1 to 25 of 28 Network Security Jobs in the City of London

Role Senior Network Security SME and design authority responsible for network segmentation and Zero Trust initiatives across on-prem and hybrid cloud environments. This role owns architecture decisions, enforcement strategy, and senior customer engagement for a large enterprise environment. Your responsibilities: (Up to 10, Avoid repetition … Network Security Design Authority for segmentation and Zero Trust. Design, implement, and optimize network segmentation using Guardicore and Illumio. Own User-to-Server (U2S) and Server-to-Server (S2S) traffic controls. Lead Guardicore → Illumio transition and future-state architecture. Drive segmentation standards, governance, and operational handover. Serve ...

Reports To: Director of Infrastructure/CIO Role Overview The Head of Networks will own the strategy, design, and delivery of the organisation’s network infrastructure across all European data centres, offices, and customer environments. This pivotal leadership role ensures that all network solutions are secure, scalable, resilient … aligned with business growth. You will lead a team of skilled network engineers, define the enterprise networking roadmap, and collaborate with cross-functional teams — including Security, Infrastructure, and IT Operations — to deliver a high-performance, high-availability network platform that underpins mission-critical business and customer operations. ...

Location: London (Hybrid) Employment Type: Permanent Job Title: Network Engineer This Network Engineer will be responsible for designing, implementing, and managing secure, low-latency, and scalable network infrastructure across both cloud and physical environments and will be a critical hands-on engineering role within a fast-moving … digital asset business. The primary purpose of this role is to act as a backup engineer for the Senior Network Engineer , providing operational support for all aspects of networking when required. Additionally, this role will provide operational support for Platform Engineering , ensuring stability and efficiency across systems. While this ...

Senior Network Engineer (Cisco ISE/Wireless/Palo Alto/Fortigate) Hybrid working: 3 days per week required in the office. DGH Recruitment are currently recruiting on behalf of a leading global professional services firm who are looking for a Senior Network Engineer to join the team … office. The role will be Responsible for maintaining the existing LAN/WAN infrastructure as well as working on projects and Changes to the network infrastructure. Responsibilities: - Design, implement and manage complex network infrastructure using Cisco campus networking 9300 series and Cisco Nexus switches. - Configure and optimise Cisco ...

Network Engineer Rate - £500 (A day) Duration - 6 Months (Initially) Location - SW London IR35 - Outside Role Overview We are looking for a Senior Network Engineer to support a network refresh and transformation programme within a university environment. This role is hands-on and will involve working closely … robust, high-performing wired and wireless services that meet the needs of students, faculty, and staff. Key Responsibilities Support the design and implementation of network infrastructure as part of the Cisco to Extreme Networks migration. Configure and deploy wired and wireless network solutions across campus environments. Work collaboratively ...

Senior Security Analyst/Security Engineer London (City) | £80,000–£90,000 | Permanent If you’re the kind of security engineer who can spot an active threat, contain it calmly, and then harden the environment so it doesn’t happen again — this role is built for you.We … hiring a hands-on Senior Security Analyst/Security Engineer to strengthen a Microsoft-centric security posture across detection, response, tooling, and infrastructure hardening. Not a one-lane SOC role. Not governance-heavy. This role blends incident response with security engineering and hardening and ideal ...

CACI Network Services is a rapidly expanding specialist IT and Networks consultancy offering a wide variety of opportunities to work within challenging and exciting environments with our major clients in Global Media, Banking, Government, Telecoms & Utilities. As a Principal Network Architect , you will be a trusted advisor, technical … authority, and strategic partner to our clients. You will lead the design of complex, secure, and scalable network architectures, translating business requirements into robust technical solutions. This role combines technical leadership, solution architecture, consultancy, and pre-sales engagement, requiring a strong ability to operate at both strategic and hands ...

Network Architect - Fortigate A highly experienced Network Architect is required to join a fast-paced environment, with a strong focus on Fortinet technologies and enterprise firewall operations. The ideal candidate will have hands-on experience across FortiGate, FortiManager, FortiAnalyzer, FortiAP, FortiSwitch, FortiSASE, and FortiConverter, with the ability … design, deploy, and support secure network solutions at scale. This role involves leading firewall migrations, security policy implementation, SD-WAN delivery, and network security improvements across complex multi-vendor environments. Strong experience with enterprise security design, troubleshooting, and documentation is essential, along with a proactive ...

