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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Network Engineer - Basildon - **Company:** Arc - **Location:** Basildon, UK (Remote available) - **Experience:** Expert - **Salary:** £37,152.0 - **Contract:** Permanent contract - **Skills:** Border Gateway Protocol, Cisco PIX, Data Centers, Enhanced Interior Gateway Routing Protocol, Trunking, Hyper-V, Internet Protocol Security (IP SEC), Internetworking, Network Layer, Windows Servers, Network Installation Services, Routing, Cisco Nexus Switches, Peering, Virtual Local Area Networks, Nx-os, Firewalls (Computer Science), Amazon Virtual Private Cloud (VPC), Fortinet, Firepower, Cisco, SSL VPN, Vmware - **Published:** July 3, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5785977248 ## About the Role * Demonstrable senior-level network engineering experience within an MSP, ISP or service-provider environment * Fluent in BGP - design, peering, route policy and production troubleshooting * Strong Cisco routing and switching, including Nexus (NX-OS, datacentre/vPC) and ASR (IOS-XE / edge) * Solid Layer 2 / Layer 3 fundamentals - VLANs, trunking/tagging, STP, EIGRP, redundancy/HA design * Datacentre network experience - resilient core, structured cabling, copper and fibre optic types/connectors * Strong Firewall and Fortinet experience -Firewalling at scale with central management: - FortiManager - Zone-based firewalling and NAT - IPS, web and AV filtering policies - IPSec site-to-site and SSL VPN * Understanding of Internet connectivity types (FTTC / FTTP / leased line) and transit/peering concepts * Strong, methodical troubleshooting skills * Excellent customer-facing manner and clear technical communication * Full UK driving licence Desirable * Cisco CCNP (or equivalent) and Fortinet NSE / FCP certifications * Multi-vendor switching and wireless exposure - HPE Aruba, Cisco Meraki, Ubiquiti UniFi * Additional firewall vendor exposure - Sophos, Cisco ASA/Firepower * Windows server concepts and virtualisation understanding (Hyper-V / VMware) * Experience supporting CNI/Data Centre or other regulated, high-availability environments Personal Attributes * Honest, dependable and reliable - particularly around on-call and customer commitments * Calm under pressure and methodical when troubleshooting * Self-managing, able to take ownership and see work through end-to-end * Customer- and service-focused team player * Committed to continual professional development ## Description As a Senior Network Engineer you will be a senior technical authority for the design, delivery and ongoing support of both our internal service-provider/datacentre network and our managed customer estates, working alongside our existing network and ISP engineering team. This is a hands-on senior role spanning routing, switching, firewalling and wireless across multiple vendors - with Fortinet (FortiGate / FortiManager) and Cisco (Nexus / ASR) at its core and a strong service-provider routing element built on BGP. You will own installation and migration projects end-to-end and play a key role in our 24x7 on-call rota covering CNI customers and our own ISP/datacentre platform. The role is a mix of office and home-based working, with customer site visits for installation and support., * Own network installation and migration projects end-to-end, liaising with the Network Manager, Account Managers and customers * Maintain and develop our ISP and datacentre network, including core routing, peering/transit and edge connectivity * Configure, manage and troubleshoot a multi-customer Firewall deployments (ForitGate/FortiManager/Sophos XG) * Design, deploy and support Cisco Nexus (datacentre) and ASR (edge / service-provider) platforms * Own BGP design, peering, route policy and troubleshooting across internal and customer networks * Participate in the 24x7 out-of-hours on-call rota supporting CNI customers and our ISP/datacentre platform (on-call allowance and callout payments apply - see package details above) * Maintain and develop monitoring and alerting systems ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right) - [Generating code with Angular schematics](https://www.wearedevelopers.com/videos/129-generating-code-with-angular-schematics) - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) ## Related Articles - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [UK Business Culture and Etiquette](https://www.wearedevelopers.com/magazine/326-uk-business-culture-and-etiquette) - [IT Salaries in UK](https://www.wearedevelopers.com/magazine/288-it-salaries-in-uk)