Seeking a Mid-Senior Level Operational Technology (OT) Network Engineer for a 12-month onsite role in Tulsa, OK (local candidates preferred). The position involves monitoring, troubleshooting, and maintaining network health across operational sites, configuring and deploying routers, switches, and firewalls, ensuring security compliance, and supporting network migrations and hardware installations. The role requires expertise in routing, switching, firewalls, DMVPN, BGP, network monitoring, and automation with scripting languages like Python and Ansible. Responsibilities include incident response, documentation, collaboration with teams, and continuous improvement through automation. Candidates must have strong network engineering fundamentals, hands-on experience with DMVPN and BGP, and knowledge of security practices. Work authorization for USC or Green Card is required. The interview process includes virtual and onsite components.