Senior Network Engineer, Cisco

Salary: £40,000 - 70,000 per year

Requirements:

• Experience configuring and managing Cisco and Palo Alto routers, switches, and other network hardware
• Strong understanding of networking concepts, protocols, and principles, such as TCP/IP and UDP
• Experience with network security technologies, such as firewalls, IDS/IPS, and VPNs
• Familiarity with cloud networking concepts and services, particularly AWS networking, such as VPC, Direct Connect, and Route 53
• Collaborative and pragmatic approach, with confidence working with clients
• Cisco Certified Network Associate (CCNA) or Cisco Certified Network Professional (CCNP) certification is beneficial

Responsibilities:

• Configure, deploy, and maintain network infrastructure, including Cisco routers, Palo Alto firewalls, and other network devices
• Troubleshoot network issues to minimise disruption and ensure reliable performance
• Collaborate with customer networking teams, stakeholders, and wider infrastructure teams to design, implement, and enhance network infrastructure and security measures, including firewalls, VPNs, and intrusion detection systems
• Monitor network performance, identify opportunities for improvement, and implement enhancements to strengthen efficiency, security, and resilience
• Contribute to increased infrastructure automation using IaC, Terraform, and Python scripting

Technologies:

• AWS
• Cloud
• Cisco
• Hardware
• Network
• Python
• Security
• TCP/IP
• Terraform

More:

We are a scaling technology company specialising in renewable energy storage and trading. This is a senior, hands-on Network Engineer role based in London, with a hybrid working model that allows you to work from home and join our team in the London office twice a week. We offer a salary of up to £75,000, 25 days of annual leave in addition to public holidays, flexible carry-over and a festive office closure, enhanced parental leave, an Employee Assistance Programme, and social and team events.

last updated 40 week of 2026