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

Senior Network Engineer – Cloud, Security & Infrastructure 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: Network & Cloud Infrastructure

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 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 AWS or Azure Networking Speciality CISSP

Hurry & apply! #UST

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