Sr. Tech Lead - Infrastructure Services S 4D
Core
Design and manage WAN architecture and security infrastructure for a multi-site estate, including migrating legacy firewalls to next-gen platforms and ensuring IT/OT network segmentation.
Role type
Senior Infrastructure Services Tech Lead (Network & Security)
Builds
Secure, resilient WAN connectivity and security controls for industrial and enterprise environments
Domain
Industrial/Manufacturing IT & OT Network Security
Deliverable
infrastructure
Required skills
WAN architecture design, Palo Alto NGFW administration, BGP/OSPF routing, IT/OT segmentation (Purdue model), firewall migration planning, carrier management, load balancer configuration, IPS/DPI/DLP management
Preferred skills
SD-WAN design, network automation (Ansible/Python/XML API), manufacturing plant-floor networking experience
Technologies
Palo Alto Networks, Cisco ASA, Prisma Access, BGP, OSPF, Ansible, Python
Responsibilities
Lead WAN architecture for 50–60 DIA circuits; manage NGFW, load balancers, IPS, DPI, and DLP; execute migration from Cisco ASA to Palo Alto; support on-call rotation for critical incidents; oversee IT/OT network firewalling
Seniority
Senior, hands-on IC