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

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

Job summary

J&T Business Consulting in Annapolis, MD seeks a Mid/Sr System Administrator to support a distributed air-gapped network environment. You will deploy, patch, and optimize server and desktop environments, manage AD and virtualization, and drive security compliance across multiple enclaves.

The role requires active TS/SCI with Polygraph and a strong background in Windows/Linux administration, automation, and vulnerability management. Occasional travel and up to 50 lb handling may be required.

Qualifications

• Bachelor’s degree plus 8 years of relevant sysadmin experience, or equivalent.
• Proficient with Windows Server, AD, and foundational RHEL knowledge.
• VMware virtualization experience and enterprise tool familiarity required.
• Experience with security tooling and patching across air-gapped enclaves.

Responsibilities

• Install, configure, and maintain Windows and Linux servers across air-gapped enclaves.
• Administer Active Directory, domain services, GPOs, and access controls.
• Patch, ship, and secure systems using automated vulnerability tools.
• Manage virtualization, VM provisioning, and hardware reimaging.
• Document architectures for rapid incident response and knowledge sharing.
• Communicate system status and outages to stakeholders and leadership.
• Support occasional local travel and handle physical equipment up to 50 lbs.
• Maintain compliance with security and accreditation requirements.

Skills

Windows Server

Active Directory

RHEL

VMware

Scripting (PowerShell/Python)

Education

Bachelor's degree in Systems Engineering or related field

8+ years of relevant experience in lieu of degree

Tools

SaltStack

Ansible

Splunk

Puppet

SolarWinds

Nessus

Job description

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

Annapolis, United States | Posted on 10/22/2026

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.