Field Network Engineer (ITS Infrastructure)

Dhaka Technology Limited; Washington; Hybrid; USD 90,000 - 120,000; Part time

Job summary

Dhaka Technologies Limited Company is hiring a Field Network Engineer to support the DDOT ITS network. The role blends field work and data center tasks to design, deploy, and operate a secure, highly available transport framework across smoke-tested DMVPN and overlay VPNs.

The successful candidate will manage IPsec/GRE tunnels, implement dynamic routing, and ensure QoS and security for critical traffic like signal control and CCTV.

Qualifications

• Bachelor's degree or equivalent professional experience in a relevant field.
• 6+ years with ITS, traffic signal/ CCTV transport, and traffic management.
• Experience with LTE/5G failover solutions.
• Network automation skills using Ansible or Python-based scripting.
• IoT security and segmentation best practices.
• High-availability design, disaster recovery planning, and fault-tolerant networks.
• Fiber optic networking experience with SFP/SFP+ transceivers.
• Past work with a state or municipal Department of Transportation.
• Active CCNA Certification required.

Responsibilities

• Deploy and support DMVPN hub-and-spoke networks and overlay fabrics.
• Configure IPsec VPNs, GRE, and tunnel interfaces; optimize dynamic routing.
• Design failover strategies with LTE/5G backups for uptime.
• Coordinate Metro Ethernet provisioning and dual-WAN redundancy.
• Implement VLANs, VRFs, firewall policies; maintain network docs.
• Support ITS infrastructure: traffic signals, CCTV, and IoT devices.
• Ensure encrypted communications; manage VPN certificates and trust domains.

Skills

DMVPN & Secure Overlay Networking

IPsec VPN

Dynamic Routing (BGP/OSPF/EIGRP)

LTE/5G Failover

Network Automation (Ansible/Python)

IoT Security & Segmentation

High-Availability Network Design

Fiber Optic Networking

CCNA Certification

Field & Data Center Operations

Education

Bachelor's degree in Computer Science, Information Technology, Network Engineering, or related field

Tools

Cisco DMVPN

Metro Ethernet

Ansible

Python scripting

Job description

Dhaka Technologies Limited Company | Contract

Washington, United States | Posted on 10/16/2026

Job Title: Field Network Engineer (ITS Infrastructure)
Work Arrangement: Hybrid
Location: Washington, DC 20003

Employment Type: Contract
Engagement Type: W2/1099
Final Interview: Inperson/Online

Position Summary

Dhaka Technologies Limited Company (DTLC) is hiring a Field Network Engineer on behalf of the District Department of Transportation (DDOT).

The District Department of Transportation (DDOT) is seeking a hands-on Field Network Engineer to serve as a senior technical resource within the Intelligent Transportation Systems (ITS) program. This role is responsible for the design, deployment, and day-to-day operations of a secure, highly available ITS network connecting traffic signals, video surveillance systems, and IoT devices across the District of Columbia.

The network environment leverages Metro Ethernet services as the transport underlay and a Cisco DMVPN secure overlay to link distributed field sites back to DDOT's headend facilities and data centers. The engineer will work in both field and datacenter environments, with a focus on uptime, safety, and reliability in mission-critical operations.

Key Responsibilities

DMVPN & Secure Overlay Networking

• Deploy and support Cisco DMVPN (Phase 2/Phase 3) hub-and-spoke and spoke-to-spoke overlay networks across Metro Ethernet transport.
• Configure and troubleshoot IPsec VPN profiles, GRE tunnels, NHRP mappings, and tunnel interfaces for the DMVPN fabric.
• Implement dynamic routing protocols (BGP, OSPF, EIGRP) over DMVPN tunnels to support automated failover and optimal path selection.
• Design failover and redundancy strategies, including LTE/5G backup paths, to ensure uninterrupted connectivity during circuit or equipment outages.
• Monitor tunnel health, latency, and throughput to maintain performance standards across all VPN connections.

Metro Ethernet & WAN Transport

• Coordinate with service providers on Metro Ethernet circuit provisioning (E-Line, E-LAN), turn-up, and incident resolution.
• Manage dual-WAN redundancy models and carrier handoff configurations at each site.
• Perform field installations and cutovers of routers, switches, cabinets, and handoff equipment.

Network Engineering & Operations

• Manage VLAN configurations, IP addressing schemes, and Layer 2/Layer 3 connectivity between remote aggregation points and headend data centers.
• Implement and maintain network segmentation using VRFs, VLANs, and firewall policies to isolate ITS traffic domains.
• Apply and tune QoS policies to prioritize latency-sensitive traffic such as signal control and video.
• Troubleshoot network issues end-to-end from field site through WAN transport to data center.
• Maintain accurate network documentation including diagrams, IP assignments, equipment inventories, and configuration records.

ITS Infrastructure Support

• Support DDOT's traffic signal control systems, CCTV/video surveillance platforms, and IoT field devices by ensuring reliable, low-latency transport connectivity.
• Coordinate field cabinet upgrades to accommodate new network equipment, including power and environmental requirements.
• Manage the migration of remote aggregation points from legacy infrastructure to modern DMVPN-based transport.
• Monitor network performance, availability, and service-level compliance across all ITS transport links.

Security & Compliance

• Ensure all network connections utilize encrypted communications per DDOT and District government security policies.
• Manage VPN certificate lifecycles, key rotation, and trust domain configurations.
• Implement IoT security and segmentation best practices for field-deployed devices.
• Support security audits, vulnerability assessments, and remediation efforts on ITS network infrastructure.
• Combination of field work (street-level cabinets, utility corridors), data center operations, and remote support.
• Travel to field locations across the District required; valid driver's license required.
• Ability to lift and rack network equipment up to 50 lbs.
• Participation in scheduled maintenance windows and on-call availability for after-hours emergency response.

Required and Desired Skills

• Bachelor's degree in Computer Science, Information Technology, Network Engineering, or a related field (or equivalent professional experience). (Required, 11 years)
• Conveying technical and functional concepts for a specific technical specialty (Required, 6 years)
• Preparing complex technical documentation (Required, 6 years)
• Experience with Intelligent Transportation Systems (ITS) including traffic signal controllers, CCTV/video surveillance transport, and traffic management (Required, 6 years)
• Experience with LTE/5G failover solutions (Required, 6 years)
• Network automation skills using Ansible or Python-based scripting. (Required, 6 years)
• Knowledge of IoT security and segmentation best practices. (Required, 5 years)
• Knowledge of high-availability network design, redundant architectures, and disaster recovery planning. (Required, 8 years)
• Fiber optic network experience, including single-mode fiber design, SFP/SFP+ transceivers (Required, 6 years)
• Prior experience working with a state or municipal Department of Transportation. (Required, 6 years)
• Active CCNA Certification (Required)
• CCIE Enterprise Infrastructure, Certified Fiber Optic Technician (CFOT) or equivalent, CompTIA Network+ or Security+, ITIL v4 Foundation (Highly desired)