator supporting 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 Systems Administrator experience may be substituted for a bachelor’s degree.
• Level 2 (SA2): Ten (10) years of experience as a Systems Administrator supporting 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 Systems Administrator experience may be substituted for a bachelor’s degree.
• Level 3 (SA3): Fifteen (15) years of experience as a Systems Administrator supporting 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 Systems Administrator experience may be substituted for a bachelor’s degree.

Preferred Qualifications

• 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

Certifications

• A DoD 8570 IAT Level II baseline certification is required

Clearance Requirement

• Must possess an active TS SCI with appropriate Polygraph to be considered for this role

Why Choose Independent Software

At Independent Software, our people are the mission. We’ve built a company around collaboration, integrity, and innovation and we make sure our team has the tools and support to grow, succeed, and thrive.

When you join us, you will:

• Support critical national security missions that matter
• Be part of a close-knit, employee-first culture where your voice is heard
• Expand your skills through ongoing training, mentorship, and career development
• Enjoy competitive compensation, generous benefits, and work-life balance

Ready to take the next step in your career? Join us and be part of something bigger.