Senior Enterprise Network Engineer & Design Architect

vTech Solution; Washington; On-site; USD 120,000 - 180,000; Full time

Job summary

vTech Solution is seeking a Network Engineering Specialist to design, implement, modernize, and support a large-scale, geographically distributed enterprise network. The role covers routing, switching, WAN, SD-WAN, data centers, cloud connectivity, and security across corporate, transportation, and operations environments.

Responsibilities include building standards, capacity planning, and implementing high-speed links (10G–400G), Cisco Nexus/ACI, and cloud connectivity (Azure/AWS).

Qualifications

• Bachelor's degree in Computer Science, Information Technology, Engineering, Telecommunications, or related field, or equivalent experience.
• 10+ years of progressive enterprise network engineering experience in large, complex environments.
• Expert-level knowledge of enterprise routing and switching technologies.
• Advanced experience with Cisco routers, Catalyst switches, Nexus platforms, and enterprise network technologies.
• Advanced knowledge of BGP, OSPF, EIGRP, TCP/IP, VLANs, VRFs, STP, QoS, multicast, VPNs, and route redistribution.
• Strong experience with enterprise WAN and SD-WAN architecture and implementation.
• Experience with carrier telecommunications services and WAN circuit technologies.
• Experience designing highly available and geographically diverse network infrastructures.

Responsibilities

• Design, engineer, configure, troubleshoot, and optimize enterprise LAN and WAN infrastructure.
• Support complex Layer 2 and Layer 3 network environments using BGP, OSPF, EIGRP, VLANs, VRFs, HSRP, STP, QoS, multicast, and route redistribution.
• Develop network standards, reference architectures, engineering specifications, and configuration standards.
• Perform capacity planning, performance analysis, lifecycle management, and infrastructure modernization.
• Engineer WAN connectivity using Internet, broadband, Ethernet, MPLS, EPL/EVPL, wavelength services, and dark fiber.
• Troubleshoot complex WAN performance issues including latency, packet loss, jitter, routing, and carrier transport.
• Support Cisco data center technologies such as Nexus switching and Cisco ACI.
• Assist with data center consolidation, relocation, migration, and modernization efforts.
• Engineer high-speed connectivity including 10G, 40G, 100G, and 400G links.
• Support optical networking technologies including DWDM, dark fiber, and data center interconnect solutions.
• Design and support network segmentation with VLANs, VRFs, ACLs, firewalls, VPNs, and IPSec.
• Participate in implementing modern network security architectures like Zero Trust and SASE.
• Support cloud connectivity technologies such as Azure ExpressRoute, AWS Direct Connect, and VPNs.
• Troubleshoot routing, connectivity, performance, and security issues across on-premises and cloud environments.
• Support connectivity for operational systems including CCTV, voice, building systems, and monitoring platforms.
• Utilize network management and monitoring tools like SolarWinds, ServiceNow, ThousandEyes, and packet analyzers.
• Maintain accurate network inventory and CMDB data.
• Develop automation using Python, Ansible, APIs, and Terraform where appropriate.
• Create High-Level Designs, Low-Level Designs, Methods of Procedure, implementation plans, test plans, rollback procedures, network diagrams, and operational documentation.
• Conduct technical design reviews and assess dependencies, risks, capacity limitations, and implementation concerns.

Skills

Enterprise routing & switching

BGP/OSPF/EIGRP

WAN/SD-WAN

Cisco Nexus/Catalyst

Network security basics

Cloud connectivity

Python automation

Education

Bachelor's degree in CS/IT/Engineering

Tools

SolarWinds

ServiceNow CMDB

ThousandEyes

Packet analyzers

Terraform

Ansible

Job description

vTech Solution is seeking a Network Engineering Specialist to design, implement, modernize, and support a large-scale, geographically distributed enterprise network. The role covers routing, switching, WAN, SD-WAN, data centers, cloud connectivity, and security across corporate, transportation, and operations environments.

Responsibilities include building standards, capacity planning, and implementing high-speed links (10G–400G), Cisco Nexus/ACI, and cloud connectivity (Azure/AWS).