Network Engineer

ThreatX; San Jose (CA); On-site; USD 131,000 - 160,000; Full time

Job summary

Threat X, Inc. is seeking a skilled Network Engineer to design, implement, and maintain our enterprise network across data centers, campuses, and cloud environments.

You will ensure high availability, performance, and security while supporting cross‑functional IT, security, and DevOps teams. Responsibilities include deploying LAN/WAN, configuring routers and firewalls, monitoring performance, and leading incident response.

Qualifications

• Bachelor’s degree in Computer Science, IT, or related field (or equivalent experience).
• 5–7 years of experience in network engineering or administration.
• Strong knowledge of TCP/IP, routing, and switching.
• Hands-on experience with Cisco, Juniper, Arista, or similar vendors.
• Familiarity with firewalls (Fortinet, Check Point, etc.).
• Experience with network monitoring tools (SolarWinds, Nagios, etc.).
• Cisco SD-Access Fabric
• Cisco ACI Fabric

Responsibilities

• Deploy, and manage LAN/WAN, wireless, and data center networks.
• Configure and manage routers, switches, firewalls, and load balancers.
• Monitor network performance, troubleshoot issues, and drive resolution with limited oversight.
• Support Cisco ACI Fabric in datacenters (Spine & Leaf Infrastructure).
• Support Cisco SD-Access Campus, including Wi-Fi 7.
• Lead the development of enterprise network health across A10 enterprise.
• Implement network security measures (VPNs, ACLs, IDS/IPS, segmentation).
• Support cloud networking (AWS, Azure, OCI) and hybrid environments.
• Perform network capacity planning and optimization.
• Maintain documentation for network architecture and configurations.
• Collaborate cross-functionally with IT, security, and DevOps teams on infrastructure projects.
• Participate in on-call rotation and incident response.

Skills

TCP/IP routing & switching

Network troubleshooting

Documentation & communication

Cross-functional collaboration

On-call / incident response

Education

Bachelor’s degree in Computer Science/IT or related field

Tools

Cisco equipment

Juniper equipment

Arista equipment

Network monitoring tools (SolarWinds, Nagios)

Firewalls (Fortinet, Check Point)

Job description

Network Engineer

We are seeking a skilled Network to support the implementation, operation, and maintenance of A10’s enterprise network infrastructure. This role is responsible for ensuring high availability, performance, and security across data centers, campus, and cloud environments, supporting business-critical operations.

Key Responsibilities

• Deploy, and manage LAN/WAN, wireless, and data center networks
• Configure and manage routers, switches, firewalls, and load balancers
• Monitor network performance, troubleshoot issues, and drive resolution with limited oversight
• Support Cisco ACI Fabric in datacenters (Spine & Leaf Infrastructure)
• Support Cisco SD-Access Campus, including Wi-Fi 7
• Lead the development of enterprise network health across A10 enterprise
• Implement network security measures (VPNs, ACLs, IDS/IPS, segmentation)
• Support cloud networking (AWS, Azure, OCI) and hybrid environments
• Perform network capacity planning and optimization
• Maintain documentation for network architecture and configurations
• Collaborate cross-functionally with IT, security, and DevOps teams on infrastructure projects
• Participate in on-call rotation and incident response

Required Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or related field (or equivalent experience)
• 5-7 years of experience in network engineering or administration
• Strong knowledge of TCP/IP, routing, and switching
• Hands-on experience with Cisco, Juniper, Arista, or similar vendors
• Familiarity with firewalls (Fortinet, Check Point, etc.)
• Experience with network monitoring tools (SolarWinds, Nagios, etc.)
• Cisco SD-Access Fabric
• Cisco ACI Fabric

Preferred Qualifications

• Industry certifications (CCNA, CCNP, JNCIA, etc.)
• Experience with automation tools (Python, Ansible, Terraform)
• Knowledge of SD-WAN and network virtualization
• Experience with container networking (VLAN, VXLAN)
• Exposure to SASE-VPN architecture

Key Skills

• Strong troubleshooting and root cause analysis skills
• Proven ability to work independently and effectively with cross-functional teams.
• Ability to understand multiple network topologies and trace site locations to troubleshoot issues.
• Clear communication and documentation skills
• Ability to manage multiple priorities in a fast-paced environment

AI Use Guidelines for Interviews:

Our interviews are designed to reflect your own skills and thinking. The use of AI or recording tools during live interviews is not permitted unless explicitly invited by the interviewer or approved in advance as part of a reasonable accommodation. If these tools are used inappropriately or in a way that misrepresents your work, your application may not move forward in the process.

Targeted compensation guideline:

Up to $145,000. Compensation will vary based on number of factors, including market demand for specific skills, role type, job level, and individual qualifications. Final salary offers are determined by considerations including, but not limited to, subject matter expertise, demonstrated skill level, relevant experience, geographic location, education, certifications, and training.

A10 Networks is an equal opportunity employer and a VEVRAA federal subcontractor. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. A10 also complies with all applicable state and local laws governing nondiscrimination in employment.