NSS Linux Systems Administration

Evolver is a cybersecurity and digital transformation company supporting national defense, federal civilian agencies, and Fortune 500 organizations. We help customers secure critical systems, modernize enterprise technology, and solve complex operational challenges through integrated capabilities spanning cybersecurity, enterprise IT infrastructure, cloud, software development, data analytics, legal technology and eDiscovery, applied AI, and electronic security systems. Our teams combine deep technical expertise with mission understanding to deliver secure, reliable, and scalable solutions that advance performance in high-stakes environments.

Evolver is looking for an NSS Linux Systems Administration to support a government program. This role is based in Springfield, VA and requires 5 days a week onsite.

Responsibilities

• Administer and maintain Linux systems operating within high-side / classified environments, ensuring operational stability, performance, and compliance with federal security requirements.
• Perform secure system configuration, patching, and hardening in accordance with DISA STIGs, NIST standards, and agency security policies.
• Manage system lifecycle operations, including provisioning, configuration management, updates, and decommissioning of Linux servers in classified networks.
• Monitor and optimize system performance, storage, and resource utilization across secure infrastructure environments.
• Implement automated system administration scripts and tools to improve operational efficiency and reduce manual intervention.
• Troubleshoot and resolve system outages, configuration issues, and security incidents affecting high-side systems.
• Support secure integration of Linux platforms with identity management, access control, and network security infrastructure.
• Maintain secure backup and recovery processes to ensure continuity of operations in classified environments.

Basic Qualifications

• Active TS/SCI security clearance
• 5 years of hands-on Linux systems administration experience (RHEL, CentOS, or equivalent).
• 3 years of experience performing secure system configuration, patching, and STIG hardening in accordance with DISA STIGs, NIST 800-53, and agency security policies.
• 3 years of experience administering systems within high-side or classified environments, including adherence to federal security and compliance requirements.
• 3 years of experience with system provisioning, configuration management, and lifecycle maintenance for Linux servers.
• 3 years of experience troubleshooting system outages, performance issues, configuration errors, and security-related incidents.
• 3 years of experience with shell scripting or automation tools (Bash, Python, Ansible, etc.) to improve operational efficiency.
• 3 years of experience identity management, access control, and secure integration with enterprise authentication and security services.
• 3 years of experience with secure backup, recovery processes, and continuity-of-operations procedures.
• Ability to work onsite in Springfield, VA, five days per week.

Preferred Qualifications

• Linux certifications such as RHCSA, RHCE, Security+, Linux+, or equivalent.
• Experience working in DoD, Intelligence Community, or other federal classified environments.
• Demonstrated expertise with automation and configuration management tools (Ansible, Puppet, Chef, SaltStack).
• Experience administering virtualized or containerized environments (VMware, KVM, Docker, Podman).
• Familiarity with Zero Trust security principles, IC security controls, and continuous monitoring frameworks.
• Knowledge of networking fundamentals, secure protocols, and troubleshooting within segmented or restricted networks.
• Experience supporting identity and access management solutions (LDAP, Kerberos, SSSD, IPA).
• Proficiency with log analysis and monitoring tools (Splunk, ELK/Elastic Stack, Nagios, Grafana, Prometheus).
• Experience participating in or supporting incident response, security audits, and compliance assessments.
• Strong documentation skills and experience generating system configuration, security compliance, and operational runbooks.

Evolver is an equal opportunity employer and welcomes all job seekers. It is the policy of Evolver not to discriminate based on race, color, ancestry, religion, gender, age, national origin, gender identity or expression, sexual orientation, genetic factors, pregnancy, physical or mental disability, military/veteran status, or any other factor protected by law.

Actual salary will depend on factors such as skills, qualifications, experience, market and work location. Evolver offers competitive benefits, including health, dental and vision insurance, 401(k), flexible spending account, and paid leave (including PTO and parental leave) in accordance with our applicable plans and policies.