Mid/Sr System Administrator (TS/SCI Clearance with Full Scope Polygraph Required)

J&T; Annapolis (MD); On-site; USD 100,000 - 200,000; Full time

Benefits offered by this job

Health, Dental, Vision Insurance

Life and Disability Insurance

PTO and Holidays

401(k) with company match

Tuition Reimbursement

Job summary

J&T in Annapolis Junction, MD seeks a Mid/Sr System Administrator to support a large distributed network. You will deploy, patch, and optimize air-gapped server and desktop environments, drive security compliance, and troubleshoot complex hardware/software issues to maximize uptime.

The role requires a TS/SCI with Poly clearance, a technical degree with 8+ years' experience, and hands-on expertise with Windows Server, AD, RHEL, VMware, and enterprise tools.

Qualifications

• Bachelor's degree in a technical field plus 8 years of sysadmin experience.
• Active TS/SCI with Polygraph clearance required.
• Proficiency with Windows Server 2019, AD, and RHEL basics.
• Experience with virtualization (VMware) and enterprise tools (Splunk, Nessus).

Responsibilities

• Install, configure, optimize, and maintain Windows/Linux servers in air-gapped enclaves.
• Administer AD, domain services, group policies, and access controls.
• Perform vulnerability management and security patching using automated tools.
• Manage virtualization, VM provisioning, and hardware reimaging.
• Document server and network architectures for rapid incident response.
• Communicate system status and maintenance to stakeholders.

Skills

Windows Server 2019

Active Directory

RHEL knowledge

VMware virtualization

SaltStack / Ansible

Splunk / SolarWinds / Nessus

PowerShell / Python scripting

Patching & hardening

Education

Bachelor's degree in Systems Engineering / CS / IS / ENG Management

8+ years hands-on systems administration experience

Tools

SaltStack

Ansible

Splunk

Puppet

SolarWinds

Nessus

VMware

Windows Server / Linux admin tooling

Job description

Clearance Requirement: Active TS/SCI with Polygraph

Salary Range: $100,000 - $200,000 / year (dependent on experience, education, and skill set)

About the Role

Seeking an energetic and experienced Mid/Sr System Administrator to support a large, complex, and geographically distributed network environment in Annapolis Junction, MD.

In this role, you will deliver full-lifecycle systems administration, operations, and maintenance across multiple air-gapped enclaves, each featuring dedicated domains, storage architectures, and network infrastructure. You will be responsible for deploying, patching, and optimizing server and desktop environments, driving security compliance, and troubleshooting complex hardware and software issues to ensure maximum operational uptime.

Key Responsibilities

• Install, configure, optimize, and maintain Windows and Linux server/desktop configurations across complex, air-gapped enclaves.
• Administer, sustain, and troubleshoot web-based information sharing and storage application environments.
• Manage Active Directory, domain services, group policies, certificate renewals, and access controls.
• Execute system scanning, vulnerability management, security patching, and vulnerability mitigation using automated tools.
• Perform client and server virtualization management, virtual machine provisioning, and hardware reimaging/troubleshooting.
• Maintain comprehensive documentation of server and network architectures to facilitate rapid incident response and knowledge sharing.
• Communicate system status, scheduled maintenance, and outage resolutions with end users, technical teams, and program leadership.
• Support occasional short-duration local/day travel and handle physical equipment handling (up to 50 lbs).

Required Qualifications & Experience

Security Clearance: Active TS/SCI with Polygraph.

Education & Experience:

• Bachelor's degree in Systems Engineering, Computer Science, Information Systems, Engineering Management, or a related technical discipline plus at least 8 years of relevant systems administration experience, OR
• Equivalent combination of additional years of hands-on technical experience substituting for the degree.

Operating Systems & Directory Services: Proficiency with Windows Server 2019, Active Directory, and foundational knowledge of Red Hat Enterprise Linux (RHEL).

Virtualization: Hands-on experience administering client and server virtualization platforms (e.g., VMware).

Enterprise Tools: Demonstrated familiarity with enterprise monitoring, automation, and security tools (e.g., SaltStack, Ansible, Splunk, Puppet, SolarWinds, Nessus).

Hardware & Operations: Proven ability to install, configure, troubleshoot, reimage, back up, and restore enterprise server and desktop hardware.

Physical & Travel Requirements: Ability to lift up to 50 lbs and support occasional day or short-duration travel.

Desired Qualifications

• Proficiency with Microsoft SQL Server administration.
• Automation and scripting experience using Python, SaltStack, PowerShell, and PowerCLI.
• Background supporting software configuration management and development staging environments.
• Experience working within Agile frameworks and delivery teams.
• Working knowledge of PKI architectures utilizing Hardware Security Modules (HSMs) and NTP synchronization.
• Experience generating documentation and technical evidence for system security authorization and accreditation packages.

Benefits & Compensation

This position offers a comprehensive benefits package designed to support employees both personally and professionally:

• Comprehensive Health, Dental, and Vision Insurance
• Basic Life and Disability Insurance
• Paid Time Off (PTO) and Paid Holidays
• 401(k) Retirement Plan with Company Match
• Tuition Reimbursement for ongoing education and professional development

An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected under federal, state, or local law.