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Network Engineer

Job in Sheffield, South Yorkshire, S5, England, UK
Listing for: Pearson Whiffin Recruitment Ltd
Full Time position
Listed on 2026-05-30
Job specializations:
  • IT/Tech
    Cybersecurity, Network Engineer, IT Specialist
Job Description & How to Apply Below

Network Engineer – Extreme & Juniper Specialist

We are seeking a highly skilled and security-cleared Network Engineer to support and maintain a complex enterprise network environment. This role is ideal for an experienced professional with strong hands‑on expertise in Extreme and Juniper technologies, who thrives in operational support and troubleshooting scenarios.

Security Clearance

Must have active SC

Key Responsibilities
  • Manage and support the day‑to‑day operation of the network infrastructure
  • Monitor network performance, availability, and capacity using appropriate toolsets
  • Respond to and resolve incidents, service requests, and escalations within agreed SLAs
  • Perform proactive maintenance, patching, and upgrades across network devices
  • Troubleshoot complex network issues across LAN, WAN, and data centre environments
  • Work closely with internal teams and stakeholders to ensure network reliability and performance
  • Maintain accurate documentation of network configurations, processes, and changes
Required Skills & Experience
  • Strong hands‑on experience with Extreme Networks and Juniper technologies
  • Proven background in network support, administration, and troubleshooting
  • Solid understanding of routing and switching protocols (e.g. BGP, OSPF, VLANs, STP)
  • Experience with network monitoring and management tools
  • Ability to diagnose and resolve issues in high‑pressure environments
  • Excellent communication and documentation skills
Security Requirements
  • Must hold active SC Clearance
Desirable
  • Experience working in secure or government environments
  • Exposure to firewall technologies and network security principles
  • Relevant certifications (e.g. JNCIA/JNCIS, Extreme certifications, CCNA/CCNP)
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