Cloud Security Engineer/GCP Security Expert Contract, 6 months initially (very likely extensions) Inside IR35 Remote (UK) £(Apply online only) per day We're working with a client on an exciting cloud-first transformation and are looking for a GCP Cloud Security Engineer to play … role in securing the migration of workloads into Google Cloud. This is an excellent opportunity to join a forward-thinking environment where security is central to cloud adoption. The Role You will be responsible for designing, implementing, and maintaining security controls across a growing GCP estate, ensuring applications ...

Cloud Security Engineer (GDC/IAM/Encryption) - Contract Rate: £600 day Outside IR35 Location: London - hybrid (2 days onsite) Duration: 12 months Clearance: SC eligible (5+ years UK residency), willingness for DV Overview Join a high-impact programme delivering secure, large-scale cloud infrastructure within a UK government … would be strongly desired) Build and manage IAM architectures (SSO, MFA, privileged access lifecycle) Enforce least privilege via resource hierarchies, policies, and constraints Configure network security controls (firewalls, WAF, service perimeters) Deliver data protection & encryption (KMS, CMEK/EKM, sensitive data handling) Secure CI/CD pipelines with ...

Security Engineer, Data Protection | Quantitative Investment Firm Working with a leading global quantitative investment firm, this role sits at the heart of a highly sophisticated, data-driven environment where security and performance go hand in hand. As a Security Engineer within the Data Protection team … secure critical information assets • Defining and enforcing data handling policies and standards • Identifying gaps in existing controls and driving risk-based improvements • Monitoring security events, leading threat analysis and incident response • Building automation, playbooks and scalable processes to improve security operations • Collaborating with engineering teams to embed security ...

Cyber Security Lead London (City) | Financial FinTech £110,000 + package | Hybrid (WFH/Office blend) Overview You will need to be UK based living within a commutable distance from London We are seeking a Cyber Security Lead/Senior Security Engineer to take ownership … hands-on security of a high-performance trading environment within a regulated FinTech organisation. This is a critical role combining technical security operations with regulatory compliance, ensuring resilience across infrastructure, networks, and systems. Youll work closely with Engineering, DevOps, IT, and Infrastructure teams, playing a key role ...

have a current opportunity for a Head of Azure Platform Security on a permanent basis. The position will be based in London. For further information about this position please apply. ETrading client operates infrastructure that is genuinely critical - trading systems processing billions in daily notional value, client-facing platforms … serving institutional counterparties, and cloud environments holding sensitive market and counterparty data. This role is for a cloud security architect who has never stopped being an engineer: someone who can model a threat, design the control, write the detection rule, and deploy the fix - all in the same day. ...

seeking an experienced Azure Platform Network Engineer to design, implement, and secure Azure networking foundations that enable scalable, isolated, and secure AI workloads. The role focuses on advanced Azure networking, private connectivity, and network isolation patterns to support AI platforms and services. This is a hands-on engineering … role requiring deep expertise in Azure virtual networking, security controls, and private connectivity for enterprise-scale and AI-focused environments. Key Responsibilities Design and implement Azure Virtual Network (VNet) architectures, including hub-and-spoke models , VNet peering, and custom routing using User Defined Routes (UDRs) Configure and manage ...

prestigious UK-based organisation with a rich history spanning over 500 years. This role involves providing deep technical expertise in Microsoft Sentinel, Azure security infrastructure, networking, and security tooling. The successful candidate will play a crucial role in stabilising, improving, and standardising security operations. … role: Design, implement, and support Microsoft Sentinel infrastructure, including workspaces, data connectors, analytics rules, automation, and workbooks. Engineer and maintain Azure security controls across core services, supporting secure cloud operations at enterprise scale. Implement, enhance, and maintain security tooling to improve detection, monitoring, and response capabilities. Design, deliver ...

prestigious UK-based organisation with a rich history spanning over 500 years. This role involves providing deep technical expertise in Microsoft Sentinel, Azure security infrastructure, networking, and security tooling. The successful candidate will play a crucial role in stabilising, improving, and standardising security operations. … role: Design, implement, and support Microsoft Sentinel infrastructure, including workspaces, data connectors, analytics rules, automation, and workbooks. Engineer and maintain Azure security controls across core services, supporting secure cloud operations at enterprise scale. Implement, enhance, and maintain security tooling to improve detection, monitoring, and response capabilities. Design, deliver ...

