1 to 25 of 46 Network Security Jobs in the City of London

Job Title: Network Security Engineer Location: Seattle, WA Job Description: We are looking for a skilled Network Security Engineer with expertise in Cisco technologies to join our team in Seattle, WA. As a Network Security Engineer, you will be responsible for designing, implementing, and maintaining secure network infrastructures to protect our organization's … data and systems from cyber threats. Key Responsibilities: - Design, implement, and maintain network security measures to protect organization's data and systems - Monitor network traffic for potential security breaches and respond appropriately to incidents - Conduct regular security audits and vulnerability assessments to identify and address security risks - Collaborate with cross-functional teams to implement … security policies and procedures - Provide technical support and guidance to IT staff on network security best practices - Stay up-to-date on latest security trends and technologies to continuously improve network security measures Qualifications: - Bachelor's degree in Computer Science, Engineering, or related field - 3+ years of experience in network security engineering More ❯

Security Analyst (Network & Support) Location - London (Hybrid) Duration - 6 Months (Initially) Rate - £450 (A day) IR35 - Outside IR35 Summary To be part of Digital Services, actively contributing as a member of the Infrastructure and Operations Team to support and develop the Network Infrastructure, Services, and Security. Provide 3rd line support for all wired, Wi-Fi, and remote … access network services to staff, students, contractors, and visitors. Act as a key point of reference in network security, contributing to the implementation, development, provisioning, and operational support of network dependencies. The post holder will be expected to support the designing, implementation, and maintenance of our client's Network Security Infrastructure to protect against … cyber threats. Accountabilities and Responsibilities Security Operations Support Serve as a reference point for network security across IT teams, providing guidance and specialised expertise on security measures. Conduct vulnerability assessments, security audits, and continuous monitoring of network traffic for anomalies using advanced security tools. Collaborate with IT teams to ensure security measures More ❯

Security Engineer Remote 6 months - with extensions Inside IR35 - Umbrella only Role description/skills required Proactively use security engineering tools to identify and mitigate network & security risks. Develop and implement security measures using specialised tools based on Cyber security best practices. Support and build network segmentation capabilities, including deciding on the granularities … of segmentation from a threat-led perspective (e.g., application level, environment level, network level, network policies, mapping attack paths, and building mitigations). Hands-on exposure and knowledge of Cyber & network security, e.g. management of firewalls, IDS, Web Gateways etc. Familiarity with deploying Infrastructure as Code and using CI/CD technologies, such as Azure DevOps. … Hands-on experience working with cloud networking with a focus on security. For example, working with virtual networks, network security groups, virtual firewalling, Web Application Firewalls, and cloud networking security monitoring. Previous experience working with security best practices - e.g. Zero trust, defence in depth, least privilege, security hardening. Experience in applying zero-trust principles to More ❯

Your new role - Permanent - ON SITE 5 Days per week. You will be required to obtain security clearance and undergo vigorous onboarding checks - UK Only. Sponsorship NOT available. The main purpose of this job mainly focusses on information security, cybersecurity, and data security, including a wide scope, such as physical security of computer rooms, operating system … level security of Windows and Linux, network security of firewall and other security devices, application security both development and testing phrases, terminal security, backup security, third party and supply chain security of IT service provider. Liaison with the Head Office, Security Operation Centre or Data Centre for implementing security policies … projects and security controls. Work with Internal Audit and other departments to execute penetration tests, cybersecurity risk self-assessment, ensure best practice and international baseline standards are in place and in line with local regulations. The ideal candidate will be responsible for managing information security systems, ensuring compliance with regulatory requirements, and conducting thorough security audits. You More ❯

Senior Platform Engineer (Network & Security) Central London, Hybrid (2-3 days) | £70,000-£80,000 + excellent benefits About the company We’re proud to be partnering with a leading international bank, renowned for its commitment to digital transformation, sustainability, and innovation. With operations spanning multiple continents, they’re investing heavily in modernising their technology landscape; driving automation … the heart of this transformation, helping to build secure, scalable platforms that power global banking operations. About the role As the Senior Platform Engineer, you’ll take ownership of network infrastructure design, automation, and security and work with both internal teams and third party partners to drive enterprise-level transformations. You’ll work across cloud and on-prem … environments, utilising a range of cloud, network, and security technologies, developing Infrastructure as Code (IaC), and embedding security controls to deliver seamless, secure platform connectivity. About you An experienced Network & Security Engineer with at least 5+ years of relevant experience in designing, implementing, and securing enterprise-grade network platforms. You’ll bring strong technical More ❯

