Cisco Network Security Engineer — OT/IT (Onsite)

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 safeguard Cisco-based LAN/WAN infrastructure across enterprise and manufacturing environments. The role combines IT and OT security responsibilities in a fast-paced manufacturing setting, requiring hands-on expertise and strong documentation skills.

The ideal candidate will bring 5+ years in networking and 3-5 years in cybersecurity, with deep Cisco proficiency and experience securing firewalls, VPNs, and

Qualifications

• Bachelor’s degree or equivalent practical experience.
• 5+ years of professional networking experience.
• 3-5 years of cybersecurity experience.
• Hands-on expertise with Cisco networking technologies.
• Experience with firewalls, VPNs, IDS/IPS, network segmentation, authentication technologies, and access controls.
• Manufacturing environment experience preferred with understanding of OT network requirements.

Responsibilities

• Design, implement, and maintain Cisco-based LAN/WAN infrastructure across enterprise and manufacturing environments.
• Configure, manage, and troubleshoot Cisco routers, switches, wireless infrastructure, and network appliances.
• Monitor network performance to ensure high availability and reliability.
• Support IT and 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, and other network security technologies.
• Monitor security alerts and investigate suspicious activity across enterprise and OT environments.
• Assist with vulnerability management, remediation efforts, and patch management processes.
• Participate in security incident response activities and support compliance initiatives.
• Manage and support MFA, secure remote access solutions, and access control technologies.
• Collaborate with IT and operational teams to implement and maintain security best practices.
• Support cybersecurity compliance efforts and contribute to security audits and assessments.

Skills

Cisco networking

Network security

Firewalls

VPN

IDS/IPS

OT networking

Education

Bachelor's degree in CS/IT/Cybersecurity

Tools

Cisco IOS

Job description

HiTHIUM Energy Storage is seeking a Network Security Engineer to design, implement, and safeguard Cisco-based LAN/WAN infrastructure across enterprise and manufacturing environments. The role combines IT and OT security responsibilities in a fast-paced manufacturing setting, requiring hands-on expertise and strong documentation skills.

The ideal candidate will bring 5+ years in networking and 3-5 years in cybersecurity, with deep Cisco proficiency and experience securing firewalls, VPNs, and