Digital Waffle
3rd Line Support Engineer (Networking)
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3rd Line Support Engineer (Networking)
3rd Line Support Engineer (Networking)
Location: London, UK (Hybrid)
Salary: £45,000 - £55,000
About the Role
We're looking for an experienced Network Infrastructure Engineer to join a growing technical team. You'll be responsible for designing, implementing and supporting customer network environments, delivering infrastructure projects, and acting as a senior technical escalation point. This role would suit someone who enjoys working across multiple technologies, solving complex technical issues and building long-term relationships with customers.
Key Responsibilities
- Design, implement and support secure, resilient customer network infrastructure.
- Configure and maintain routers, switches, firewalls, wireless networks and VPN connectivity.
- Support LAN, WAN and SD-WAN environments, ensuring high levels of performance and availability.
- Manage routing, switching, VLANs, IP addressing, DNS and DHCP.
- Troubleshoot complex networking and infrastructure issues across customer environments.
- Support Windows Server, Active Directory and Microsoft 365 environments.
- Maintain and administer VMware and/or Hyper-V virtualisation platforms.
- Deliver infrastructure upgrades, migrations, deployments and refresh projects.
- Monitor network performance, security and system health, proactively identifying improvements.
- Produce and maintain technical documentation, network diagrams and implementation plans.
- Participate in customer onboarding, infrastructure reviews and technical assessments.
- Provide both remote and onsite support, working closely with customers to deliver exceptional service.
- Collaborate with vendors and technology partners to deliver the best technical solutions.
- Assist with technical pre-sales activities and solution design where required.
- Support and administer Microsoft Azure environments, including virtual machines, virtual networking, storage, Entra ID (Azure AD) and cloud-based infrastructure services.
- Assist with Azure migrations, hybrid cloud deployments and ongoing optimisation of customer cloud environments.
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About You
We're looking for someone with a strong networking background who also has broad infrastructure experience and enjoys working in a customer-facing environment. You'll ideally have:
- 3+ years' experience in a Network Engineer, Infrastructure Engineer or similar role.
- Strong understanding of TCP/IP, UDP, ICMP and core networking principles.
- Excellent knowledge of routing, switching, VLANs, DNS, DHCP and IP addressing.
- Experience with networking platforms such as Fortinet, Sophos, Cisco Meraki or similar.
- Good experience supporting Microsoft technologies including Windows Server, Active Directory and Microsoft 365.
- Experience with VMware and/or Hyper-V.
- Excellent troubleshooting and problem-solving skills.
- Strong communication skills with the ability to engage confidently with customers.
- A full UK driving licence (preferred).
- Experience supporting and administering Microsoft Azure infrastructure, with a good understanding of Azure networking, virtual machines, storage and identity services (Entra ID/Azure AD).
- Experience working within hybrid on-premises and Azure cloud environments.
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Desirable
- CCNA, CCNP or equivalent networking certifications.
- Previous MSP experience.
- Microsoft Azure experience or certifications.
- Knowledge of VoIP and telecommunications.
- Cyber security awareness and best practices.
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