Senior Network Engineer

F3 Design; Redmond (WA); Hybrid; USD 95,000 - 105,000; Full time

Job summary

F3 Design in Redmond, WA, is seeking a Senior Network Engineer to design, implement, and troubleshoot a robust telecommunications network. The ideal candidate will have at least 8 years of experience in a networking role, preferably within telecommunications.

This position primarily supports remote work with some travel required. Responsibilities include maintaining network reliability and providing customer support, all while documenting processes in our ticketing system.

Qualifications

• 8+ years as a Network Engineer or comparable role.
• Experience in telecommunications strongly preferred.
• Ability to troubleshoot TCP/IP networks.

Responsibilities

• Design and maintain a highly available IP/BGP network.
• Monitor network health and performance metrics.
• Deploy and troubleshoot Linux and Windows servers.

Skills

TCP/IP and routing protocols

Network administration

Strong communication skills

Linux and UNIX administration

Network security

Cloud environments

Automation scripting

Tools

VMware

Cisco IOS XR

Amazon Web Services

Job description

Senior Network Engineer

Department: Managed Services

Employment Type: Full Time

Location: Threshold - Redmond, WA

Compensation: $95,000 - $105,000 / year

Description

Threshold Communications is looking for a Senior Network Engineer with telecommunications industry experience or a strong networking background who can work in a fast‑paced environment to provide the best possible solutions for our customers. Candidates who thrive in this role are self‑motivated, passionate about the technology they work with, and continue their personal learning to sustain that passion.

This is a primarily remote position open to candidates in the Seattle, WA Metro, and Greater Puget Sound, WA areas of the United States. This role reports directly to company leadership and works closely with internal operations, sales, provisioning, and customer support teams daily.

While this job is remote on a day‑to‑day basis, some travel will be required to maintain our presence in a Seattle, WA datacenter. Periodically, we also dispatch to customer sites to aid with escalated requests, assist our sales team, or just say hello.

Key Responsibilities

• Design, implement, maintain, and troubleshoot a highly available IP/BGP telecommunications network. Configure and install routers, switches, firewalls, and related network devices.
• Configure, implement, and troubleshoot customer telecommunications services, including DIA, DWDM, Metro Ethernet, and other offerings.
• Monitor key network indicators, including performance, device health, availability, status, and integrity.
• Manage and maintain the company’s Zero Trust and SASE security suite, supporting deployment, configuration, troubleshooting, and planning.
• Maintain and troubleshoot network‑related hypervisors and virtual machines.
• Deploy, maintain, and troubleshoot Linux and Windows servers.
• Develop and maintain automation for network provisioning, configuration, monitoring, validation, and operational tasks. Regularly evaluate the reliability and effectiveness of automated processes.
• Research and evaluate new network technologies and recommend network equipment purchases during infrastructure refresh cycles.
• Serve as a technical leader by providing consulting services to Threshold Communications customers. Assist with troubleshooting network issues and act as the highest point of technical escalation.
• Create custom solutions for customers as part of the sales engineering role, with limited capacity.
• Assist with Threshold Communications’ VoIP platform, including hosted PBX, SIP trunking, and related VoIP services.
• Maintain accurate technical documentation. Record procedures, configurations, troubleshooting, and completed work in the company’s ticketing system and knowledge base.
• Mentor team members on technical issues and troubleshooting techniques.
• Perform on‑site data center work to install, troubleshoot, and maintain systems and network equipment.
• Participate in the Engineering team’s on‑call rotation.

Skills, Knowledge & Expertise

• Eight or more years of industry experience as a Network Engineer, Network Administrator, or in a comparable networking role.
• Telecommunications industry experience is strongly preferred.
• Strong written and verbal English communication skills.
• In-depth understanding of TCP/IP and routing protocols, including BGP and OSPF.
• Strong working knowledge of the OSI model and ability to troubleshoot TCP/IP networks using physical and software diagnostic tools.
• Demonstrated proficiency in planning, deploying, and troubleshooting WANs, LANs, firewalls, DNS, VLANs, static and dynamic IP addressing, and VPNs.
• Experience supporting on‑premises, cloud, and hybrid environments, including Amazon Web Services, Microsoft Azure, and Oracle OCI.
• Deep understanding of Metro Ethernet services and terminology, including EPL, EVPL, UNIs, NNIs, and IEEE 802.1ad.
• Strong understanding of network operating systems, including Arista EOS, Cisco IOS XR, Ciena SAOS, Fortinet FortiOS, and Palo Alto Networks PAN-OS.
• Experience with virtualization and container technologies, including VMware, KVM, Proxmox, Docker, and Microsoft Hyper‑V.
• Proficiency in Linux and UNIX system administration, including deployment, troubleshooting, updates, and security patching.
• Experience with Microsoft and Unix‑based operating systems, including Debian, Ubuntu, Red Hat Enterprise Linux, Rocky Linux, FreeBSD, and Windows Server.
• Experience with administration in Office365 suite of solutions.
• Knowledge in scripting languages and other automation tools such as Python, Bash, Ansible, or others.
• Ability to independently analyze systems and networks, develop designs, and plan implementations.
• Ability to learn and adapt to new technologies quickly.
• Exceptional organizational skills and attention to detail.
• Ability to manage multiple priorities in a fast‑moving environment.
• Experience with monitoring and logging tools, including Splunk, Zabbix, and the Elastic Stack.
• Ability to work independently while collaborating effectively across teams.
• Strong customer‑service mindset and ability to communicate professionally with individuals at all organizational levels.