Senior Network Engineer – Secret Clearance (DoD, Onsite)

SandTech; Washington (District of Columbia); On-site; USD 120,000 - 160,000; Full time

Job summary

SandTech is seeking a Senior Network Engineer to support enterprise networks at Joint Base Anacostia-Bolling in Washington, DC. The role requires an active DoD Secret clearance and hands-on experience with high-speed, secure network environments.

You will monitor, troubleshoot, and optimize network infrastructure, coordinating with providers and vendors, and leading change within security and DoD requirements. This is a full-time, onsite position with potential mission-driven telework.

Qualifications

• Five years of complex network troubleshooting experience.
• Experience designing and operating high-speed enterprise networks.
• Strong knowledge of switching, VLANs, STP, L2/L3 troubleshooting.
• Experience with routing technologies, including OSPF and other enterprise routing protocols.
• Plan network enhancements within change management and security requirements.

Responsibilities

• Monitor enterprise networks and respond to alerts, outages, and performance anomalies.
• Troubleshoot complex Layer 1 through Layer 3 network, circuit, and hardware issues.
• Configure, maintain, and optimize routers, switches, and enterprise network appliances.
• Plan, coordinate, and validate network installations, upgrades, and acceptance tests.
• Implement approved change windows, firmware updates, and network improvements.
• Coordinate with providers and vendors to resolve connectivity issues.
• Apply network security hardening and configuration standards.
• Support encrypted network connectivity and required communications security procedures.
• Provide operational coverage, escalation docs, and shift-lead backup.
• Contribute to infrastructure modernization and on-call support.

Skills

Network engineering

Troubleshooting

Routing protocols

Switching/VLANs

Security compliance

Change management

On-call support

Education

Bachelor’s degree in a relevant field

Five years network experience substitute

DoD 8140 baseline certs

CCNA

Tools

Cisco ISE

Catalyst Center

DoD network tools

Encryptors management

Job description

SandTech is seeking a Senior Network Engineer to support enterprise networks at Joint Base Anacostia-Bolling in Washington, DC. The role requires an active DoD Secret clearance and hands-on experience with high-speed, secure network environments.

You will monitor, troubleshoot, and optimize network infrastructure, coordinating with providers and vendors, and leading change within security and DoD requirements. This is a full-time, onsite position with potential mission-driven telework.