Lab Network Engineer III

F5 Networks•San Jose, CA

About The Position

At F5, we strive to bring a better digital world to life. Our teams empower organizations across the globe to create, secure, and run applications that enhance how we experience our evolving digital world. We are passionate about cybersecurity, from protecting consumers from fraud to enabling companies to focus on innovation. Everything we do centers around people. That means we obsess over how to make the lives of our customers, and their customers, better. And it means we prioritize a diverse F5 community where each individual can thrive. Job Summary We are seeking an experienced Lab Network Engineer III to design, build, maintain, and troubleshoot complex lab network environments that support development, testing, and validation of networking and systems software. This role requires strong hands-on expertise with networking technologies, lab infrastructure, automation, and cross‑functional collaboration.

Requirements

Bachelor’s degree in Computer Science, Engineering, or equivalent practical experience
7+ years of experience in network engineering or lab infrastructure roles
Strong knowledge of TCP/IP, DNS, DHCP, routing and switching concepts
Hands-on experience with enterprise networking hardware (e.g., Cisco, Arista, Juniper, or similar)
Proficiency in Linux system administration
Experience with automation/scripting (Python, Bash, Ansible, etc.)
Strong troubleshooting and problem-solving skills
Excellent communication and collaboration abilities

Nice To Haves

Experience supporting lab environments for networking or systems software development
Familiarity with container networking, virtualization (VMware, KVM), and cloud networking concepts
Experience with CI/CD pipelines and test automation frameworks
Exposure to network security concepts and tools
Experience working across global teams and time zones

Responsibilities

Design, deploy, and maintain scalable lab network topologies to support engineering, QA, and SRE teams
Configure and manage network devices including switches, routers, firewalls, and load balancers
Support Layer 2/Layer 3 networking, routing protocols (BGP, OSPF), VLANs, VXLAN, and network virtualization
Troubleshoot complex network, hardware, and connectivity issues in lab environments
Automate lab provisioning, configuration, and validation using scripting and automation tools
Manage lab hardware lifecycle, including rack/stack, cabling, power, and inventory
Collaborate closely with software, systems, and test teams to enable efficient development and testing workflows
Document lab designs, procedures, and operational best practices
Participate in on-call or escalation support as needed for lab infrastructure