Job Title: Information Security Architect Location: London Hybrid Working: 50% Remote/50% Office Leading Financial Services/FinTech are seeking a highly technical and broad Information Security Architect to join their security architecture team. This is a key position responsible for ensuring that the design, delivery, and operation of systems and services meet the highest security architecture and compliance standards. Information Security Architect will provide architectural leadership across multiple security domains — combining deep hands-on technical security expertise with strategic enterprise security architecture thinking. You will play a critical role in embedding security throughout the technology landscape, from solution-level security reviews to security solutions and enterprise-wide … security architecture standards. This role requires a balance of security solution architecture, technical review and assurance, and enterprise security architecture skills. You will define and validate security controls, assess new technologies, perform security design reviews, and ensure security-by-design principles are consistently applied across hybrid, on-premise, and cloud environments. Key Responsibilities Serve More ❯

IT Security Engineer Feltham (Hybrid) £50,000 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 hardening improvements. Vulnerability & Risk More ❯

Position: Senior Network & Security Specialist Salary: 80k GBP base Industry: Global Insurer Hybrid: 1 day per week in the office Location: Guildford, Surrey If you're a seasoned IT Infrastructure Engineer with extensive Network Security experience, this role is for you. Our client are one of the largest financial services companies in the world, so having … no chance you'll be getting bored anytime soon. Experience: One or more of CISA, CISSP or CRISC Good working knowledge of NIST and COBIT frameworks Data centre/network and workplace architectures Security tooling, risk analysis, or governance roles TCP/IP, HTTP/S, SMTP), proxy servers, email gateways, firewalls, and routing devices. ISO 27001, NIST More ❯

Position: Network Security Specialist Salary: 80k GBP base Industry: Global Insurer Hybrid: 1-2 days per week in the office Location: Guildford, Surrey If you're a seasoned IT Infrastructure Engineer with extensive Network Security experience, this role is for you. Our client are one of the largest financial services companies in the world, so having … broad role, so there's no chance you'll be getting bored anytime soon. They need you to have experience across Infrastructure, from networking (TCP/IP, HTTP, SMTP), security, risk, governance, automation, identity & access management...not to mention financial services experience, and ideally insurance. If you're still reading, then great, the wish-list hasn't scared you off More ❯

Company Overview iboss is a cloud security company that enables the modern workforce to connect securely and directly to all applications from wherever they work. Built on a containerized cloud architecture, iboss delivers security capabilities such as SWG, malware defense, RBI, CASB and data loss prevention to all connections via the cloud, instantaneously and at scale. This eliminates … the need for traditional network security appliances, such as VPNs, firewalls and web gateway proxies, which are ineffective at protecting a cloud-first and mobile world. Leveraging a purpose-built cloud architecture backed by 230+ issued and pending patents and more than 100 points of presence globally, iboss processes over 150 billion transactions daily, blocking 4 billion threats … www.iboss.com/. Job Description The Account Executive will take ownership of an assigned territory and drive revenue through new customer acquisition by mastering iboss messaging and portfolio of network security services. Their strategy will focus on net new logo and upsell opportunities that build and promote strong, long-lasting customer relationships by partnering with them and understanding More ❯

We are seeking an experienced Head of Custody Security to lead our efforts in ensuring robust security for digital asset custody and blockchain infrastructure. This role will focus on designing and implementing security controls, supporting client assurance, and ensuring compliance with regulatory standards. The ideal candidate is a strategic thinker with deep expertise in security assurance … audit, and cloud security, and a passion for advancing Web3 and blockchain technologies. Key Responsibilities Design, conduct, and implement testing of security controls for identity management, key management, and infrastructure (network and cloud) configurations. Support client assurance by preparing responses to Requests for Proposals (RFPs), Requests for Information (RFIs), and Due Diligence Questionnaires (DDQs). Analyze trends … in client inquiries and provide actionable feedback to internal teams to enhance documentation and control readiness. Perform security due diligence and ongoing monitoring of Web3/blockchain vendors, including assessing control maturity, reviewing SOC reports, and identifying residual risks. Facilitate external audit activities, coordinating walkthroughs, evidence collection, and response tracking. Identify and analyze gaps in current and new processes More ❯

