Senior Network Engineer (must have Secret clearance)

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

Senior Network Engineer (must have Secret clearance)

Washington D.C., DC 20032

Job ID: IL8178-12

Job Description

Position Overview

At SandTech Solutions, we are committed to “Enabling Success” of our clients’ missions. We are seeking a Senior Network Engineer to support enterprise network availability, modernization, troubleshooting, and secure operations at Joint Base Anacostia-Bolling in Washington, D.C. The position supports unclassified and classified network environments, works closely with operations teams, and helps maintain reliable infrastructure for mission-critical services.

1. Security Clearance

Active DoD Secret security clearance required.

2. Education & Certifications

Bachelor’s degree in a relevant field, including computer science, information systems, engineering, software engineering, management, sciences, mathematics, or business.

Three additional years of applicable experience may substitute for a bachelor’s degree.

Five years of relevant network engineering experience required.

DoD 8140 baseline certification requirements are referenced in the source; exact applicable qualification and timing require confirmation. CCNA is listed, while CompTIA Security+ CE is identified as optional.

3. Key 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 telecommunications providers and vendors to resolve connectivity and equipment issues.
• Apply approved network security hardening, patching, and configuration standards.
• Support encrypted network connectivity and required communications security procedures.
• Provide operational coverage, escalation documentation, and shift-lead backup when needed.
• Contribute to infrastructure modernization, technology refresh, and on-call operational support.

4. Required Qualifications

• At least five years of experience diagnosing and resolving complex network hardware, circuit, and transmission problems.
• Experience designing, deploying, testing, and maintaining complex high-speed enterprise networks.
• Strong knowledge of switching, VLANs, trunks, spanning tree, and Layer 2 and Layer 3 troubleshooting.
• Experience with routing technologies, including OSPF and other enterprise dynamic routing protocols.
• Ability to plan network enhancements, validate configurations, and resolve service disruptions.
• Experience working within structured change management and security requirements.

5. Preferred Qualifications

• Cisco Identity Services Engine (ISE) and 802.1X network access control experience.
• Cisco Catalyst Center (formerly DNA Center) experience.
• Experience supporting DoD, Air Force, NIPR, SIPR, or other regulated enterprise environments.
• Experience with high-assurance encryptors and network element management tools.
• Familiarity with National Capital Region defense installations and communications operations.

6. Work Environment & Physical Requirements

• Location: Joint Base Anacostia-Bolling, Washington, D.C.
• Work arrangement: Full-time onsite; occasional telework may be permitted as mission requirements allow.
• Core schedule: Monday through Friday, 10:00 a.m. to 6:00 p.m.; on-call and operational standby rotation required.
• Work is primarily computer-based and may involve inspecting or configuring network equipment in operational facilities.