Cyber Security Jobs in London

RiverSafe · London

Client-facing consulting role leading end-to-end security engagements across security architecture, cloud security, DevSecOps, application security and security operations. You'll run workshops, design controls in AWS/Azure/GCP, produce risk-based deliverables and help identify follow-on work, contributing to proposals and account growth.

Appvia · London · £75,000 – £90,000 pa

Design, build and operate secure AWS platforms using Terraform, Kubernetes/EKS and CI/CD for public and private sector clients. You will own technical delivery in your area, create reusable modules and deployment patterns, and mentor less experienced engineers within multi-disciplinary consulting teams.

83zero · London · £110,000 – £125,000 pa

Lead DevSecOps adoption across complex technology transformation programmes, combining hands-on engineering with technical leadership. Build secure CI/CD and GitOps pipelines, embed security scanning and secrets management, and drive IaC, observability and compliance practices. Requires UK GDS public sector experience and SC clearance eligibility.

Circle Recruitment · London · £30,000 – £45,000 pa

Hands-on security operations role monitoring and triaging alerts from SIEM, EDR and cloud platforms, investigating incidents and supporting containment and response. Also provides second-line support across Azure, AWS, identity, network and end-user infrastructure, with log analysis, vulnerability remediation and runbook upkeep. Majority onsite in Manchester or London, with occasional on-call and shift handovers.

CrowdStrike · London

Builds and maintains a high-performance, fault-tolerant production backbone network across multiple cloud providers, spanning IP and optical/DWDM technologies connecting data centers and edge sites. Owns improvement initiatives end to end, drives capacity planning and network automation with Python, Ansible and CI/CD pipelines, and participates in a 24x7 on-call rotation.

CrowdStrike · London

Designs, implements and operates a global multi-vendor, multi-cloud and hybrid data center network, covering subnetting, VPC peering, direct connects and hub-spoke topologies. Builds IaC and automation tooling (Ansible, Terraform, Python, Go) in CI/CD pipelines and handles complex production troubleshooting plus on-call rotations.

Genomics England · London · £89,000 pa

Architect secure, resilient network connectivity spanning AWS cloud platforms and on-premise infrastructure, supporting clinicians and researchers accessing sensitive genomic data. The role balances long-term network strategy with practical delivery, defining target architectures, standards and reusable patterns across cloud, hybrid, remote-access and partner connectivity. Involves designing AWS networking, hybrid multi-site connectivity, zero-trust security, and providing architectural governance through delivery.

MJA (London) Ltd · London

Lead and develop the organisation's cyber security strategy, owning the information security framework including ISO 27001 and Cyber Essentials Plus. Reporting to the CIO, you will run security operations, manage an outsourced SOC, oversee incident response and vulnerability management, and mentor the security team. Legal-sector experience is mandatory, and the role spans Microsoft/Azure cloud security and SaaS assurance.

Fawkes & Reece London · London · £50,000 – £55,000 pa

Owns information security policies, risk management, data protection and business continuity within a global Group IT function, working alongside senior security managers. Hands-on role embedding security into business processes, maintaining ISO 27001 documentation, running audits and DPIAs, and supporting incident response and awareness training.

Randstad Technologies Recruitment · London · £450 – £460 pd

Act as the bridge between technical security architecture and senior business stakeholders, owning the cyber risk profile for critical Risk, Finance and Treasury domains. Embed security-by-design controls, oversee vendor and SaaS risk, lead control assessments and audits, and provide risk-based direction during major incidents. Hybrid role with three days on-site in London.

ITSS Recruitment · London · £60,000 – £70,000 pa

Hands-on security engineering role protecting critical systems and sensitive data across a broad estate covering cloud security, vulnerability management, incident response and security monitoring. Day to day involves operating the vulnerability management programme, administering Microsoft Defender, Purview, Entra ID, Sentinel and Azure security services, and advising infrastructure, application and business stakeholders on risk-based controls.

Experis · London · £450 – £455 pd

Hands-on SOC and incident response role monitoring, triaging and investigating cyber security threats across macOS endpoints, Linux cloud workloads, microservices and containerised platforms. You will contain and remediate incidents, document findings and evidence, and contribute to detection rules and response playbooks while working closely with security and engineering teams.

Endeavour Recruitment · London · £115,000 – £125,000 pa

Own the information and cyber security agenda for an international organisation, defining strategy, policies and technical baselines across networks, cloud, identity and endpoints. A senior individual-contributor role without line management, working with infrastructure, technology and external providers to drive vulnerability management, monitoring, incident response and security architecture. Requires hands-on technical depth plus the ability to influence senior stakeholders.

VIQU IT · Portsoken · £350 – £400 pd

Day-to-day BAU security operations role focused on Rapid7, SIEM monitoring, alert triage and vulnerability management, including clearing an existing alert backlog. Also covers Mimecast email security, Microsoft Purview eDiscovery/DSAR/DLP, CrowdStrike and Netskope administration, plus security investigations and documentation.

Copello · London · £70 – £85 pd

Lead cloud security assurance from initial assessment through to approval, assessing services against NCSC Cloud Security Principles and MOD standards. Oversee compliance, audits and third-party access while advising project teams on secure configuration and risk mitigation. Supports Defence Cyber Certification, ISO 27001 and MOD security audits, presenting findings to senior governance stakeholders.

GCS · London · £600 – £700 pd

Lead a risk-based technical assurance programme across a global enterprise, independently assessing security control effectiveness in infrastructure, cloud, identity, applications and incident response. Manage and mentor a small team of Technical Assurance Analysts while producing board-level reporting and driving continuous controls monitoring and automated assurance.

Deerfoot Recruitment Solutions · London · £500 – £550 pd

Hands-on contract role managing a broad estate of security tooling across network, email, endpoint and web, plus red team platforms for forensics, threat monitoring and deception. Day to day involves patching, upgrades, policy tuning, troubleshooting, and deploying and integrating new tools, including vendor replacements such as a new web proxy and email gateway. Works within an IT Security team at a financial services organisation, supporting audit and risk activity alongside engineering projects.