Cyber Security Analyst - Incident Response London - Hybrid | Up to £65,000 + benefits A global specialist insurer is building out its internal cyber defence capability and is seeking an experienced analyst to strengthen its Security Operations Centre. You'll join a collaborative team focused on both proactive threat hunting and live incident response, protecting a complex international estate. … This position suits someone who has started their career in a SOC environment and now works primarily in incident and threat response. The role Lead investigations into live security incidents including malware, phishing, and endpoint compromise Perform root cause analysis, containment, and recovery actions Tune detection rules and develop new use cases to improve response times Utilise Microsoft Defender … Sentinel, and Azure Security tools to detect and respond to threats Conduct post-incident reviews and recommend long-term prevention strategies Collaborate with infrastructure and security teams to harden systems and processes Experience required Minimum 2 years in a SOC environment followed by recent hands-on incident response experience Strong working knowledge of SIEM and EDR tools (Sentinel More ❯

AWS Security Architect Initial 6-month Contract Role Hybrid working, twice a month in London £450 - £500, Inside IR35 We're partnering with a Global IT Provider who are seeking an AWS Security Architect to design and deliver secure AWS solutions for large-scale data centre exit and migration projects. As an AWS Security Architect, you will … responsible for: Design secure AWS landing zones using IAM, KMS, GuardDuty, and WAF. Conduct risk assessments and ensure compliance with ISO 27001, GDPR, and PCI-DSS. Embed and validate security controls throughout migrations. Architect IAM policies and implement Zero Trust principles. Automate security in CI/CD pipelines with AWS Config and IaC tools. Manage monitoring, logging, and … incident response. Advise stakeholders on security risks and mitigation. Responsibilities: Previous experience in security architecture, including 5+ years in AWS cloud security, Deep AWS security expertise and large-scale migration experience Strong background in network security, VPC architecture, and hybrid connectivity AWS Security Certifications are desirable Knowledge of security automation and IaC More ❯

Role: AWS Security Architect – DC Exit and Security Architect Rate: £450 p/day Inside IR35 Location: Hybrid | 2 – 3 times a month from London Office Type: Contract - 6 Month Contract Start: ASAP Our client is looking for an immediate joiner for an AWS Security Architect – DC Exit and Security Architect role. Key Responsibilities: Architect IAM … policies and implement zero-trust principles. Design secure AWS landing zones and integrate native security services (IAM, KMS, GuardDuty, WAF). Establish monitoring, logging, and incident response playbooks. Ensure regulatory compliance (ISO 27001, GDPR, PCI-DSS) and perform risk assessments. Automate security controls in CI/CD pipelines; enforce compliance via AWS Config and IaC. Embed security in migration lifecycle; validate posture pre/post migration. Advise stakeholders on security risks and mitigation strategies. Experience: 8+ years in security architecture, 3+ years in AWS cloud security. Strong knowledge of network security, VPC design, and hybrid connectivity. Deep AWS security expertise and large-scale migration experience. AWS Security Specialty certification; CISSP More ❯

Job Title: Network Firewall Specialist – Checkpoint & Fortinet Overview: My client are looking for an experienced Network Firewall Engineer for an initial 6 month contract. The role is INSIDE of IR35 and paying £530P/D. This contract is initial 6 Month Contract The client are looking for a candidate with strong Checkpoint and Fortinet technologies to support and … foundation in telecommunications and hands-on experience in managing, maintaining, and troubleshooting complex firewall environments. The successful candidate will play a key role in ensuring the performance, reliability, and security of network systems. Key Responsibilities: Administer, configure, and maintain Checkpoint and Fortinet firewalls within a telecom setting. Execute regular patching and upgrades to align with security best … practices and compliance standards. Diagnose and resolve network security issues with a focus on minimizing service disruptions. Analyze firewall logs and alerts to detect vulnerabilities and mitigate potential threats. Design and enforce firewall rules, VPNs, access controls, and other security policies. Collaborate with Network Operations (NOC), Security Operations (SOC), and IT teams to resolve incidents More ❯

