Network Administrator 3

Description: Senior Network Engineer
Location: San Jose, California (Onsite)
Department: IT Infrastructure & Network Engineering
Position Summary
*** is seeking an experienced Senior Network Engineer to support and enhance network infrastructure across enterprise, campus, data center, WAN, and cloud environments. This role is responsible for the design, deployment, operation, and troubleshooting of large-scale network environments that support critical business and engineering operations.
The ideal candidate is a hands-on engineer who thrives in a fast-paced environment, possesses strong troubleshooting skills, and is comfortable working onsite to support infrastructure deployments, operational escalations, project execution, and network incidents.
Key Responsibilities
• Design, deploy, and support enterprise, campus, data center, and WAN network infrastructure.
• Configure and troubleshoot routing protocols including BGP, OSPF, EIGRP, and static routing.
• Support network technologies including routing, switching, wireless, network security, DNS, DHCP, and load balancing.
• Perform onsite troubleshooting of network, server, and application connectivity issues.
• Lead network upgrades, hardware refreshes, migrations, and infrastructure expansion projects.
• Develop and maintain network documentation, diagrams, standards, and operational procedures.
• Analyze packet captures, routing tables, logs, and monitoring data to identify and resolve complex network issues.
• Support data center networking technologies and high-availability network designs.
• Assist with cloud networking integration across Azure, AWS, and other cloud platforms.
• Participate in incident response, root cause analysis (RCA), and operational reviews.
• Collaborate with server, storage, cloud, security, and application teams to deliver infrastructure solutions.
• Utilize network monitoring and analytics platforms to proactively identify and resolve issues.
• Participate in on-call support and maintenance activities as required.
• Contribute to automation initiatives through scripting and operational efficiency improvements.
Required Qualifications
• 7+ years of enterprise network engineering experience.
• Strong hands-on experience with enterprise routing and switching technologies.
• Experience supporting medium to large-scale enterprise and data center environments.
• Strong understanding of Layer 2 and Layer 3 networking concepts.
• Experience with routing protocols including BGP, OSPF, and EIGRP.
• Experience supporting Cisco, Arista, Aruba, or similar enterprise networking platforms.
• Strong troubleshooting and analytical skills with the ability to diagnose and resolve complex production issues.
• Excellent communication, documentation, and problem-solving skills.
• Ability to work effectively in an onsite operational environment.
Preferred Qualifications
• Experience with data center networking architectures and modern network design principles.
• Experience supporting cloud networking environments including Azure, AWS, or GCP.
• Familiarity with SD-WAN technologies and internet connectivity solutions.
• Experience with network automation using Python, Ansible, Terraform, or similar tools.
• Experience with monitoring and management platforms such as ThousandEyes, Splunk, SolarWinds, or similar technologies.
• Knowledge of DNS, DHCP, IPAM, and network security technologies.
• Industry certifications such as CCNP, CCIE, JNCIP, or equivalent.