Network Migration Engineer

🔒 Confidential Employer
Posted 6 May 2026
LOCATION
Sheffield
TYPE
Temporary
LEVEL
Mid-Senior level
SALARY
£50,000 / year
CATEGORY
Technology
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion

SKILLS

Network configuration Dark fibre Routing and switching VLANs IP networking Network troubleshooting Multi-vendor environments Documentation

FULL DESCRIPTION

Network Migration Engineer

Salary: £40,000 - £50,000

Location: Sheffield Head Office

Type: Temporary, Full Time

Closing: 21 days at 23:59 BST

The Vacancy

We are seeking an experienced Network Migration Engineer to support a large-scale dark fibre rollout programme on a contract basis. This role focuses on the configuration of core network equipment, supporting and directing field engineering teams, and delivering the migration of sites from standard tail links and NNI circuits to dark fibre. Working from the office, you will play a key role in ensuring network changes are designed, implemented, and validated correctly, with responsibility for delivering secure, stable, and well-documented network migrations across multiple sites.

What You’ll Be Doing

  • Network Configuration & Integration: Configure and manage core network equipment to support dark fibre deployments; implement routing, switching, VLANs, and segmentation; ensure correct integration of local staff networks, OSNs, and core services; work with multi-vendor environments.
  • Migration Delivery: Support migration from tail links and NNI circuits to dark fibre; create and execute detailed migration plans; coordinate and support site migrations; provide technical direction to field engineering teams.
  • Troubleshooting & Validation: Provide fault finding, diagnostics, and performance verification; validate network configurations; interpret network diagrams and site designs.
  • Collaboration & Documentation: Liaise with project managers, field engineers, and third-party suppliers; produce clear configuration and migration documentation; ensure compliance with security, operational, and safety standards.

What We’re Looking For

Essential

  • Proven experience configuring core network equipment (routers, switches, firewalls, OOB devices)
  • Strong experience with dark fibre networks and site migrations
  • Solid understanding of network fundamentals including routing, switching, VLANs, and IP networking
  • Experience working with local staff networks and OSN integration
  • Ability to interpret network diagrams, schematics, and technical designs
  • Proven track record in network troubleshooting and validation
  • Strong attention to detail with accurate configuration and documentation
  • Ability to work independently in a structured environment

Desirable

  • Experience with carrier-grade equipment: Edgecore switches (OcNOS), Opengear console servers, APC PDUs and UPS systems, MikroTik routers and switches
  • Understanding of fibre principles (attenuation, ILM, OTDR, IOLM)
  • Knowledge of network security and access control practices
  • Experience on large-scale ISP rollout or migration programmes
  • Exposure to multi-vendor network environments
  • Familiarity with MPLS, load balancing, and network security protocols
  • Knowledge of ITIL frameworks

About [Employer hidden — sign up to reveal]

Our team delivers connectivity and technology solutions to hundreds of thousands of users in multi-tenant buildings in three sectors, in multiple languages across twelve countries. The service we deliver empowers people to live life and work productively, and we strive to create an environment that allows our team to do the same.

[Employer hidden — sign up to reveal] Rewards

  • Bonus Scheme (profit share)
  • Birthday day off
  • Flexible Holiday scheme
  • Hybrid working
  • Increased Holiday based on length of service
  • Recognition scheme

(Please note, benefits may vary depending on employee location)

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