Senior Network Engineer: Cisco/Security for 24/7 Ops

AOI; Sugar Land (TX); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Relocation assistance

Health plan options

401K match

Generous PTO

Job summary

Applied Optoelectronics, Inc (AOI) is seeking a Senior Network Engineer to own AOI's network and security stack across multiple environments in Sugar Land, TX. The role is hands-on, focusing on design, deployment, configuration, and ongoing administration of network and security systems.

The candidate will work with Cisco routers, switches, and firewalls, site-to-site and remote-access VPNs, and monitoring platforms in a multi-site manufacturing setting.

Qualifications

• Bachelor's degree in computer science or related field.
• 7+ years in network design, implementation, troubleshooting, and performance tuning.
• LAN and VOIP knowledge relevant to multi-site manufacturing.
• Experience with Cisco routers, switches, and firewalls—both hardware and software configurations.
• Strong written and spoken communication for cross-team collaboration.

Responsibilities

• Designs, configures, maintains, and coordinates LAN/WAN over Site-to-Site VPN.
• Maximizes network performance by monitoring, troubleshooting, and upgrading as needed.
• Secures network systems by enforcing policies and access controls.
• Updates and maintains all network documentation and optimizes it over time.
• Reports network status and manages related projects and tasks.
• Keeps knowledge current through training, publications, and professional networks.

Skills

LAN Knowledge

VOIP Knowledge

Cisco Routers

Cisco Switches

Cisco Firewalls

Network Design

Network Troubleshooting

Budget Tracking

Project Management

Education

Bachelor's degree in computer science

Tools

Cisco IOS

Monitoring Tools

MS Office Documentation

Job description

Applied Optoelectronics, Inc (AOI) is seeking a Senior Network Engineer to own AOI's network and security stack across multiple environments in Sugar Land, TX. The role is hands-on, focusing on design, deployment, configuration, and ongoing administration of network and security systems.

The candidate will work with Cisco routers, switches, and firewalls, site-to-site and remote-access VPNs, and monitoring platforms in a multi-site manufacturing setting.