Senior Network & Security Engineer

Intec Select; England; Hybrid; GBP 90,000 - 110,000; Full time

Job summary

A leading global banking organisation is seeking a motivated Senior Network & Security Engineer to manage and support their enterprise network infrastructure. The role includes resolving network incidents and optimising performance across a highly regulated environment. Candidates should have over 5 years of experience, particularly with Cisco ACI and firewall technologies. This position offers competitive compensation up to £100,000 plus a 20% bonus and hybrid working arrangements based in London (Liverpool Street).

Qualifications

• 5+ years’ experience in network design, architecture, and delivery within complex, regulated environments.
• Strong operational experience supporting and troubleshooting enterprise network infrastructure.
• Proven experience delivering network projects and producing high-quality technical documentation.

Responsibilities

• Own and resolve network and security incidents end-to-end.
• Support and maintain enterprise network infrastructure including routing, switching, firewalls, and load balancers.
• Monitor and optimise network performance and availability.

Skills

Cisco ACI

Check Point

Palo Alto

Routing and Switching

Load balancers (F5 Big-IP)

Network design and architecture

Technical documentation

Job description

Senior Network & Security Engineer – Banking – London (Liverpool Street) – Up to £100,000 Basic Salary + 20% Bonus + Hybrid Working

Overview

We are seeking an experienced Network & Security Engineer to join a leading global banking organisation, supporting a highly regulated enterprise network environment across EMEA. This role is responsible for the stability, security, and performance of core network and firewall infrastructure, combining incident ownership with project delivery and ongoing operational support.

This is a hands‑on role offering strong technical exposure, enterprise-scale networking, and the opportunity to work in a mature, well‑funded financial services environment.

Key Responsibilities

• Own and resolve network and security incidents end-to-end, acting as a senior technical escalation point
• Support and maintain enterprise network infrastructure including routing, switching, firewalls, and load balancers
• Monitor and optimise network performance and availability
• Deliver network and security project tasks to agreed timelinesMaintain accurate network diagrams and technical documentation
• Work closely with internal teams and third‑party vendors to support operations and change delivery
• Participate in shift, on‑call, and out-of-hours support as required

Skills & Experience

• Strong hands‑on and design experience with Cisco ACI in large‑scale enterprise environments
• Firewall expertise across Check Point and Palo Alto, including policy design, implementation, and support
• Advanced routing and switching experience, covering Layer 2 & 3 technologies (EIGRP, OSPF, BGP, VLANs, high availability)
• Load balancer experience (e.g. F5 Big‑IP or equivalent)
• 5+ years’ experience in network design, architecture, and delivery within complex, regulated environments
• Strong operational experience supporting and troubleshooting enterprise network infrastructure
• Proven experience delivering network projects and producing high‑quality technical documentation

Working Pattern

• Monday to Friday core hours
• Participation in a rotating shift pattern (2 in 6)
• Early shifts from 7:00 am
• Late cover until 6:00 pm
• On‑call, weekend, and occasional bank holiday working as required
• Up to £100,000 Basic Salary
• Up to 20% Bonus
• Hybrid working (2–3 days onsite – Liverpool Street)

Seniority Level

Mid‑Senior level

Employment Type

Full‑time

Job Function

Information Technology

Industries

Computer and Network Security and Financial Services