Senior Cloud Security Consultant Up to £85,000 + Bonus + Benefits + Training Hybrid (London, UK) Company & Role This is an opportunity to join a people first, values led $1B global technology services provider that delivers end to end IT outsourcing and cyber defence services to clients across the UK and internationally. Its Security Advisory team sits … at the core of the organisation’s Cyber Defence practice, helping clients build secure, compliant and resilient cloud environments. Working across Azure and AWS, the team designs cloud security architectures, performs risk assessments and drives secure cloud transformation for enterprise and public sector customers. As a Senior Cloud Security Consultant , you will act as a trusted advisor to … clients, helping them assess, strengthen and optimise their cloud security posture. You will lead cloud security reviews, design secure architectures and advise on governance, compliance and risk, ensuring that cloud adoption and innovation happen safely and strategically. You will also collaborate with internal SOC, Engineering and Governance teams to ensure alignment between architecture, detection and operations. Why This More ❯

AWS Security Architect – Major Migration Program 🔒 💰 Rate: Up to £450 GBP per day Inside IR35, across an initial 6 months contract engagement. 📍 Location: Hybrid 💻 Office Time: Only 2-3 days per month required in our clients City of London office. 🛡️ Clearance: None Required AWS Security Architect We need an AWS Security Architect expert to lead the security … focusing on compliance, resilience, and securing large-scale transformation for a client in a regulated environment. Key Responsibilities: Design & Implement: Secure AWS Landing Zones from the ground up. Native Security: Integrate and manage core AWS services (e.g., IAM, KMS, GuardDuty, WAF). Compliance: Enforce regulatory standards (GDPR, ISO 27001, PCI-DSS). Automation: Embed security via IaC (Terraform … IAM policies and implement Zero-Trust principles. Risk: Perform risk assessments and advise senior stakeholders on mitigation. Monitoring: Establish logging and incident response playbooks. Your Essential Experience: Expert AWS Security: Deep expertise and experience in large-scale migration. VPC & Network: Strong knowledge of network security and hybrid VPC design. Experience: 8+ years in Security Architecture More ❯

IT Security Engineer- £70K Our client is a leading London professional services and law firm, they work with client in technology, financial services, pharma and ecommerce around the world. Offer great remote/hybrid flexible working, they’re looking for an experienced InfoSec/Cyber Security Engineer to join them. You’ll work directly with the CSO and … SOC team to create and deliver the security strategy, information security framework and risk mitigation activity for the company. You’ll have the chance to be involved in everything from security assessments and threat modelling to triage of security events, ownership of policies and procedures and even working with development and engineering teams to drive application … security. Requirements: Proven experience as an Information/Cyber Security Engineer Extensive and broad cyber and information security (InfoSec) experience Knowledge of concepts such as ethical hacking, network security, penetration testing and cryptography etc Good understanding of Windows, Cloud and IT infrastructure Excellent communication skills More ❯

A leading consultancy is seeking a Network Support Technician, starting ASAP paying between £28-30K. This position would require you to undergo SC Clearance and will require 5 days a week On-Site work in London. The Network Support Technician will provide on-site technical assistance and support for network infrastructure. This role involves troubleshooting, equipment … handling, and performing basic network tasks under the guidance of remote engineering teams. The ideal candidate will have a strong understanding of networking principles and excellent communication skills. If you are offered this position, you will go through a series of pre-employment checks, including: identity, nationality (single or dual) or immigration status, employment history dating back 3 continuous … years, and unspent criminal record check (known as Disclosure and Barring Service) Your Role Respond to requests for on-site support and assistance with network equipment and infrastructure. Perform equipment installations, configurations, and decommissions as directed. Assist with troubleshooting hardware and connectivity issues. Execute standard network tasks, such as cable management, patching, and rack management. Document actions taken More ❯

Prisma Access . Key Responsibilities: Lead end-to-end delivery of Secure Service Edge/Prisma Access projects. Manage project timelines, budgets, and stakeholder communications. Coordinate with technical and security teams to ensure successful implementation. Track project milestones and ensure compliance with internal governance processes. Requirements: Proven experience as a Project Manager delivering Secure Service Edge or network security implementations. Hands-on knowledge of Prisma Access (or equivalent SSE solutions). Strong stakeholder management and communication skills. Based in or able to work from London on a hybrid basis. Contract: 6 months | Location: London | Start: ASAP More ❯

