Cisco Network Security Engineer for IT/OT & Manufacturing

HiTHIUM Energy Storage; Forney (TX); On-site; USD 110,000 - 140,000; Full time

Job summary

HiTHIUM Energy Storage is seeking a Network Security Engineer to design, implement, and secure Cisco-based LAN/WAN across enterprise and manufacturing environments. The role combines IT and OT cybersecurity to ensure confidentiality, integrity, and availability.

The ideal candidate has 5+ years of networking and 3–5 years in cybersecurity, with hands-on Cisco experience, firewall/VPN/IDS/IPS skills, and manufacturing OT understanding. Onsite work only; Mandarin reading preferred.

Qualifications

• Bachelor's degree in Computer Science/IT/Cybersecurity or equivalent experience.
• 5+ years of professional networking experience.
• 3–5 years of cybersecurity experience.
• Hands-on Cisco networking expertise.
• Experience with firewalls, VPNs, IDS/IPS, segmentation, authentication technologies, and access controls.
• Strong understanding of network security principles.
• Manufacturing OT/IT environment experience preferred.
• Onsite work only; no remote option.
• Mandarin reading/writing preferred.

Responsibilities

• Design, implement, and maintain Cisco LAN/WAN infrastructure across enterprise and manufacturing environments.
• Configure, manage, and troubleshoot Cisco routers, switches, wireless infrastructure, and network appliances.
• Monitor network performance for high availability and reliability.
• Support IT/OT network segmentation initiatives to maintain operational security and uptime.
• Perform network upgrades, capacity planning, and infrastructure optimization.
• Maintain accurate network documentation, diagrams, and SOPs.
• Assist with day-to-day break/fix network incidents and escalated support requests.
• Administer and support firewalls, VPNs, MFA, and access control technologies.
• Monitor security alerts and investigate suspicious activity across IT/OT environments.
• Assist with vulnerability management, remediation, and patch management processes.
• Participate in security incident response activities and support compliance initiatives.
• Collaborate with IT and operational teams to implement and maintain security best practices.
• Support cybersecurity compliance efforts and audits.

Skills

Cisco networking

Firewalls

VPNs

IDS/IPS

Network segmentation

Authentication

Access controls

OT networks

Troubleshooting

Documentation

Communication

Education

Bachelor's degree

Job description

HiTHIUM Energy Storage is seeking a Network Security Engineer to design, implement, and secure Cisco-based LAN/WAN across enterprise and manufacturing environments. The role combines IT and OT cybersecurity to ensure confidentiality, integrity, and availability.

The ideal candidate has 5+ years of networking and 3–5 years in cybersecurity, with hands-on Cisco experience, firewall/VPN/IDS/IPS skills, and manufacturing OT understanding. Onsite work only; Mandarin reading preferred.