Senior System Administrator - TS/SCI w/ Poly

Cornerstone Defense; Annapolis (MD); On-site; USD 190,000 - 210,000; Full time

Benefits offered by this job

Medical, Dental & Vision Plans

Generous PTO

401(k)

Job summary

Cornerstone Defense is seeking a Senior System Administrator to support secure enclave development networks in Annapolis Junction, MD. The role focuses on maintaining operability, implementing SOPs, and enforcing security baselines across Windows and Linux servers with VMware infrastructure.

Requirements include TS/SCI with polygraph, DoD IAT Level II (Security+), and extensive experience in system hardening, RMF, and network access control.

Qualifications

• Bachelor's degree in a technical discipline or equivalent experience in a system admin role.

Responsibilities

• Conduct functional and connectivity testing to ensure continuing operability.
• Develop and document systems administration SOPs.
• Maintain baseline system security according to policies.
• Manage accounts, network rights, and access to systems and equipment.
• Plan, execute, and verify data redundancy and recovery procedures.
• Install, update, and troubleshoot systems and servers.
• Implement and enforce local network usage policies and procedures.
• Monitor and maintain system and server configurations.
• Troubleshoot hardware/software interface and interoperability problems.

Skills

Windows Server Admin

Active Directory

Group Policy

Linux Server Admin

Networking / Switching & Router Mgmt

System hardening

Security Compliance Scanning

RMF compliance

DoD IAT II (Security+)

Customer service & communication

Education

Bachelor's degree in technical discipline

High school diploma + 20 years system admin experience

Tools

Broadcom VMware ESXi

Broadcom vCenter

Broadcom VMware Aria Suite

Broadcom VMware Cloud Foundation (VCF)

Broadcom VMware certification

NetApp Storage

Nessus

ACAS

PowerCLI

Job description

Cornerstone Defense is seeking a Senior System Administrator to support secure enclave development networks in Annapolis Junction, MD. The role focuses on maintaining operability, implementing SOPs, and enforcing security baselines across Windows and Linux servers with VMware infrastructure.

Requirements include TS/SCI with polygraph, DoD IAT Level II (Security+), and extensive experience in system hardening, RMF, and network access control.