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# Senior Network Engineer

- **Company:** Applied Optoelectronics, Inc.
- **Location:** Sugar Land, TX, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** VoIP, Cisco Routers, Information Systems, Networking Hardware, Virtual Private Networks (VPN), Network Security, Network Troubleshooting, Microsoft Office, Network Architecture, Network Planning and Design, Network Monitoring, Performance Tuning, Wide Area Networks, System Availability, Firewalls (Computer Science), Information Technology, Hardware Infrastructure, Network Optimization
- **Published:** July 29, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=db59de14e55b877f

## About the Role

Candidates must be authorized to work in the United States. Visa sponsorship is not available for this position.

Required:

 * Bachelor's degree in Computer Science or related program

 * 7+ years' experience in Tracking Budget Expenses, Project Management, Network Design and Implementation, Network Troubleshooting, Network Hardware Configuration, Network Performance Tuning

 * LAN Knowledge & VOIP Knowledge

 * Knowledge of Cisco Routers, Switches, Firewalls - Software and Hardware Configurations

 * Strong verbal and written communication skills for effective collaboration between team members

Preferred:

 * Proficiency in Microsoft Suite for project documentation and reporting

 * Bilingual in Mandarin is preferred

 * CCNA Certification is a plus

## Description

The MIS team is responsible for the design, reliability, and security of the network infrastructure supporting 24/7 manufacturing operations, enterprise systems, and secure cross-site connectivity. We are seeking a Senior Network Engineer who will take technical ownership of AOI's network and security stack and play a critical role in ensuring high availability, performance, and security across all environments.

This is a hands-on, infrastructure-focused role centered on the design, deployment, configuration, and ongoing administration of network and security systems. The successful candidate will work extensively with Cisco routers, switches, and firewalls, site-to-site and remote-access VPNs, and network monitoring and alerting platforms in a multi-site manufacturing environment.

Job Responsibilities

 * Designs, configures, maintains, and coordinates the use of customer's Local Area and Wide Area Networks over Site-to-Site VPN.

 * Maximizes network performance by monitoring performance; troubleshooting network problems and outages; scheduling upgrades; collaborating with network architects on network optimization.

 * Secures network system by establishing and enforcing policies; defining and monitoring access.

 * Updates and maintains all documentation requested by management and will be tasked with improving such documentation as required.

 * Accomplishes information systems and organization mission by completing related results as needed.

 * Reports network operational status by gathering, prioritizing information; managing projects.

 * Updates job knowledge by participating in educational opportunities; reading professional publications; maintaining personal networks; participating in professional organizations.


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