7 of 7 Network Security Engineer Jobs in London

Senior Network Security Engineer Location: Fully Remote Rate: Up to £450 per day (Inside IR35) Duration: 6 Months About the Role We are seeking an experienced Senior Network Security Engineer to join on a 6-month contract. This is a fully remote role, offering an opportunity to work on high-impact security projects … and infrastructure initiatives. You’ll be responsible for strengthening the security posture, managing critical systems, and mitigating risks across cloud and network environments. Key Responsibilities Manage, configure, and troubleshoot Palo Alto firewalls to ensure optimal security. Implement and maintain Azure security controls , including identity, networking, and monitoring solutions. Configure and manage Web Application Firewalls (WAFs) to protect … against application-layer attacks. Conduct security audits , review findings, and produce comprehensive reports. Proactively mitigate vulnerabilities identified in security reports and assessments. Collaborate with cross-functional teams to ensure security best practices are followed. Stay up to date with emerging threats, vulnerabilities, and industry trends. Skills & Experience Required Proven experience as a Network & Security Engineer More ❯

Senior Network Security Engineer - WAF 6 months contract Up to £500 per day (Inside IR35) Fully Remote We’re looking for a Senior Network Security Engineer with strong WAF and cloud security experience to join on a 6-month contract. You will take ownership of our web application security posture, drive improvements … across our network security stack, and support key projects focused on cloud, firewall, and WAF optimisation. Key Responsibilities Lead the configuration, tuning, and optimisation of Barracuda WAF platforms Support and enhance Azure networking components including VNets, NSGs, firewalls, load balancers, and routing Work with next-generation firewalls (any major vendor) to improve security controls Monitor, investigate, and … respond to security incidents across WAF, firewalls, and cloud networking Implement and maintain secure network design patterns and best practices Collaborate with architecture, cloud, and application teams to ensure secure service delivery Produce documentation, runbooks, and provide knowledge transfer where required Essential Skills & Experience Strong hands-on experience with WAF technologies, ideally Barracuda WAF Solid understanding of Azure More ❯

IT Security Engineer Feltham (Hybrid) £45,000 - £55,000 Base + Benefits Overview The IT Security Engineer is responsible for designing, implementing, and maintaining the security controls that protect the organization’s systems, networks, and data. This role works closely with IT, DevOps, and business teams to ensure that security is embedded throughout technology … operations and architecture. The IT Security Engineer is key to detecting, preventing, and responding to cybersecurity threats in a proactive and efficient manner. Key Responsibilities: Security Architecture & Implementation Design, deploy, and manage security solutions including firewalls, intrusion detection/prevention systems, endpoint protection, SIEM, and identity management platforms. Implement secure network architecture and enforce segmentation … and least-privilege access controls. Support secure cloud environments across Azure, AWS, or GCP (e.g., IAM, security groups, encryption, KMS). Threat Detection & Incident Response Monitor and analyze security alerts and network traffic for threats or suspicious activity. Lead or support incident response activities: investigation, containment, eradication, recovery, and reporting. Conduct root cause analysis and implement security More ❯

Overview Are you an experienced L3 Network Security Engineer looking for your next contract role? Join one of the world's leading IT services, consulting, and business solutions organization. Founded in 1968, the company consistently ranks among the top global IT service providers. With a presence in over 50 countries, the company has built a reputation for … world's largest airline groups with 600+ aircraft carrying more than 122 million customers to 260 destinations across 91 countries each year. They are currently seeking an experienced L3 Network Security Engineer to join the team on a 6-month contract based in West London. Ready to make a move? Get in touch and apply today! Key … networking issues. Configure and manage wireless infrastructure, ensuring optimal performance and security. Assist in the deployment and maintenance of F5 load balancers. Collaborate with cross-functional teams to support network upgrades, migrations, and performance tuning. Required Skills Expert-level experience with Juniper routing and switching platforms (eg, MX, EX, SRX). Strong understanding of wireless networking (802.11 standards, WLAN More ❯

Overview A fast-growing hedge fund is building its technology stack from the ground up and seeking a Cloud Network & Security Engineer to take ownership of its cloud networking and security infrastructure. As a Cloud-First, Multi-Cloud company leveraging AWS & Azure, they need an expert to design, secure, and optimize their cloud network architecture. … This is a unique opportunity to build and define the network for a cloud-first hedge fund. If you're a driven Network Engineer looking to make a real impact, apply now! Key Responsibilities This is a blend of design, implementation, and support, giving you the chance to shape and build the network from scratch. You … ll be responsible for: Designing and delivering cloud-based and on-prem network and security solutions Working with Palo Alto Networks (essential), Cisco, or Arista Supporting a multi-cloud (AWS & Azure) and on-prem data center environment Collaborating with the Senior Technology stake-holders to define and implement best practices Helping build low-latency and high-performance networking More ❯

Network and Security Engineer - Palo Alto/Juniper routing Outside IR35 Contract role Hybrid 3-4 visits per month/roughly 1 visit per week - Moorgate nearest tube Must be a UK Citizen (due to role requirements) Outside IR35 contract opportunity for a Network and Security Engineer . This role will focus on implementing … documentation with site-specific configuration details. Review service requests and raise change requests where required. Implement and test firewall policies using Panorama. Troubleshoot connectivity issues across networks, applications, and security devices. Collaborate with security and infrastructure teams to ensure compliance with policies and standards. Configure access policies in PAM systems. What you'll bring: Proven experience with Palo More ❯

Network Engineer Bromley, Kent Up to £50,000 per annum Full time, permanent Are you ready to take ownership of a critical network environment and help shape the future of IT infrastructure in a collaborative, forward-thinking team? We’re looking for a Network Engineer who thrives on solving complex challenges, enjoys working across infrastructure … and security domains, and is excited to contribute to a high-performing, close-knit team. This is more than just a technical role — it’s an opportunity to bring your ideas to life, influence how we evolve our network, and play a key part in delivering secure, resilient, and scalable solutions that support the entire business. What you … ll do Manage and optimise network infrastructure, including virtual networks, cloud infrastructure, and WAN technologies. Configure and maintain firewalls, routers, load balancers, and switches. Deploy security and operational updates in line with business guidelines. Monitor network performance and resolve bottlenecks. Collaborate with infrastructure and security engineers to align on requirements. Support and educate helpdesk staff on More ❯