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Senior Network Engineer - F5 & Enterprise WAN​/LAN

Job in Seattle, King County, Washington, 98127, USA
Listing for: Net2Source (N2S)
Full Time position
Listed on 2026-05-27
Job specializations:
  • IT/Tech
    Systems Engineer, Network Engineer
Salary/Wage Range or Industry Benchmark: 60000 - 80000 USD Yearly USD 60000.00 80000.00 YEAR
Job Description & How to Apply Below

Job Overview

Private Cloud - Americas Healthcare and Tech – Americas Healthcare and Tech /

Full - Time /

On-site

The Network Engineer‑III is responsible for the planning, design, configuration, integration & installation of our growing local area network (LAN) and/or wide area network (WAN). The Network Engineer‑III will provide leadership in technical support and documentation to various departments and users with regard to the global infrastructure. The Network Engineer‑III serves as a liaison to gather network requirements from internal customers, vendors, and other third‑party providers.

This role has a strong focus on F5 technologies, including BIG‑IP LTM, GTM, Remote access, traffic management, and application delivery optimization across the enterprise network. Other responsibilities include Forescout device profiling in a Software‑Defined Access environment and managing Solar Winds device monitoring for the Data Center and Enterprise environment.

Work Location

Onsite in Seattle, WA; additional travel to satellite locations in Tacoma, WA, and Olympia, WA.

Responsibilities
  • Strong focus on F5 technologies, including BIG‑IP LTM, traffic management, and application delivery optimization across the enterprise network.
  • Perform design requirements and recommendations for the enterprise network.
  • Perform vendor recommendation/selection and coordination for hardware testing, installations, and upgrades.
  • Perform maintenance and upgrades of both hardware and software.
  • Scripting and testing of maintenance plans for all upgrades and changes.
  • Work in either a lead role or an assisting role during maintenance implementations.
  • Develop or conform to client Standard Operating Procedures (SOPs) & Method of Procedures (MOPs).
  • Document informational content for specialized network designs to be used for training needs.
  • Present and/or train on new network topologies, hardware, and technologies to internal teams.
  • Lead Root Cause Analysis sessions to achieve better networking practices.
  • Provide code analysis on existing software, IOS testing, and software recommendations.
  • Automate repetitive Engineering tasks.
  • Knowledge of Forescout management, profiling, and maintenance.
  • Manage and maintain Solar Winds monitoring and backups for network gear.
  • Manage the team's ticket queue and respond on‑site to issues.
  • Work with teams for escalations, POCs, and other related problems.
  • Initial deployment of new products and services.
  • Monitor capacity and plan for bandwidth additions.
Requirements
  • High School Diploma or regional equivalent required.
  • Bachelor's Degree required, preferably in Computer Science or Network Engineering. At the manager's discretion, additional relevant experience may substitute for the degree requirement.
  • Minimum 5‑7 years of recent experience with network design and build‑out of LAN/WANs and/or large‑scale network retrofits and remediations.
  • Hands‑on experience with F5 BIG‑IP solutions, including load balancing and application delivery.
  • Knowledge of Solar Winds Monitoring and Forescout NAC.
  • Must have certifications: CCNA and F5 101.
  • Preferred certifications: F5 201, F5 301, CCDA, CCNP, CCDP preferred, CCIE (R&S, SP, or DC) highly preferred (or equivalent experience), Python PCEP.
  • Advanced level experience working with most of the following technologies/applications: MPLS, BGP, LDP, QoS, IPv6, OSPF, vPC, STP, DWDM, EVPN, L2

    VPN, MPLS VPN, L3

    VPN, FHRP, VLAN, CDP, port‑channels, IS‑IS, MPLS Inter‑AS, VXLAN, DNS, ACL, RADb, Flow spec, RTBH, Git Hub, API's, NFV, Hypervisors, virtual switching.
  • Multi‑vendor experience working with the following platforms:
    Cisco IOS, ASR 1k (IOS‑XE), ASR Company (IOS‑XR), Nexus (NX‑OS), Aruba wireless and Clear Pass.
  • Experience working in a service provider, datacenter/hosting environment, or large‑scale enterprise networks.
  • Experience researching, evaluating, and recommending hardware and/or software solutions supporting large‑scale deployments and/or remediations against the LAN/WAN.
  • Experience working with 3rd party networking vendors, with an understanding of the service/hardware/software portfolios they provide.
  • Able to identify areas of process improvement and provide input and solution options to streamline work.
  • Excellent writing, documentation, and communication skills, possessing the ability to communicate well with technical and non‑technical peers.
  • Customer service‑oriented attitude.
  • Experience with network service monitoring systems (Spectrum, Solarwinds, and Cisco DNAC).
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Position Requirements
10+ Years work experience
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