Network Field Engineer

InstantServe LLC; Washington (District of Columbia); On-site; USD 120,000 - 180,000; Full time

Job summary

InstantServe LLC is seeking an experienced Field Network Engineer to design, deploy, and maintain secure, highly available network infrastructure supporting ITS, including traffic signals, CCTV, and IoT devices in the District of Columbia.

You will deploy and troubleshoot Cisco DMVPN Phase 2/3, IPsec VPNs, GRE tunnels, and dynamic routing, while coordinating field installations and ensuring compliance with DDOT security policies.

Qualifications

• Bachelor's degree or equivalent professional experience.
• 11 years of overall professional experience.
• 6 years in ITS, LTE/5G failover, network automation, fiber-optic networking, documentation.
• 8 years with high-availability network design and disaster recovery.
• 5 years with IoT security and network segmentation.
• 6 years with a state or municipal Department of Transportation.
• Active CCNA certification.

Responsibilities

• Design, deploy, and maintain secure, highly available network infrastructure.
• Deploy and troubleshoot DMVPN Phase 2/3, IPsec VPNs, GRE tunnels, and dynamic routing.
• Manage Metro Ethernet, WAN, fiber and LTE/5G failover solutions.
• Configure VLANs, VRFs, QoS, and network segmentation; ensure redundancy.
• Perform field installations, upgrades, migrations, and circuit turn-ups.
• Support ITS assets like traffic signals, CCTV, and IoT devices.
• Automate network operations using Ansible or Python.
• Maintain documentation and comply with DDOT and District security policies.

Skills

Network design

Troubleshooting

Network automation

Documentation

Compliance

Field engineering

Education

Bachelor's degree

Tools

Cisco DMVPN

IPsec VPN

GRE tunnels

BGP

OSPF

EIGRP

VLANs/VRFs

QoS

Ansible

Python

Job description

We are seeking an experienced Field Network Engineer to design, deploy, and maintain secure, highly available network infrastructure supporting Intelligent Transportation Systems (ITS), including traffic signals, CCTV/video surveillance, and IoT devices.

Key Responsibilities

• Deploy and troubleshoot Cisco DMVPN Phase 2/3, IPsec VPNs, GRE tunnels, and dynamic routing protocols (BGP, OSPF, EIGRP).
• Manage Metro Ethernet, WAN connectivity, fiber-optic infrastructure, and LTE/5G failover solutions.
• Configure VLANs, VRFs, QoS, network segmentation, and redundant network architectures.
• Perform field installations, equipment upgrades, circuit turn-ups, and network migrations.
• Support traffic signal systems, CCTV, traffic management platforms, and IoT devices.
• Automate network operations using Ansible or Python.
• Maintain network documentation and ensure compliance with DDOT and District security policies.

Required Qualifications

• Bachelor's degree in a relevant field or equivalent professional experience.
• 11 years of overall professional experience.
• 6 years of experience in ITS, LTE/5G failover, network automation, fiber-optic networking, technical communication, and documentation.
• 8 years of experience in high-availability network design and disaster recovery.
• 5 years of experience with IoT security and network segmentation.
• 6 years of experience working with a state or municipal Department of Transportation.
• Active CCNA certification.

Preferred Certifications

CCIE Enterprise Infrastructure, CFOT or equivalent, CompTIA Network+ or Security+, and ITIL 4 Foundation.

Work Requirements

• Travel to field locations throughout the District.
• Valid driver's license required.
• Ability to lift up to 50 lbs.
• Availability for scheduled maintenance and after-hours emergency support.