I'm currently looking for an experienced Senior Network/Network Services Manager to join a global organisation on a 4-6 month contract, supporting a major SD-WAN and network modernisation initiative.Needing someone who thrives in a fast-paced environment and has led complex network transformation projects.What you'll do: Own day-to-day network operations (LAN/WAN/SD-WAN, firewall, wireless). Lead and mentor the network team, providing guidance during major incidents. Drive the SD-WAN migration and LAN modernisation project, ensuring operational readiness. Manage vendors and third-party MSPs, holding them to SLAs and performance requirements. Oversee patching, upgrades, and ensure best practice network security standards. … Work closely with IT leadership to prioritise technical debt and shape future network strategy.What we're looking for: Strong background in global enterprise networking - WAN/LAN, MPLS, VPN, QoS. Demonstrable experience leading SD-WAN rollout/migration projects (HPE SD-WAN exposure desirable). Expertise across Cisco switching/routing (Nexus 3K/9K, BGP/OSPF/ More ❯

Information Security Manager - £80K - £100K Our client is a leading software as a service (SaaS) firm growing within insurance FinTech. Baded in central London, offering good hybrid/flexible working, they’re looking for an Information Security professional to lead their InfoSec function. You’ll work directly with the C Suite to create and deliver the security strategy, information security framework and risk mitigation activities for the company. You’ll have the chance to be involved in everything from security assessments and threat modelling to penetration testing, coding, triage of security events, ownership of policies and procedures and even working with development and engineering teams to drive application security and DevSecOps - A … very varied role! Requirements: Proven experience as an Information/Cyber Security Manager Experience being the "go to" for InfoSec Extensive and broad cyber and information security (InfoSec) experience Knowledge of concepts such as ethical hacking, network security, application securty, penetration testing and cryptography etc Strong IAM and Risk understanding Good Cloud and DevSecOps knowledge Excellent More ❯

operational excellence. Be part of a growing, people first organisation where your career will be developed by working alongside experienced technology professionals supporting mission critical government services. London Hybrid Security Cleared The Role We are seeking a Cloud Platform Network Engineer with expertise in Microsoft Azure to design, implement, and manage secure cloud-based network infrastructure. In … role, you will ensure scalable and reliable connectivity across hybrid environments, enabling cloud services that underpin UK Government and enterprise operations. You will work closely with architects, developers, and security teams to align network designs with business and compliance needs. In this role, you will: Design and implement Azure networking solutions including VNets, VPN Gateways, NSGs, Azure Firewall … and hybrid connectivity solutions. Monitor and optimise performance across hybrid and multi-site environments. Troubleshoot connectivity issues and resolve incidents quickly. Implement observability using Azure Monitor, Log Analytics, and Network Watcher. Automate provisioning and configuration using Terraform, Azure CLI, and PowerShell. Contribute to CI/CD integration for infrastructure as code. Ensure compliance with ISO27001 standards and Zero Trust More ❯

Security Operations Lead - Fintech - Trading Hybrid Working - 3 days in London office The Role As SecOps Lead , you will act as the main liaison between internal security, engineering, and IT teams, and an external Managed Detection and Response (MDR) partner. You’ll oversee incident management, enhance detection and response processes, and strengthen the company’s overall security … posture. Key Responsibilities Serve as the primary contact for the MDR partner, managing the relationship, conducting service reviews, and ensuring SLAs are consistently met. Lead incident response efforts during security events — coordinating across teams to achieve fast containment and recovery. Review and fine-tune security alerts with the MDR provider, reducing false positives and improving detection accuracy. Develop … and monitor MDR performance metrics (KPIs) , presenting insights and trends to senior leadership. Maintain and evolve the security incident response plan (IRP) and playbooks in collaboration with the MDR provider. Translate technical security risks into actionable business recommendations for stakeholders at all levels. Contribute to broader cybersecurity initiatives , including vulnerability management, cloud security, data protection, and governance More ❯

Radius is seeking a Head of Networks to lead the strategy, design and implementation of both internal and customer Network infrastructures. The role ensures delivery of secure, resilient, and scalable network services that meet evolving business and security standards while delivering related products and services across EMEA. Oversee design, implementation and continuous improvement of Network architecture … driving innovation and scandalisation across the company. Act of my clients senior authority on network strategy, policy, and technical governance. Own network projects, including procurement, budgeting and security assessments Build manage and mentor a high performing network function Deep understanding of Juniper and Cisco networks. Deep understanding of Windows server, TCP/IP, routing, SANS, Active … directory, firewalls and system monitoring proven experience designing and managing resilient secure and high availability network environments supporting internal and customer services strong grasp of network security best practices and technologies including firewalls, segmentation, intrusion detection/prevention and encryption. More ❯