Senior Network Engineer

UST; Greater London; Hybrid; GBP 140,000 - 210,000; Full time

Job summary

UST is seeking a Senior Network Security Engineer in London (Hybrid) to design, implement, and secure enterprise and cloud networking across AWS, Azure, and GCP. You will manage routing, switching, and security platforms, including Palo Alto, Check Point, and F5 solutions.

Key responsibilities include implementing Zero Trust, VM/VPN connectivity, and infrastructure as code with automation tools. The role demands 15+ years of experience in network engineering, cloud networking, and security, with

Qualifications

• Senior-level network security engineering experience in large scale enterprise environments.
• Hands-on expertise with Palo Alto and Check Point technologies.
• Experience with cloud networking across AWS/Azure/GCP.

Responsibilities

• Design, implement, and support enterprise and cloud networking solutions across AWS, Azure, and GCP.
• Manage and optimize routing and switching environments (BGP, OSPF, EIGRP, VLANs, STP, QoS, Multicast).
• Administer and enhance F5 Load Balancers (LTM, GTM, ASM) for high availability and performance.
• Manage Infoblox DNS, DHCP, and IPAM services.

Skills

Palo Alto

Check Point

Network security

Cloud networking

Automation

Python

Ansible

Terraform

PowerShell

F5 BIG-IP

Infoblox

SolarWinds

Splunk

Wireshark

Kubernetes networking

Tools

F5 LTM/GTMs/ASM

Infoblox

SolarWinds

Splunk

Wireshark

Terraform

PowerShell

Job description

Role: Senior Network Security Engineer – Palo Alto, Check Point & Enterprise Infrastructure

Location: London (Hybrid) - 3 days on site

Employment Type: Permanent / Fixed-Term Contract

Start Date: ASAP

About the role:

We are seeking a highly skilled Senior Network Security Engineer to join a growing technology team responsible for designing, securing, and optimizing enterprise and cloud network infrastructure across a complex global environment.

This role is primarily focused on network security engineering, and we are particularly interested in professionals with strong hands‑on expertise in Palo Alto and Check Point security technologies. The successful candidate will play a key role in strengthening network security posture, delivering secure connectivity solutions, and supporting enterprise‑wide transformation initiatives.

You will be responsible for designing, implementing, and managing next‑generation security solutions while ensuring the network infrastructure remains secure, resilient, scalable, and compliant with industry standards.

What You'll Be Doing:

• Design, implement, and support enterprise and cloud networking solutions across AWS, Azure, and GCP.
• Manage and optimize routing and switching environments using technologies including BGP, OSPF, EIGRP, VLANs, STP, QoS, and Multicast.
• Administer and enhance F5 Load Balancers (LTM, GTM, ASM) to deliver high availability and performance.
• Manage Infoblox DNS, DHCP, and IPAM services to support efficient network operations.

Security, Compliance & Risk Management

• Configure and manage security policies across Palo Alto, Check Point, Cisco ASA, and ForeScout platforms.
• Support the implementation of Zero Trust Architecture, micro‑segmentation, VPNs, and secure access solutions.
• Lead network patching, firmware upgrades, vulnerability remediation, and security hardening activities.
• Ensure compliance with industry standards and frameworks, including ISO 27001, NIST, CIS Benchmarks, and PCI-DSS.
• Partner with Cyber Security teams to identify risks, strengthen controls, and enhance enterprise security posture.

Performance, Reliability & Automation

• Monitor, troubleshoot, and optimize enterprise, cloud, and security infrastructure.
• Resolve complex LAN, WAN, cloud, and firewall issues to maintain business continuity.
• Drive automation and operational efficiency using tools such as Python, Ansible, Terraform, and PowerShell.
• Create and maintain technical documentation, network diagrams, security standards, and operational procedures.
• Mentor engineers and contribute to continuous improvement initiatives across the wider technology team.
• Minimum of 15+ years' experience in Network Engineering, Cloud Networking, and Network Security.
• SIEM, IDS/IPS, and endpoint security integration.
• Network monitoring and observability tools such as SolarWinds, LogicMonitor, Splunk, BigPanda, or Wireshark.
• Container and Kubernetes networking concepts.

Cisco Networking & Routing/Switching

• Palo Alto, Check Point, Cisco ASA, and ForeScout
• Infoblox DNS/DHCP/IPAM
• AWS, Azure, and/or GCP Networking
• Hands‑on experience with vulnerability management, patching, firmware upgrades, and compliance controls.
• Strong understanding of network security principles, Zero Trust Architecture, SD-WAN, and micro‑segmentation.
• Experience with Infrastructure as Code (IaC) and network automation.
• Excellent troubleshooting, stakeholder engagement, and communication skills.
• Experience working in complex enterprise or multi‑cloud environments.