Senior Linux SysAdmin (TS/SCI+Poly) – On-site Annapolis

J&T Business Consulting; Annapolis (MD); On-site; USD 118,000 - 142,000; Full time

Benefits offered by this job

Health, dental and vision insurance

401(k) with company match

Paid time off and holidays

Tuition reimbursement

Life and disability insurance

Job summary

J&T Business Consulting is seeking an experienced Linux System Administrator (Level 2) in Annapolis Junction, MD. Active TS/SCI with Polygraph is required, with a full-time on-site role and a competitive salary range.

You will manage enterprise Linux and Windows environments, perform upgrades, handle escalations, and support STE data transfer workflows while ensuring reliability and performance of systems across multiple platforms.

Qualifications

• Bachelor’s degree in a technical discipline with 10+ years of Systems Administration experience on similar scope, or 15 years without a degree.
• Linux administration on CentOS 7, Rocky Linux 9, and RHEL 9 with hands-on experience.
• Familiarity with Secure the Enterprise (STE) data transfer workflows and secure data handling.
• RHCSA certification is desired; experience with Ansible automation and Proxmox is a plus.

Responsibilities

• Configure, manage, patch, and maintain enterprise Linux (CentOS 7, Rocky 9, RHEL 9) and Windows OS.
• Provide Tier 1 and Tier 2 troubleshooting for client, server, storage, and network components.
• Execute hardware and software installations, system upgrades, and migrations for servers and workstations.
• Handle STE requirements and authorized data transfer workflows.
• Optimize system operations, capacity planning, and performance analysis.
• Manage ticket escalations, give detailed feedback to stakeholders, and track hardware dispatch resolutions.
• Configure and maintain network component integrity and OS enhancements.

Skills

Linux administration

Troubleshooting

Server maintenance

Education

Bachelor’s degree in a technical discipline

15 years of relevant Systems Administration experience without a degree

Tools

Ansible

Proxmox

PXE network booting

Job description

J&T Business Consulting is seeking an experienced Linux System Administrator (Level 2) in Annapolis Junction, MD. Active TS/SCI with Polygraph is required, with a full-time on-site role and a competitive salary range.

You will manage enterprise Linux and Windows environments, perform upgrades, handle escalations, and support STE data transfer workflows while ensuring reliability and performance of systems across multiple platforms.