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Senior Network Infrastructure Engineer

United Kingdom, Manchester Employment contract · Job Posted January 25, 2026
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Job Description

As a Senior Engineer, your role is to provide support for core network infrastructure, ensuring high availability across key components including core and edge routing, switching, and hybrid‑cloud connectivity. Act as a senior escalation point for the Network team and wider technical groups, serving as the technical lead on business‑critical projects. This is a 12 month FTC opporunity covering parental leave.

Job Responsibility

  • Act as lead technical engineer on critical network projects
  • Plan and execute network-wide core replacement programs under change control and CAB processes
  • Serve as an escalation point for technical issues internally and across teams
  • Monitor, diagnose and resolve problems within the ANS infrastructure
  • Proactively work to identify areas of improvement in the platform
  • Maintain good interdepartmental relationships with other technical and commercial teams through regular interaction and collaboration
  • Responsible for the generation of LLD from HLD
  • Ensure our infrastructure is up to date by planning & performing patching and firmware upgrades
  • Working with vendors to raise escalations and troubleshoot issues
  • Produce and maintain high quality technical documentation
  • Out-of-hours work on core systems
  • Deliver working within ANS change control, CAB and incident management
  • Plan, prepare and deliver for upcoming maintenance works

Requirements

  • Previous experience as a Network engineer working on Projects, following an Agile framework
  • Experience with Arista and Cisco Switching technologies, including BGP, ISIS, VXLAN and MPLS
  • Experience with Cisco ASA and Fortigate Firewalling
  • Proven technical ability and troubleshooting skills
  • Ability to produce and maintain Low Level Design Documentation
  • Significant Attention to detail
  • Good communication skills
  • Ability to work collaboratively as well as self-driven for individual tasks
  • Passion to deliver projects on time
  • Ability to take ownership of areas and problems

Nice to have

Experience leading large scale projects is desirable

What we offer

  • 25 days’ holiday, plus you can buy up to 5 more days
  • Birthday off
  • An extra celebration day
  • 5 days’ additional holiday in the year you get married
  • 5 volunteer days
  • Private health insurance
  • Pension contribution match and 4 x life assurance
  • Flexible working and work from anywhere for up to 30 days per year (some exceptions)
  • Maternity: 16 weeks’ full pay
  • Paternity: 3 weeks’ full pay
  • Adoption: 16 weeks’ full pay
  • Company social events
  • Electric car scheme
  • 12 days of personal growth development time
  • Ride to Work Scheme

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