Network Security Engineer

We are looking for a Network Security Engineer to join our technical team.

You will own the day-to-day health of our network estate and the networks

we support under service contracts. The role mixes hands-on engineering

with incident response and change work.

This is a hands-on position. You will be expected to configure kit, chase

root causes and write things down properly. You will work with senior

engineers and with client technical contacts.

WHAT YOU WILL DO

• Monitor network performance and availability using tools such as

SolarWinds. Triage alerts and resolve incidents within agreed SLAs.

• Investigate connectivity and performance faults. Diagnose latency,

packet loss and interface errors. Complete root cause analysis and

record clear findings.

• Configure and support Cisco Catalyst and Nexus switching. Work with

VLANs, trunking and spanning tree.

• Make routing and access control changes on Cisco routers and switches.

Apply device hardening and secure management standards.

• Administer multi-vendor firewalls including Cisco ASA, Cisco FTD and

Palo Alto. Manage policy, NAT, security zones and object groups.

• Review network behaviour analytics alerts. Validate anomalies against

baseline traffic and escalate confirmed threats with evidence.

• Run vulnerability scans and produce reports using Qualys. Track

remediation to closure and verify fixes by re-scan.

• Support network access control operations, including Cisco ISE.

• Raise, quality check and close incident and change tickets. Make sure

risk, rollback and closure notes are complete and accurate.

• Implement approved changes during maintenance windows. Carry out pre

and post checks and update documentation.

• Act as a technical point of contact for client teams. Give clear,

timely updates.

A degree in Computer Science, Networking, Information Technology or a

related subject. Equivalent experience will be considered.

• Cisco CCNA, or equivalent demonstrable routing and switching knowledge.

• Practical experience configuring enterprise switches and routers.

• Working knowledge of firewall policy administration on at least one

major vendor platform.

• Understanding of OSPF, VLANs, STP, ACLs and network segmentation.

• Experience with a network monitoring platform.

• Experience working to SLAs in an incident and change management process.

• Clear written English. You will be writing incident notes and change

records that clients read.

• Right to work in the UK, or eligibility for sponsorship.

NICE TO HAVE

• CompTIA Security plus, or a similar security certification.

• Experience with Qualys or another vulnerability management tool.

• Exposure to Microsoft Azure, Microsoft 365 or Active Directory.

• Experience with Cisco ISE or another NAC platform.

• Experience in a managed service or multi-client environment., * Master’s (preferred), * Network engineering: 2 years (preferred)

Salary: £33,400 per year, Salary of £33,400 per year.

• 28 days holiday including bank holidays.

• Workplace pension scheme.

• Support towards further certifications.

• A small team where your work is visible and you can grow quickly.

RapidMinds Ltd is a London-based engineering and technology services company. We work in energy, delivering solar PV, battery storage and electrical infrastructure projects across the UK. We also provide software and IT services to our clients.