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Posted 05 August, 2026

Network Engineer

Infinity Quest
Sheffield, ENG, GB Full Time

Job Description

• Strong expertise with Cisco Catalyst switching (IOS-XE), VLANs, STP, RSTP, port security, and Qos.

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

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

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

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

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

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• Experience writing Terraform configurations for infrastructure provisioning

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

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

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• Strong troubleshooting skills across Layers 2-7.

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

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• Knowledge of Ansible or Terraform for network configuration management.

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• Familiarity with Cisco NSO or RESTCONF/NETCONF interfaces.

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

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

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• Familiarity with network monitoring tools