Senior Systems Administrator – TS/SCI Poly Required

2HB Incorporated; Maryland; On-site; USD 90,000 - 140,000; Full time

Job summary

2HB Incorporated is seeking a Senior Systems Administrator in Annapolis Junction, MD. The position requires a TS/SCI/full-scope polygraph clearance and a strong background in Windows Server, Linux, VMware, and security compliance.

You will manage access, server resources, and data recovery, while documenting SOPs and enforcing policies. The candidate should have extensive system hardening experience, RMF understanding, and the ability to troubleshoot complex hardware/software interfaces,

Qualifications

• Requires 15+ years of System Administration experience or 20 years with a HS diploma.
• Experience with Windows Server, AD, Group Policy; proficient with Linux server administration.
• VMware ESXi/vCenter; storage (NetApp); networking; security scanning (Nessus/ACAS).
• Familiar with RMF security requirements and DoD IAT Level II certifications.
• Ability to document procedures, maintain systems, and communicate clearly.

Responsibilities

• Conduct functional and connectivity testing to ensure operability.
• Develop and document system administration SOPs.
• Maintain baseline system security per policies.
• Manage accounts, access, and rights to systems and equipment.
• Plan and verify data redundancy and system recovery procedures.
• Install, update, and troubleshoot hardware and software across servers.
• Enforce local network usage policies; ensure system configurations are compliant.
• Monitor system resources: performance, capacity, availability, serviceability, recoverability.
• Troubleshoot hardware/software interfaces and interoperability issues.

Skills

Customer service

Oral and written communication

Problem solving

Security awareness

TS/SCI clearance

Education

Bachelor's degree in a technical discipline + 15 years' experience

High school diploma + 20 years' experience

Tools

Windows Server Administration

Active Directory

Group Policy

Linux Server Administration

VMware/ESXi

VMware vCenter

Networking Switching/Router Management

VMware Virtual Networking

Storage Management (NetApp)

System hardening

Security Compliance Scanning (Nessus, ACAS)

RMF requirements

DoD IAT Level II certs (CCNA-Security, CySA+, etc)

Job description

2HB Incorporated is seeking a Senior Systems Administrator in Annapolis Junction, MD. The position requires a TS/SCI/full-scope polygraph clearance and a strong background in Windows Server, Linux, VMware, and security compliance.

You will manage access, server resources, and data recovery, while documenting SOPs and enforcing policies. The candidate should have extensive system hardening experience, RMF understanding, and the ability to troubleshoot complex hardware/software interfaces,