On Call Msp System Administrator Jobs (NOW HIRING)

What You Will Do:
At Independent Software, as a Systems Administrator, all levels, 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.
Key Responsibilities:
 

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

• Experience administering Linux systems in enterprise or operational environments
• Experience with scripting and automation using Bash, Perl, Python, or similar languages
• Experience supporting enterprise storage management solutions
• Experience with KVM virtualization technologies
• 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 supporting cloud infrastructure and AWS environments
• Experience with FreeIPA administration and integration
• Understanding of SSP compliance and STE/STN support requirements
• Strong troubleshooting and problem-solving skills
• Ability to work independently and collaboratively within operational teams
• Strong written and verbal communication skills

• 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.

• Experience supporting secure DoD or Intelligence Community systems
• Experience supporting highly available enterprise Linux environments
• Experience supporting operational or mission-critical infrastructure
• Experience with enterprise monitoring and performance tuning
• Experience supporting mixed-platform enterprise environments

• 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

• 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.
Apply today.
We’re an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.
 

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