Senior Extreme Networks Engineer/Consultant Required – Extreme Fabric Connect (SPB) Migration

Energize Recruitment Solutions Ltd
Contact person: Jack Howard
Hamburg,  Germany
80% remoteFreelanceStart date 12/2026Duration 2 months60% workload
ITNetwork Configuration and Change ManagementNetwork ArchitectureNetwork EngineeringNetwork Information ServicesExtreme Programming

Description

Energize are looking for a Senior Extreme Networks Consultant to support a critical infrastructure (KRITIS) customer in Hamburg, focusing on the design and migration of an existing Layer 2/Layer 3 network to Extreme Fabric Connect (SPB).

The initial phase will focus on network design, requiring a technically strong consultant to validate network concepts and provide expert guidance, before a potential longer-term extension into the hands-on implementation/integration phase, involving the configuration and migration of Extreme Networks infrastructure.

Key Requirements:
  • Senior Network Engineer / Consultant with extensive hands-on Extreme Networks experience
  • Strong expertise in Extreme Fabric Connect (SPB), including design, configuration and implementation
  • Proven experience migrating live Layer 2/Layer 3 networks to Extreme Fabric Connect
  • In-depth knowledge of Fabric Engine (VOSS), Switch Engine (EXOS) and Extreme switching/routing
  • Good understanding of SPB technologies, including IS-IS, L2/L3 VSNs, Fabric Attach and SMLT/vIST
  • Experience developing and validating network designs, migration plans and cutover strategies
  • Hands-on experience configuring Extreme Networks switches, routers and core switches
  • Experience in critical infrastructure (KRITIS), OT or comparable high-availability environments
  • Understanding of OT network segmentation, availability and legacy infrastructure integration
  • Strong technical consulting skills, with the ability to review and challenge network designs
  • German fluent required

Details:
  • Start date: Mid-January 2027 (mid-December 2026 also possible)
  • Contract duration: Initial contract until the end of February 2027, with potential long-term extensions (next phase of project)
  • Capacity: Part-time initially, approximately 10 working days across 1–2 months (30–40% per week)
  • Location: Hamburg, Germany – Initial phase fully remote; up to 2 days per week on-site during potential implementation
  • German fluent required
If this opportunity sounds like a great match for you, please reply with your CV and we can arrange a call.

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