Senior Network Security Engineer

Role 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 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 10+ years' experience in Network Engineering, Cloud Networking, and Network Security.Strong expertise across:Cisco Networking & Routing/SwitchingPalo Alto, Check Point, Cisco ASA, and ForeScoutF5 Load BalancingInfoblox DNS/DHCP/IPAMAWS, Azure, and/or GCP NetworkingHands-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 / CCIEPCNSECCSA / CCSEF5-CAAWS or Azure Networking SpecialityCISSP Hurry & apply! #UST 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.