Network Engineer III (F5)
United States - Seattle•SeattleWashingtonUnited StatesNorth America•February 11, 2026
The Network Engineer-III is responsible for the planning, design, configuration, integration & installation of our growing local area network (LAN) and/or global 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. Work Location: - Onsite in Seattle, WA- Additional travel to satellite locations in Tacoma, WA, and Olympia, WA
Responsibilities
- This role will have a strong focus on F5 technologies, including BIG-IP LTM, traffic management, and application delivery optimization across the enterprise network.
- DESIGN:
- Perform design requirements feasibility studies
- Perform vendor recommendation/selection and coordination for hardware testing and installations
- Examine theoretical and implemented designs for deficiencies and facilitate corrections
- BUILD:
- Prepare maintenance plan documentation & change management
- Examine maintenance plans for accuracy
- Script maintenance implementations
- Work in either a lead role or an assisting role during maintenance implementations
- IMPROVEMENTS:
- Develop Standard Operating Procedures (SOP’s) & Method of Procedures (MOP’s)
- Develop network standardization practices
- Document informational content for specialized network designs to be used for training needs
- Present and/or Train on new network typologies, hardware, and technologies to internal teams
- Lead Root Cause Analysis sessions to achieve better networking practices
- Determine baseline requirements for our network needs
- Provide code analysis on existing software, IOS testing, and software recommendations
- Create network lab mockups for error testing
- Automate repetitive Engineering tasks
- ADDITIONAL:
- Responsible for Forescout management and maintenance (as secondary).
- Manages the team’s ticket queue and responds on-site to issues.
- Act as 3rd level escalations POC for design or other related problems
- Initial deployment of new products and services
- Monitor capacity and plan for bandwidth additions
- Establish project priority based on business needs
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.
- 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, L2VPN, MPLS VPN, L3VPN, FHRP, VLAN, CDP, port-channels, IS-IS, MPLS Inter-AS, VXLAN, DNS, ACL, RADb, Flowspec, RTBH, GitHub, API’s, NFV, Hypervisors, virtual switching
- Multi-vendor experience working with the following platforms: Cisco IOS, ASR 1k (IOS-XE), ASR NCS (IOS-XR), Nexus (NX-OS), Arista (EOS), Junos
- 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 (Arbor, Zenoss, Syslog, SolarWinds, Splunk, Kibana, WhatsUp Gold, etc.)
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