Senior Network Engineer - Design, Optimize & Secure Global WAN

Advantest; San Jose (CA); On-site; USD 99,000 - 154,000; Full time

Benefits offered by this job

Global Bonus Program

401(k) Plan

Medical, Dental & Vision

Income Protection

Flexible Spending Accounts

Employee Assistance Program

Flexible Time Off

Paid Holidays

Job summary

Advantest America Inc. in San Jose, CA seeks a Senior Network Engineer to design, operate, and optimize our enterprise network, collaborating across teams and vendors.

You will own day‑to‑day network operations, manage Layer 2/3 switching, firewalls, and VPNs, guide complex outages, and mentor junior engineers in a 24/7 production environment.

This role supports strategic initiatives for global connectivity and cloud integration.

Qualifications

• 7+ years of hands-on enterprise network engineering experience
• Expert-level knowledge of Layer 2/Layer 3 switching and routing in production environments
• Strong hands-on experience administering enterprise firewalls (e.g., Palo Alto, Fortinet, Cisco ASA/Firepower, Check Point)
• Proven experience designing, deploying, and troubleshooting site-to-site and remote-access VPNs
• Solid grasp of TCP/IP, subnetting, DNS, DHCP, NAT, QoS, and network security fundamentals
• Demonstrated ability to troubleshoot complex, cross-domain issues under pressure
• Experience working within formal change management and documentation practices
• Strong written and verbal communication skills
• Additional Skills Preferred (but not required):
• Security experience: firewall log analysis, incident response support, IDS/IPS, network segmentation, or vulnerability remediation
• Industry certifications: CCNP, CCIE, PCNSE, NSE 4+, JNCIP, CompTIA Security+, or equivalent
• Experience with NAC, 802.1X, RADIUS/TACACS+, or Zero Trust access models
• Cloud networking experience (AWS, Azure, or GCP — VPCs, transit gateways, VPN/Direct Connect)
• Wireless infrastructure experience (Cisco, Aruba, Meraki)
• SD-WAN deployment and management
• Hands-on experience with network automation frameworks and infrastructure-as-code practices (Python, Ansible, Terraform, Git)
• Experience with AIOps or AI-assisted network monitoring, observability, and analytics platforms
• Familiarity with compliance frameworks (NIST, PCI-DSS, HIPAA, SOC 2)

Responsibilities

• Serve as an escalation point for complex network incidents, performing root cause analysis and driving issues to resolution within SLA
• Monitor network health, capacity, and performance; proactively identify and remediate bottlenecks before they impact users
• Troubleshoot connectivity issues across VLANs, routing, switching, DNS, DHCP, TCP/IP, and WAN/ISP links
• Use packet capture and network monitoring tools to diagnose latency, packet loss, and application performance problems
• Manage firmware upgrades, patching, and configuration backups following established change management procedures
• Participate in an on‑call rotation and support scheduled maintenance windows
• Design scalable, resilient LAN, WAN, and remote‑access solutions that support business growth
• Develop network diagrams, IP addressing schemes, VLAN plans, and routing designs
• Evaluate and recommend hardware, software, and circuits; participate in vendor selection and technical evaluations
• Lead network components of infrastructure projects — site build‑outs, migrations, refreshes, and cloud connectivity
• Define and maintain network standards, baseline configurations, and technical documentation
• Provide technical mentorship to junior engineers and help‑desk staff
• Work with systems, application, and security teams on cross‑functional initiatives
• Communicate clearly with non‑technical stakeholders during outages and project planning

Skills

Layer 2/3 switching

Routing

Enterprise firewalls

VPN technologies

TCP/IP & DNS/DHCP

WAN/LAN design

Network troubleshooting

Change management

Mentoring

Education

Bachelor's degree in CS/IT/Engineering

Equivalent experience/certs

Tools

Palo Alto

Fortinet

Cisco ASA/Firepower

Check Point

Job description

Advantest America Inc. in San Jose, CA seeks a Senior Network Engineer to design, operate, and optimize our enterprise network, collaborating across teams and vendors.

You will own day‑to‑day network operations, manage Layer 2/3 switching, firewalls, and VPNs, guide complex outages, and mentor junior engineers in a 24/7 production environment.

This role supports strategic initiatives for global connectivity and cloud integration.