Senior IT Systems Architect & Administrator (Hybrid, TS)

SIXGEN; Sterling (VA); Hybrid; USD 85,000 - 110,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Life insurance

4% 401(k) employer contribution

Training reimbursement

Flexible/Remote work policy

Flexible PTO

Job summary

SIXGEN seeks an I.T. Specialist to join our Sterling, VA team. The role focuses on system administration, security, and support for federal customers. You will work a mix of in-office and remote duties, with a TS clearance and a requirement for deep IT expertise.

Ideal candidates bring Linux and Windows experience, PKI/encryption knowledge, and proficiency with Proxmox VE and Docker. Collaborative, flexible, and ready for on-call tasks are valued at SIXGEN.

Qualifications

• 10+ years IT experience
• TS clearance required
• Hybrid work model with in-office and WFH
• Strong skills across Linux, Windows, and network admin

Responsibilities

• Provide IT support to federal customers and internal teams
• Design, deploy, and maintain secured IT environments
• Collaborate with administration and engineering teams for system improvements
• Respond to after-hours maintenance and emergencies as needed

Skills

Linux administration

Windows Server/Active Directory

Networking

Scripting: Bash/Python/PowerShell

PKI and encryption

Proxmox VE and Docker

System administration

Public/secure networks

Tools

Proxmox VE

Docker

Job description

SIXGEN seeks an I.T. Specialist to join our Sterling, VA team. The role focuses on system administration, security, and support for federal customers. You will work a mix of in-office and remote duties, with a TS clearance and a requirement for deep IT expertise.

Ideal candidates bring Linux and Windows experience, PKI/encryption knowledge, and proficiency with Proxmox VE and Docker. Collaborative, flexible, and ready for on-call tasks are valued at SIXGEN.