Senior Network Engineer_Cloud, Security & Infra (Architect II - Cloud Infrastructure Services)

UST
Charing Cross, United Kingdom
yesterday

Role details

Contract type
Temporary contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Senior

Job location

Charing Cross, United Kingdom

Tech stack

Amazon Web Services (AWS)
Azure
Border Gateway Protocol
Spanning Tree Protocols
Cisco PIX
Cloud Computing
Computer Security
Computer Networks
Dynamic Host Configuration Protocol
DNS
Enhanced Interior Gateway Routing Protocol
Firmware
Intrusion Detection Systems
Virtual Private Networks (VPN)
Python
Network Security
Multicasting
Network Architecture
Network Diagrams
Network Monitoring
Routing
Network Segmentation
Cisco Nexus Switches
Open Shortest Path First
PCI Data Security Standards
Powershell
Ansible
Zero Trust Network Access
Security Information and Event Management
Wireshark
Virtual Local Area Networks
Software Vulnerability Management
Wide Area Networks
Computer Networking Systems
Google Cloud Platform
Load Balancing
Computer Network Operations
Cloud Platform System
System Availability
Grafana
Multi-Cloud
Firewalls (Computer Science)
Infrastructure as Code (IaC)
Forescout
Kubernetes
SolarWinds (Software)
CIS Benchmarks
Terraform
Open Network Automation Platform
Splunk

Job description

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.

Requirements

  • 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
  • F5 Load Balancing
  • 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.

Desirable Experience:

  • 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.
  • Relevant certifications such as:
  • CCNP / CCIE
  • PCNSE
  • CCSA / CCSE
  • F5-CA, cloud network,network architecture,cisco aci,firewall engineering,vlan,azure arc,cisco asa,dns administration,wide area network,f5 load balancer,virtual private network,switching protocols

About the company

UST is a global digital transformation solutions provider. For more than 20 years, UST has worked side by side with the world's best companies to make a real impact through transformation. Powered by technology, inspired by people and led by purpose, UST partners with their clients from design to operation. With deep domain expertise and a future-proof philosophy, UST embeds innovation and agility into their clients' organizations. With over 30,000 employees in 30 countries, UST builds for boundless impact-touching billions of lives in the process.

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