Systems Administrator III [Remote]

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Systems Administrator III in United States.

This is an opportunity for an experienced systems administrator to support mission-critical federal research and operational environments. In this role, you will manage and optimize multi-platform infrastructure spanning UNIX/Linux, Windows, and macOS systems while ensuring high availability, security compliance, and operational resilience. You will play a key role in supporting scientific and national-scale network programs, contributing to cloud, virtualization, and enterprise systems initiatives. The position combines hands-on technical administration with cybersecurity responsibilities, including vulnerability management and federal compliance alignment. Working in a highly collaborative and mission-driven environment, you will also support incident response, system modernization, and infrastructure improvements. This role is ideal for a professional who thrives in complex environments where reliability, security, and continuous improvement are essential.

Accountabilities:

• Administer, configure, maintain, and upgrade enterprise systems across UNIX/Linux, Windows, and macOS environments, ensuring stability and performance.
• Install software releases, apply system patches, and troubleshoot technical issues across multi-platform infrastructure.
• Manage system security configurations in alignment with Federal cybersecurity frameworks, including FISMA, NIST 800-53, and RMF requirements.
• Perform system backup, recovery operations, and contribute to enterprise backup architecture planning and data integrity assurance.
• Support network and infrastructure components including DNS, DHCP, firewalls, VPNs, load balancing, and web services.
• Conduct vulnerability scanning and coordinate remediation efforts in accordance with security policies and compliance standards.
• Support Assessment & Authorization (A&A) processes and Risk Management Framework (RMF) documentation and activities.
• Maintain system documentation including operational procedures, design specifications, and test plans.
• Monitor, triage, and resolve service tickets while maintaining logs and system visibility using tools such as Graylog and BigFix.
• Support virtualization, containerization, and cloud infrastructure environments, contributing to system scalability and modernization.
• Participate in on-call rotations and respond to critical incidents to ensure continuity of operations.
• Assist with IT asset management, inventory tracking, and infrastructure lifecycle planning.
• Provide guidance and mentorship to junior systems administration staff as needed.

Requirements:

• Bachelor’s degree in Computer Science, Information Technology, or a related field, or equivalent professional experience.
• 4–6 years of enterprise systems administration experience in multi-platform environments.
• Strong proficiency in UNIX/Linux systems administration, including shell scripting and command-line tools.
• Extensive experience with Windows Server administration, Active Directory, and desktop environments.
• Solid understanding of networking fundamentals including TCP/IP, DNS, DHCP, VPNs, and firewall configuration.
• Experience with patch management, system hardening, vulnerability scanning, and security best practices.
• Familiarity with Federal cybersecurity frameworks such as FISMA, NIST 800-53, and RMF compliance requirements.
• Experience with enterprise backup and recovery tools such as Druva or equivalent platforms.
• Ability to manage complex technical environments independently and make sound operational decisions.
• Strong troubleshooting, analytical, and problem-solving skills in high-availability environments.
• Excellent communication skills and ability to collaborate with technical and non-technical stakeholders.
• U.S. citizenship or authorization to work in the United States and ability to obtain and maintain a Public Trust clearance.
• Experience with virtualization (VMware, KVM), containerization (Docker, Kubernetes), or cloud platforms is a plus.
• Familiarity with tools such as Jamf Pro, BigFix, Graylog, PDQ, Jira, or ServiceNow is highly desirable.

Benefits:

• Competitive annual salary of $115,000 .
• Comprehensive health, dental, and vision insurance coverage.
• Paid time off and sick leave.
• 401(k) retirement plan with company match.
• Health Savings Account (HSA) and Flexible Spending Account (FSA) options.
• Life insurance and short- and long-term disability coverage.
• Pet insurance and wellness program initiatives.
• Flexible work arrangements and hybrid support where applicable.
• Exposure to mission-critical federal infrastructure and research environments.
• Professional development and opportunities for technical growth.
• Inclusive and equal opportunity workplace culture.

How Jobgether works:

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team.

We appreciate your interest and wish you the best!

Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time.

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We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.