Senior Network Engineer - Consultancy

Responsibilities

• Design, build, and implement enterprise network solutions
• Deliver across a major data centre transformation programme
• Support network migrations, optimisation, and traffic engineering
• Decommission legacy infrastructure and consolidate services
• Configure and manage routing, switching, and firewall technologies
• Own network performance, stability, and continuous improvement
• Produce technical documentation including runbooks and handovers
• Collaborate with cross-functional teams across infrastructure and operations
• Support planned migration activities (including occasional weekend work)

Skills / Must Have

• Strong experience with Cisco Data Centre technologies
• Solid Routing & Switching expertise (CCNP level or equivalent)
• Proven ability to configure and troubleshoot enterprise-grade networks
• Hands-on experience with Fortinet / FortiGate firewalls
• Strong understanding of network security principles
• Ability to operate both independently and within a team
• Experience working in complex, large-scale environments

Desirable Skills

• Experience with Juniper networking technologies
• Exposure to Palo Alto firewalls
• Background in financial services or regulated environments

Working Setup

• Cisco Data Centre networking technologies
• Enterprise routing and switching
• Fortinet / FortiGate firewalls
• Multi-vendor environments (Cisco, Juniper)
• Large-scale enterprise network infrastructure
• Data centre environments and migrations

Location & Working Pattern

• London – Hybrid working
• 3 days onsite (likely reducing to 1–2 days)
• Occasional data centre visits
• Some out-of-hours work during migration phases

Benefits

• Work on a business-critical transformation programme
• High ownership within a core engineering team
• Exposure to large-scale, complex network environments
• Strong visibility across infrastructure and leadership teams

Salary

• £70,000 base salary
• Competitive package depending on experience

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