Senior IT & Network Engineer – Cross-Domain Security

Quartermaster AI; Arlington (TX); Hybrid; USD 120,000 - 150,000; Full time

Benefits offered by this job

Hybrid work model

Competitive salary

Medical, dental, vision benefits

Job summary

Quartermaster AI is seeking a hands-on IT Engineer to support IT operations, endpoints, and secure cross-domain networks across multiple sites. You will contribute to provisioning, policy enforcement, and secure data transfer between low-side and high-side environments.

The role requires experience with enterprise network hardware, MDM, and active clearance, collaborating with security teams to meet RMF/ATO requirements in a defense-tech context.

Qualifications

• 6–9 years in IT engineering or network engineering with hands-on build-out.
• Experience securing classified or air-gapped networks is preferred.
• Hands-on endpoint management across macOS, Windows, Linux with MDM.

Responsibilities

• Provide comprehensive IT support from help desk to escalations, across hardware, software, and OS.
• Design and stand up secure network infrastructure across multiple sites.
• Maintain cross-domain environments enabling data movement between classification levels.

Skills

Senior IT engineering

Network engineering

L2/L3 support

Troubleshooting

Scripting (Python/Bash/PowerShell)

Security policy enforcement

Cross-domain data transfer

RMF/ATO experience

MDM and identity management

Education

Bachelor’s degree in IT/CS or equivalent

Tools

Palo Alto NGFW

VPN/Firewall/IDS tooling

Job description

Quartermaster AI is seeking a hands-on IT Engineer to support IT operations, endpoints, and secure cross-domain networks across multiple sites. You will contribute to provisioning, policy enforcement, and secure data transfer between low-side and high-side environments.

The role requires experience with enterprise network hardware, MDM, and active clearance, collaborating with security teams to meet RMF/ATO requirements in a defense-tech context.