Senior Linux & Windows SysAdmin - Onsite TS/SCI

Piper Companies; Maryland; On-site; USD 140,000 - 200,000; Full time

Benefits offered by this job

Health benefits

Vision benefits

Dental benefits

PTO and paid holidays

Job summary

Piper Companies is seeking a Sr. Linux & Windows System Administrator to support a mission-driven government contracting and cybersecurity environment in Annapolis Junction, MD.

The role is onsite and requires an active TS/SCI with Full Scope Polygraph. You will maintain secure, compliant enterprise Linux and Windows servers, monitor performance and security, and participate in vulnerability management using Nessus and Splunk.

Qualifications

• Minimum 10 years of enterprise system administration experience.
• Strong experience with both Linux and Windows operating systems.
• Hands-on IT security compliance, auditing, and best practices.

Responsibilities

• Administer, maintain, and troubleshoot enterprise Linux and Windows server environments.
• Monitor system performance, availability, and security across environments.
• Support IT security compliance initiatives and ensure regulatory standards are met.
• Utilize Splunk for log aggregation, monitoring, and security investigations.
• Perform vulnerability assessments and remediation using Nessus and related tools.
• Implement patches, upgrades, and config changes with minimal downtime.
• Collaborate with cybersecurity, engineering, and operations teams to improve security posture.
• Develop and maintain technical docs and SOPs.
• Troubleshoot hardware, software, network, and infrastructure issues.

Skills

Linux

Windows

Splunk

Nessus

Cybersecurity

Troubleshooting

Problem-solving

Education

Security+ CE

Tools

Splunk

Nessus

Job description

Piper Companies is seeking a Sr. Linux & Windows System Administrator to support a mission-driven government contracting and cybersecurity environment in Annapolis Junction, MD.

The role is onsite and requires an active TS/SCI with Full Scope Polygraph. You will maintain secure, compliant enterprise Linux and Windows servers, monitor performance and security, and participate in vulnerability management using Nessus and Splunk.