Network Engineer

• Location – Sheffield 3 days/week
  
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•         Strong expertise with Cisco Catalyst switching (IOS-XE), VLANs, STP, RSTP, port security, and Qos.

•         Practical experience with Cisco SD-WAN / Catalyst SD-WAN) - policy templates, VPN segmentation, and WAN edge configuration.

•         Hands-on experience with Cisco SD-Access (SDA) fabric design, commissioning, and operations.

•         Working knowledge of Cisco Catalyst Centre - device management, assurance, and automation workflows.

•         Understanding of OT network architecture, including the Perdue Model and IT/OT DMZ design.

•         Familiarity with OT protocols: Modbus, DNP3, EtherNet/IP, PROFINET, IEC 61850, or OPC-UA.

•         Experience writing Terraform configurations for infrastructure provisioning

•         Exposure to CI/D tooling (GitLab CI, GitHub Actions, Jenkins, or equivalent).

•         Scripting proficiency in Python and/or Bash for network automation tasks.

•         Strong troubleshooting skills across Layers 2-7.

•         Experience with Cisco ISE (Identity Services Engine) for AAA, profiling, and TrustSec.

•         Knowledge of Ansible or Terraform for network configuration management.

•         Familiarity with Cisco NSO or RESTCONF/NETCONF interfaces.

•         Exposure to industrial cybersecurity frameworks: IEC 62443, NIST SP 800-82, or NIS2.

•         Experience with SCADA/ICS systems (e.g., Ignition, Wonder ware, Siemens TIA Portal, Rockwell FactoryTalk).

•         Familiarity with network monitoring tools