Company profile

FourNet is one of the fastest growing technology businesses in the UK; listed in the Sunday Times Tech Track 100 and the FT1000 Fast Track, we are recognised as the fastest organically growing business within our sector by Megabyte.

As one of the UK's most successful cloud and managed services providers we have grown year on year for the last 17 years, have won multiple awards and work with some of the most secure, critical, and commercially driven organisations in the UK.

Role profile:

The Senior Network Engineer is responsible for the technical design, implementation, configuration, optimisation and ongoing support of secure enterprise networking solutions across customer environments.

The role combines Professional Services project delivery with Tier 3 technical escalation, providing advanced technical expertise across LAN, WLAN, SD-WAN, network security, SASE, data centre and cloud networking technologies.

The engineer will work closely with Technical Design, Project Management, Service Operations, Security and customer technical teams to translate approved designs and Low-Level Designs (LLDs) into secure, supportable and production-ready solutions.

A key part of the position is providing subject matter expertise for complex incidents and escalations, including root cause analysis, vendor engagement and the identification of long-term technical improvements.

The role will have a strong focus on Cisco and Meraki secure networking technologies, while requiring an understanding of wider enterprise networking and security principles.

The position is primarily remote, with UK-wide travel required for customer workshops, implementation activities, site surveys, migrations, technical whiteboard sessions and vendor training.

Key Responsibilities:

• Deliver customer-facing network and security projects from approved technical designs and Statements of Work.
• Review High-Level Designs (HLDs), Low-Level Designs (LLDs) and implementation documentation prior to deployment.
• Configure, deploy and migrate enterprise network and security infrastructure.
• Participate in customer workshops, technical discovery sessions and implementation planning.
• Produce implementation plans, Methods of Procedure (MOPs), change documentation and rollback plans.
• Undertake pre-deployment validation and identify technical risks, dependencies and prerequisites.
• Execute customer changes within agreed change-control processes and maintenance windows.
• Support transition of completed Professional Services projects into BAU and managed service operations.
• Act as a senior technical escalation point for complex networking and security incidents.
• Provide advanced troubleshooting for issues that cannot be resolved by first- and second-line operational teams.
• Troubleshoot complex LAN, WLAN, WAN, SD-WAN and security problems across multi-vendor customer environments.
• Identify recurring incidents and recommend permanent fixes, architectural improvements or automation opportunities.
• Capture technical knowledge from complex escalations and feed this into internal documentation and operational teams.

Technical Profile

The Senior Network Engineer is expected to have experience of the following technologies:

• Cisco Enterprise
  • Excellent routing and switching experience
  • Catalyst switching including 9000 series
  • Cisco Nexus series
  • Cisco Wireless
  • Cisco ISR
  • Cisco Secure Firewall FTD
  • Cisco Secure Network Analytics
  • DNA Center, ISE, ACI, SD-Access
  • Secure access and Secure connect
  • Cisco Secure Access, Umbrella, Duo, Cisco Secure Endpoint.
• Meraki
  • MX series (Security & SD-WAN), MS series (Switching), MR (Wireless)
  • Meraki Dashboard
  • Meraki Adaptive Policy and integration with ISE.
  • Meraki cloud APIs for automation and reporting.
• General
  • Micro and macro segmentation best practice
  • Use of zoning and VRFs
  • Zero Trust Network Access
  • SD-WAN application band steering policy and management

Technical capabilities

Fournet will provide continual development and training, both within the direct vendor domain and across supplementary disciples and frameworks. The following technical capabilities are highly desired:

• Cisco Certified Network Professional; Enterprise (CCNP) (Required)
• Cisco Meraki Solutions Specialist (Required)
• Cisco Certified Network Professional; Security (CCNP) (Desired)
• Cisco Certified Specialist Enterprise Design (Desired)

Our Values and Behaviours

• We deliver what matters to our customers - produces accurate, timely and useful financial information, understands how Finance supports internal and external customers, and prioritises work that enables good business decisions.
• We work as one team - builds positive relationships across Finance and the wider business, shares information, communicates clearly and works collaboratively to meet deadlines and resolve issues.
• We own it and make it happen - takes responsibility for the accuracy and completeness of their work, follows issues through to resolution, meets agreed deadlines and raises risks or errors promptly.
• We raise the bar - looks for ways to improve controls, reporting and processes, learns from feedback and mistakes, and develops their knowledge and skills to deliver consistently high-quality work.

Don’t hesitate to apply for this role if you have the required skills.