Senior Network Engineer

UST; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

UST is seeking a Senior Network Engineer to design, secure, and optimize enterprise and cloud network infrastructure across a complex global environment. You will lead delivery of modern networking and security solutions across cloud platforms, next-generation firewalls, automation technologies, and compliance initiatives to keep our network secure, resilient, and scalable.

If you are passionate about solving complex technical challenges and driving operational excellence while working with

Qualifications

• 8+ years in Network Engineering, Cloud Networking, and Network Security.
• Hands-on experience implementing security policies across Palo Alto, Check Point, Cisco ASA, and ForeScout.
• Experience with Zero Trust Architecture, micro-segmentation, VPNs, and secure access controls.
• Familiarity with Infrastructure as Code (IaC) and network automation.
• Strong troubleshooting, stakeholder engagement, and communication skills.

Responsibilities

• Design, implement, and support enterprise and cloud networking solutions across AWS, Azure, and GCP.
• Manage routing and switching with BGP, OSPF, EIGRP, VLANs, STP, QoS, and Multicast.
• Administer and optimize F5 Load Balancers (LTM, GTM, ASM) for high availability.
• Manage Infoblox DNS, DHCP, IPAM services to support operations.
• Mentor engineers and contribute to continuous improvement across the tech team.

Skills

BGP

OSPF

EIGRP

VLANs

STP

QoS

F5 Load Balancers

Zero Trust Architecture

IaC / Network Automation

Python

Ansible

Terraform

PowerShell

Tools

AWS

Azure

GCP

Infoblox

Palo Alto

Check Point

Cisco ASA

ForeScout

SolarWinds

Splunk

Wireshark

Job description

Location: London (Hybrid)

Employment Type: Permanent / Fixed-Term Contract

Start Date: ASAP

Build, Secure and Transform Enterprise Networks

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

This is an opportunity to lead the delivery of modern networking and security solutions, working across cloud platforms, next-generation firewalls, automation technologies, and compliance initiatives. You'll play a critical role in ensuring our network infrastructure remains secure, resilient, scalable, and future-ready.

If you're passionate about solving complex technical challenges, driving operational excellence, and working with leading technologies, we'd love to hear from you.

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.

What We're Looking For:

• Minimum of 8+ years' experience in Network Engineering, Cloud Networking, and Network Security.
• Strong expertise across:

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.
• 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.