Senior Network Engineer

Job Description:

We are seeking a Senior Network Engineer to support, design, and maintain our enterprise network infrastructure. This role owns day-to-day network operations while also driving architecture and configuration work for new deployments and upgrades. The ideal candidate has deep hands-on expertise with Layer 2/Layer 3 switching, enterprise firewalls, and VPN technologies, and can troubleshoot complex issues across multi-vendor environments with minimal supervision. Security experience is a strong plus.

Responsibilities include:

Network Operations & Support

• 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

Network Design & Architecture

• 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

Configuration & Implementation

• Configure and maintain Layer 2/Layer 3 switches, including VLANs, trunking, spanning tree, port security, link aggregation, and inter-VLAN routing
• Configure and maintain routing protocols (OSPF, BGP, EIGRP, static routing) across the enterprise WAN
• Administer enterprise firewalls: security policies, NAT, application control, and access control rules
• Build and maintain site-to-site IPsec VPN tunnels between offices, data centers, and third-party partners, including troubleshooting Phase 1/Phase 2 negotiation, rekeying, and tunnel stability issues
• Deploy and support remote-access VPN (SSL/IPsec) for end users, including authentication integration and client troubleshooting
• Implement network segmentation and access control between environments

Collaboration & Documentation

• Maintain accurate network documentation, runbooks, and as-built diagrams
• 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

Requirements:

7+ years of hands-on enterprise network engineering experience (or 5+ with a relevant degree)

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)

Education & Experience:

Bachelor's degree in Computer Science, Information Technology, Computer Engineering, Telecommunications, or a related technical field - or equivalent combination of education, certifications, and hands-on experience

Demonstrated experience supporting multi-site environments with 2000+ users and/or multiple data centers or branch locations

Experience operating in a 24/7 production environment with defined SLAs, change control, and on-call responsibilities

Prior experience mentoring junior engineers or serving as a technical escalation point

Active or recent industry certification (CCNA/CCNP or vendor-equivalent) required; advanced certifications (CCIE, PCNSE, NSE 4+) strongly preferred

Advantest America Inc. is part of Advantest Corporation, the world's largest provider of automated test equipment (ATE) for the semiconductor industry. The company designs and manufactures cutting-edge testing solutions that help semiconductor manufacturers ensure the quality and performance of their products. Advantest is known for innovation, reliability, and a strong commitment to supporting its customers and employees. Our Purpose & Values: Mission: Improve lives through advanced technologies and customer-focused innovation. Vision: Be the most trusted and valued test solution provider in the semiconductor value chain. Core Values: I- Innovation is our Lifeblood N- Number One is Our Aspiration T- Trust is our Foundation E- Empowerment is Our Motivation G- Global is our Reach R- Respect is our Heart I - Inclusion and Diversity is Our Commitment T- Teamwork is our Approach Y- Yes is Our Attitude Why Join Us At Advantest, innovation starts with people. We're looking for curious, capable, and collaborative individuals ready to shape the future of semiconductor technology. You'll join a global team where your ideas are valued, your growth is supported, and your work makes a real impact. We foster an integrity-centered culture, where honesty, inclusion, and respect are the foundation of everything we do. Global Bonus Program: Performance-based bonuses paid twice yearly. 401(k) Plan: Pre-tax retirement savings with company match. Medical, Dental & Vision: Multiple plan options including HMO, PPO, and HSA. Income Protection: Life, disability, and accident insurance at no cost. Flexible Spending Accounts: Healthcare and dependent care options. Employee Assistance Program: Free support for personal and work-related issues. Flexible Time Off: Accrual starts at hire, increases with service. Paid Holidays: 13 company holidays annually. Bay Area Target Salary Range $99,400 -$153,500 DOE

State of California Development (EDD):

• https://www.ecfr.gov/current/title-41/subtitle-B/chapter-60/part-60-300#p-60-300.5(a)
• § 60-300.5(a)(2)(3)(4) Equal opportunity clause. Details the job posting requirements.
• § 60-300.5(a)(6) Equal opportunity clause. All employment openings includes all positions except executive and senior management, those positions that will be filled from within the contractor's organization, and positions lasting three days or less. This term includes full-time employment, temporary employment of more than three days' duration, and part-time employment.

CCPA Notice for California Residents:

Notice for California Residents: We collect personal information (PI) from you in connection with your application for employment with Advantest America, Inc., including some or all of the following categories of PI: identifiers and personal records (e.g., name, phone number, email address, employment history); commercial information (e.g., if we reimburse you for travel or other expenses during the application process); sensory information (e.g., recorded virtual interviews); professional or employment information (e.g., information provided in your resume and application, such as employment history); non-public education records (e.g., educational institution transcripts and records); and inferences drawn from the above categories of PI. We collect your PI for our purposes, including performing operations related to your potential employment. To view the Advantest Privacy Policy, visit https://www.advantest.com/privacy-policy.html. For additional details or if you have questions, contact us at AAI_privacy.officer@advantest.com.

EEO Statement Advantest is an Equal Opportunity Employer and embraces diversity in our employee population. It is the policy of Advantest to provide equal opportunity to all qualified applicants and employees without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status or special disabled veteran, marital status, pregnancy, genetic information, or any other legally protected status. The Advantest Way - Diversity, Equity, Inclusion and Belonging At Advantest, diversity, equity and inclusion are at the core of who we are. We are continuing to build a culture where everyone feels a sense of belonging through our DE&I programs & initiatives. We strive to have a diverse, equitable and inclusive workplace to enable us to attract and retain candidates that feel a sense of purpose and empowerment. Our commitment to DE&I is unwavering and we are steadfast in our mission to continuously foster an environment of respect, trust and transparency. We value diversity and inclusion and believe employees of all backgrounds contribute to our ongoing success. At Advantest, we celebrate and support the needs of our employees regardless of race, color, ethnicity, national origin, religion, age, disability, gender (including gender expression and gender identity), sex and sexual orientation. DE&I at Advantest is more than words to us, they are the Advantest Way.