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

Role Description

Senior Network Engineer – Cloud, Security & Infrastructure

Location: London (Hybrid)

Employment Type: Permanent / Fixed-Term Contract

Start Date: ASAP

Build, Secure and Transform Enterprise Networks

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, F5 load balancing, Infoblox DNS/DHCP/IPAM, and cloud networking in AWS, Azure, and/or GCP.
• 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 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.

Skills

• 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

the company is a global digital transformation solutions provider. For more than 20 years, the company 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, the company partners with its clients from design to operation. With deep domain expertise and a future‑proof philosophy, the company embeds innovation and agility into its clients’ organizations. With over 30,000 employees in 30 countries, the company builds for boundless impact—touching billions of lives in the process.