Cyber Security Jobs

• Ireland
• Remote
• Senior · manages people

Lead a team of data scientists working at the intersection of machine learning, large language models and cybersecurity, translating business needs into technical objectives and driving research into production ML systems. The role spans mentoring, roadmap planning and hands-on work on malware detection and behavioural threat analysis across trillions of daily events.

AWS · Linux

• United Kingdom
• Remote
• Senior

Senior technical consultant conducting front-page incident response investigations for Fortune 100 clients, performing host and network forensics across Windows, Mac and Linux, hunting threat actors in large data sets, and producing written and verbal findings for customers, regulators and legal counsel.

CrowdStrike · Bro/Zeek · Suricata +6

• Lisbon, Portugal
• Hybrid · 3 days in office
• Senior
• Permanent

Builds and operates production ML systems for document extraction powering identity verification, working with VLMs/LLMs and traditional ML at scale. Owns technical design from RFC to deployment, optimising GPU inference, training and evaluation pipelines, and labelling workflows. Mentors engineers and collaborates with Applied Science, Product and Data Science in a squad-based team.

AWS · Kubernetes · TensorFlow +4

• United Kingdom - Field
• Senior

Senior individual contributor providing cross-team technical leadership for the Agentic Trust solution, owning complex problem areas spanning multiple services and platform planes. Remains deeply hands-on, shaping designs, prototyping high-risk capabilities, resolving systemic issues, and creating reusable patterns. Involves identity, delegated authority, policy enforcement, and trustworthy execution, with mentoring and architecture reviews.

MCP · C2PA

• London
• £85,000 – £95,000 pa
• Senior

Lead the design of secure, scalable solutions across Microsoft Azure, translating business requirements into high-level and low-level architecture designs. The role covers cloud migration, system integration, API-led connectivity, networking and Infrastructure as Code, working alongside engineering, infrastructure and security teams to provide architectural oversight through delivery.

Microsoft Azure · Terraform · Bicep +7

• United Kingdom
• Remote
• Lead

Deliver white-glove onboarding and ongoing technical guidance for Managed XSIAM customers, analysing security data to improve detection coverage, alert quality and tenant hygiene. Lead customer touchpoints and security reviews while partnering with Unit 42 SOC engineering, Product and MDR teams to build automation workflows and scalable service frameworks.

XSIAM · Unit 42

• Paris, France
• Remote
• Mid-level

Owns the end-to-end migration of enterprise customers from legacy security platforms to Cortex, executing data cutovers, policy mappings, API setups and log ingestion validations. Runs practitioner-focused Day in the Life workshops and Value Realization sessions with customer leadership, using dashboards to demonstrate ROI and secure project sign-off.

Palo Alto Networks Cortex XDR · Cortex XSIAM · Prisma Cloud +2

• London
• Hybrid
• Mid-level

Builds new features and systems for Cloudflare's edge web server, focusing on the rules engine and its control plane. Works in Rust and Go on large-scale distributed systems, performance engineering, and reliability across a platform handling over 100 million HTTP requests per second.

Rust · Go · Cloudflare

• London
• Hybrid · 3 days in office
• £349 – £465 pd
• Lead
• Contract

Lead end-to-end AI and cyber security transformation embedded within technology teams, acting as SME on AI frameworks and defining guardrails as capabilities evolve. Design secure-by-default hybrid and cloud architectures aligned to NIST and ISO 27001, drive automation across IAM, network, endpoint and data security, and translate technical risk for C-suite stakeholders.

NIST · ISO 27001

• London
• Hybrid · 2–3 days in office
• £55,000 – £65,000 pa
• Senior

Owns the entire IT estate for a cybersecurity SaaS company, covering identity and access management, macOS device management, SaaS administration and end-to-end joiners, movers and leavers. An engineering-led role focused on automation, AI enablement and security controls that support SOC 2, ISO 27001 and Cyber Essentials Plus audits, working alongside the Director of Information Security and a Senior SecOps Engineer.

macOS · MDM · SSO +6

• Dublin, Ireland
• Hybrid · 1 day in office
• £69,059 – £73,375 pa
• Mid-level

Join a scaling SaaS platform team in a regulated environment, owning AWS infrastructure, Kubernetes (EKS) workloads, and Terraform-based IaC. You'll build and optimise CI/CD pipelines, write Python and Bash automation, monitor production systems, and support incident response alongside Software Engineering and QA.

AWS · Kubernetes · EKS +7

• Aberdeen
• Hybrid
• £650 – £720 pd
• Senior
• Contract

Lead and coordinate cybersecurity assessments, risk remediation and control improvements across Operational Technology environments, translating security gaps into practical remediation plans. Work with OT/ICS engineers, IT, technical authorities and third-party suppliers to strengthen critical operational systems, covering asset inventories, privileged access, network segmentation, monitoring and incident response.

SIEM · NIST Cybersecurity Framework · ISO 27001

• 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

• Chippenham
• Hybrid
• Senior
• Permanent

Provide end-to-end cyber security support for Spacecraft Control Centre Systems and Satellite Communications infrastructures, analysing functional needs, setting criticality levels and proposing protection concepts. Coordinate security architecture across disciplines, manage risks and ensure defences stay ahead of evolving threats. Requires CISSP/CISM and hands-on knowledge of Solaris, Linux, Windows, Cisco and JSP440.

Solaris · Linux · Windows +1

• Manchester
• Entry level
• Permanent

Monitors networks and systems for threats, triages security alerts and documents suspicious activity, working with partner teams on daily threat detection and incident response across AWS technologies at scale. Involves security automation, tracking detective controls like GuardDuty, CrowdStrike Falcon and Wiz Defend, and periodic on-call including weekends.

AWS · Amazon GuardDuty · CrowdStrike Falcon +1