have a current opportunity for a Head of Azure Platform Security on a permanent basis. The position will be based in London. For further information about this position please apply. Requirements - Hands-on Azure cloud security architecture and implementation - Defender for Cloud, Policy-as-Code, RBAC, PIM, private … endpoints, and secure landing zone design; AWS security experience also considered - Network security engineering: firewall policy design and lifecycle management, micro-segmentation, NSG/UDR/NVA architecture, hub-spoke topology, and perimeter defence for hybrid environments - WAF design, deployment, and operational tuning - Cloudflare, Azure Application Gateway ...

landing zone readiness, cutover planning, and decommissioning. Own core Azure networking design and operations, including vNETs/subnets, routing, peering, private endpoints, NSGs, and network security patterns. Manage hybrid connectivity concepts such as ExpressRoute, vWAN, VPN gateways, and integration with on-prem network services. Partner with network/security teams to implement segmentation and secure access to applications and data. Implement and maintain Azure security and governance controls (Policy/initiative, RBAC, logging/monitoring, and automated compliance guardrails). Maintain working knowledge and provide escalation support of VMware vSphere environment, Windows Servers, Active ...

Skills: Cisco Routing and Switching Router and switches: Cisco NX-OS & IOS-XE, Dell SonicOS Firewall: Fortinet, Juniper, Cisco Project experience preferably in migration Network infrastructure and application flow through firewalled environment Demonstrate an expert understanding of networking protocols including TCP/IP and Ethernet protocols Expert design knowledge … architecture Understanding of IGP & BGP IP Routing Protocol Experience on configuring Cisco NX & IOS-XE platform, DellSonicOS Deep expertise, understanding and knowledge of Infrastructure Network and Security Routing and Switching, Firewalls Strong hands-on experience on Cisco Network Hardware like Cisco NX-OS switches, IOS-XE switches ...

will focus on hands-on support and projects across on-prem and cloud platforms. Responsibilities will include: Designingand deliver enterprise-scale firewall solutions Lead security and network modernisation projects Research and introduce new security technologies Provide Tier 3 support for complex issues Document designs and share knowledge … engineers To be considered suitable you will need the following skills/experience: Strong backgroundwith Palo Alto firewalls (Panorama, NGFW, Prisma Access) Strong enterprise network experience Palo Altocertification - PCNSE Good understanding of network security ...

months initially, view to extend Location: London 1 day per week, 4 days remote (open to remote) Overview We are looking for a senior Network Architect for an engagement with a major financial services client. You will be an expert-level practitioner who is equally comfortable working at depth … technically and presenting findings to senior executives. Both skills are essential for this engagement. What the Role Involves Assess and document the current network estate across LAN, WAN, and Data Centre environments Identify fragmentation, technical debt, and architectural risk within the existing environment Produce a current state assessment ...

ideal candidate will have a strong technical foundation, excellent communication skills, and a willingness to learn and grow within a dynamic environment. Key Responsibilities Network Administration Configure, install, and maintain network hardware, including laptops, printers, and related equipment Support implementation of network security access controls ...

Skills: Cisco Routing and Switching Router and switches: Cisco NX-OS & IOS-XE, Dell SonicOS Firewall: Fortinet, Juniper, Cisco Project experience preferably in migration Network infrastructure and application flow through firewalled environment Demonstrate an expert understanding of networking protocols including TCP/IP and Ethernet protocols Expert design knowledge ...

days per week required in the office in London. Overview The role will focus on designing, implementing, and evolving identity, access, and infrastructure security capabilities across hybrid environments. Key Responsibilities - Monitor and evaluate emerging IAM trends (e.g., passwordless authentication, decentralised identity, adaptive access controls). - Lead automation and governance … Kerberos, LDAP). - Embed Zero Trust and least-privilege principles across systems and applications. - Own global firewall architecture and contribute to micro-segmentation and network security strategy. - Enhance privileged access management (PAM), including workflow and monitoring capabilities. - Ensure audit readiness and contribute to compliance frameworks (e.g., ISO standards ...

solutions backed up by unrivaled technical support which enables them to manage and transfer valuable and critical content quickly, securely and effectively. Our media network is the largest and most established private, high-performance network for the media industry connecting the leading studios, production and post-production facilities … that produce commercials. Schedule and complete at least nine meetings (Zoom or face-to-face) per week with customers and prospects. Attend industry events, network and be immersed in the media and entertainment scene with the objective of building sustainable relationships that will lead to business opportunities and closed ...