X3 Network Engineer - CISCO - Multi Site - Rolling Contract

My client, a global network and data implementation conslutancy, are seeking x3 Network Engineers to integrate Cisco IR1101 routers, OnLogic IPC’s and Schneider MCSESM123F2LG0 managed switches into existing OT environments, ensuring secure and reliable connectivity between legacy networks and new SCADA systems.

The sites are located in Norfolk, Cambridgeshire, Lincolnshire, and Northamptonshire.

Key Responsibilities and Skills

• Deploy and configure Cisco IR1101 routers and Schneider MCSESM123F2LG0 managed switches (8 RJ45 + 4 SFP ports).
• Implement VLAN segmentation (e.g., VLAN 40 for new SCADA).
• Configure static routes and NAT on Cisco IR1101 for inter-site communication.
• Establish Transition VLAN for integration between legacy and new networks.
• Ensure SCADA traffic flows through Cisco IR1101 without bypass.
• Maintain connectivity to legacy devices without re-IP.
• Update firewall rules as required for new IP addresses and NAT configurations.
• Perform end-to-end connectivity tests between SCADA and PLC devices (local and remote).
• Adherence to Water OTASP standards including Asset Monitoring, Telemetry, Automation, and SCADA software design.
• Compliance with NIS Directive for critical infrastructure security.
• Knowledge of IEC 62443 cybersecurity framework for industrial control systems.
• Implementation of secure VLAN segmentation (VLAN 10 – OT/ICS, VLAN 20 – Management, VLAN 40 – SCADA).
• Experience with Azure AD integration for SCADA IPC authentication.
• Familiarity with security tools such as SIEM logging, Qualys vulnerability scanning, and Microsoft Defender.
• Ability to configure MPLS and IPSEC VPN tunnels for remote connectivity and backup links (4G failover).

Please submit your most recent CV in application to this role.