Senior Network Engineer Cisco

Client Server Limited; Greater London; Hybrid; GBP 65,000 - 75,000; Full time

Benefits offered by this job

25 days holidays

Enhanced parental leave

Employee Assistance Programme

Team events

Job summary

Client Server Limited in London is seeking a Senior Network Engineer to design, deploy and manage Cisco and Palo Alto based network infrastructure, ensuring reliability and security while supporting scaling energy storage and trading platforms.

You will work hybrid from London, with hands-on duties on routers, switches, firewalls, VPNs, and IaC automation using Terraform and Python. CCNA/CCNP are nice to have.

Qualifications

• Strong experience configuring and managing Cisco and Palo Alto routers, switches and security devices.
• Knowledge of TCP/IP, UDP and general networking principles.
• Familiarity with firewalls, IDS/IPS, VPNs and cloud networking concepts (AWS) preferred.

Responsibilities

• Configure, deploy and maintain network infrastructure to ensure reliability and security.
• Collaborate with customer networking teams and stakeholders to design, implement and enhance networks.
• Monitor performance and drive IaC-based automation using Terraform and Python.

Skills

Networking concepts

Client collaboration

Problem solving

Education

Cisco CCNA/CCNP certification (nice to have)

Tools

Cisco

Palo Alto

Firewalls

VPNs

IDS/IPS

AWS VPC

Terraform

Python

Job description

London, Greater London | £65k - £75k per year

Senior Network Engineer (Cisco Palo Alto) London / WFH to £75k

Are you a network technologist seeking a new opportunity?

You could be progressing your career in a senior, hands-on Network Engineer role at a scaling technology company that specialises in renewable energy storage and trading.

As a Senior Network Engineer you will configure, deploy and maintain network infrastructure, including Cisco routers, Palo Alto firewalls and other network devices, troubleshooting issues to minimise disruption and ensure reliable performance.

Collaborating with customer networking teams, stakeholders and wider infrastructure teams, you'll help design, implement and enhance network infrastructure and security measures, including firewalls, VPNs and intrusion detection systems.

You'll also monitor network performance, identify opportunities for improvement and implement enhancements to strengthen efficiency, security and resilience as well as contributing to increased infrastructure automation using IaC, Terraform and Python scripting.

Location / WFH:

You can work from home in a hybrid model, joining the team in London twice a week.

About you:

• You're a skilled Network Engineer with experience of configuring and managing Cisco and Palo Alto routers, switches and other hardware
• You have a strong understanding of networking concepts, protocols and principles e.g. TCP/IP, UDP
• You have experience with network security technologies, such as firewalls, IDS/IPS, and VPNs
• You're familiar with cloud networking concepts and services, particularly AWS networking (e.g., VPC, Direct Connect, Route 53)
• You're collaborative and pragmatic, comfortable working with clients
• Nice to have: Certifications such as Cisco Certified Network Associate (CCNA) or Cisco Certified Network Professional (CCNP)

What's in it for you:

• Salary to £75k
• 25 days holidays in addition to public holidays, carry over flex and festive office closure
• Enhanced parental leave offerings with 6 months of full salary for the primary caregiver and 1 month for the secondary caregiver
• Employee Assistance Programme
• A range of social and team events