Cyber Security Jobs

• Cambridge

Acts as the go-to authority in a chosen reliability specialism—observability, performance engineering, data infrastructure, security-focused SRE or network reliability—defining standards and best practices across SRE, Platform Engineering and DevSecOps. Builds tooling and automation, leads deep-dive investigations into systemic issues, and contributes to incident response and on-call rotations in a cloud-native, Kubernetes-based environment.

AWS · GCP · Azure +1

• London
• Remote
• £75,000 – £95,000 pa
• Mid-level

Hands-on infrastructure role maintaining the security, availability and resilience of core systems on GCP. You'll design and manage cloud infrastructure with Terraform and Chef, support Linux, MySQL, Apache and PHP environments, run vulnerability assessments and patching, and work with SRE and compliance teams on SOC 2 alignment and CI/CD automation.

GCP · Kubernetes · Docker +7

• Birmingham
• Hybrid
• Mid-level
• Permanent

Champion SRE best practices across engineering, platform and service operations teams, implementing SLOs, SLIs and error budgets for critical services. Build observability through monitoring, logging, tracing and alerting, automate operational tasks, and support incident response and resilience testing. Also involves AIOps adoption and embedding reliability into delivery pipelines.

AIOps

• Dublin, Ireland
• £431 – £604 pd
• Senior
• Contract

Contract role ensuring reliability and operational excellence for Azure platform services under a product operating model. Day to day involves observability, incident response, automation, resilience testing and runbook development for Azure landing zones, ingress/egress DMZs, service integration layers and AI infrastructure supporting Microsoft Foundry and private OpenAI access. Works closely with platform engineering, networking, security and AI infrastructure teams to embed reliability into Azure-native solutions.

Azure · Microsoft Foundry · OpenAI

• United Kingdom
• Remote
• Mid-level

Hands-on SRE role focused on CrowdStrike's Commercial Cloud, covering operational ownership of availability, latency, throughput, monitoring, incident response and capacity planning across thousands of bare metal servers and VMs. Involves building automation and tooling in C++, Java, Python or Go, working with monitoring stacks like Prometheus, Grafana and ELK, and joining a global on-call rotation.

CrowdStrike · ELK · Prometheus +15

• United Kingdom
• On-site
• £750 – £850 pd
• Senior
• Contract

Hands-on engineering role building and securing production-grade Kubernetes clusters on bare-metal and on-premises infrastructure, spanning Linux, networking, storage and compute layers. Involves implementing security hardening, logging and observability pipelines (Fluent Bit, OpenTelemetry, Grafana), SIEM integration and EDR/vulnerability tooling, plus an on-call rota for critical infrastructure.

Kubernetes · Fluent Bit · OpenTelemetry +6

• Stoke-on-Trent
• On-site
• £42,000 – £45,000 pa
• Senior

Hands-on role combining cyber-security and infrastructure engineering, reporting to the Head of IT. You'll monitor and respond to threats, manage identity and access, endpoint protection, patching, backups and disaster recovery, while supporting Microsoft 365, Azure, Windows Server, Active Directory, VMware, networking and firewalls. Fully on-site five days a week in Stoke-on-Trent, with technical guidance to the wider IT team.

Microsoft 365 · Azure · Windows Server +2

• Lifton
• £57,000 pa

Supporting the control systems behind food processing, filling and packaging equipment at the Ambrosia Creamery, diagnosing PLC, HMI, SCADA and industrial network faults and driving continuous improvement projects. The site standard is Siemens, with S5 and S7 PLCs and TIA Portal, and the role also covers commissioning, FAT/SAT, obsolescence planning and OT cyber security.

Siemens S5 · Siemens S7 · TIA Portal +2

• London
• On-site
• Senior

Builds customer-facing web experiences in React alongside product designers and managers, prototyping and iterating for cross-browser and accessibility standards. Improves continuous delivery through test automation and GitLab CI/CD pipelines, and mentors other engineers on refactors and technical debt within an agile team.

React · GitLab

• Portugal - Field
• Senior

Builds customer-facing web experiences in React alongside product designers and managers, prototyping and iterating across devices and browsers to meet accessibility standards. Contributes to test automation and GitLab CI/CD pipelines, and mentors other engineers on refactoring and engineering practices within an agile team.

React · GitLab

• Stoke-on-Trent
• On-site
• £42,000 – £45,000 pa
• Senior

Hands-on role combining cyber-security and infrastructure engineering, reporting to the Head of IT. You'll monitor and respond to threats, manage identity and access, endpoint protection, patching, backups and disaster recovery, while supporting Microsoft 365, Azure, Windows Server, Active Directory, VMware, networking and firewalls. The position is based on site five days a week and includes mentoring the wider IT team.

Microsoft 365 · Azure · Windows Server +2

• Portsmouth
• Hybrid
• Mid-level
• Permanent

Systems engineering role focused on radiation and nuclear hardening for military fixed ground installations, spanning requirements elicitation, mitigation planning, test plans and architecture definition. You will lead customer and test house engagement, working with IS/IT specialists on end-to-end system lifecycles for defence communications equipment. Based on-site in Portsmouth with hybrid and flexible working, on stable long-term MOD, Government and SATCOM projects.

SATCOM

• Birkenhead
• £50,000 – £55,000 pa
• Senior
• Permanent

Hands-on senior role owning a marine energy company's IT infrastructure, covering network architecture, security, Linux and AWS administration, DNS, email systems, monitoring, backup and automation. The administrator maintains and improves office, production, lab and remote-access networks, plus disaster recovery and access control, with full training provided.

AWS · Ubuntu · Linux +7

• London
• Lead

Owns product strategy, roadmap and commercial model for a new publicly trusted certificate authority, spanning ACME issuance, certificate lifecycle automation, revocation and Certificate Transparency. Works across engineering, compliance, legal and go-to-market on high-consequence infrastructure, with an ACME-first, automation-first and post-quantum-ready design.

AWS Certificate Manager · AWS Private CA · Google Trust Services +7

• Harrow
• Hybrid
• Senior
• Permanent

Hands-on architect role at an Elastic partner, designing SOC and SIEM architectures on Elastic/ELK for UK Defence and NATO clients. You own the architecture with the client and stay close to delivery, supporting greenfield builds and recovering existing environments alongside a team of 30+ SMEs, mostly working remotely with occasional client-site visits.

Elastic · ELK · Elasticsearch +4