Cyber Security Jobs

• United Kingdom
• Remote
• Mid-level

Lead and support cloud incident response engagements and security assessments for clients, analysing cloud and hybrid architectures and providing remediation guidance. The role also involves mentoring junior consultants, developing internal and open-source tooling, and researching emerging cloud security techniques.

AWS · Azure · GCP +4

• London
• Hybrid
• Senior

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.

Ansible · Terraform · Python +7

• London
• Remote

Owns the end-to-end migration and security operations transformation for enterprise customers moving from legacy platforms to Cortex XDR/XSIAM, Prisma Cloud or Strata. Runs data cutovers, policy mapping, API and log ingestion work, plus Day-in-the-Life workshops and executive value realization sessions. Combines hands-on Python, CLI and REST API automation with customer-facing delivery in a global, remote-first team.

Cortex XDR · Cortex XSIAM · Prisma Cloud +2

• London
• Remote
• Lead

Lead and deliver reactive incident response engagements for clients, managing scoping, forensic investigations and containment of security incidents. Perform host-based analysis across Windows, Linux and macOS, examine firewall, web and database logs, and use tools such as EnCase, FTK, X-Ways, SIFT and Splunk to determine breach scope. Also mentors junior team members and provides remediation guidance to customers.

EnCase · FTK · X-Ways +5

• London
• Senior

Builds and operates Cloudflare's Chromium-based browser isolation engine, working across C++, Rust, Go and TypeScript on remote rendering, streaming and distributed session services. The role spans systems programming, distributed systems and security, leading multi-component initiatives and on-call incident response.

Chromium · Cloudflare Workers · Nomad +3

• 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

• London
• Senior · manages people

Owns the optimisation and strategy of transaction monitoring controls across Barclays UK and International, tuning surveillance systems and ensuring governance and escalation procedures are followed. Uses SQL, Scala, Spark and Python for data exploration and visualisation, collaborating with technical and non-technical stakeholders on financial crime risk.

SQL · Scala · Spark +1

• London
• Hybrid
• Lead · manages people

Lead a newly formed backend team owning several key products, including an integration layer for SIEM platforms, a system engaging conversational scammers at scale, and email analysis for phishing detection. Split time between hands-on engineering (30-50%) and managing a delivery roadmap, modernising legacy platforms while commercialising new ones.

Go · OpenSearch · MongoDB +5

• 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

• USA, NY
• Remote
• US$140,000 – US$215,000 pa
• Lead · manages people

Lead a growing team of engineers building self-service infrastructure-as-code primitives, high-availability core services and cloud cost optimization across a multi-cloud environment. The role combines people management, architecture review and roadmap planning, with hands-on work in Terraform, Pulumi, Python or Go, Linux and SRE practices at massive scale.

Chef · Puppet · Salt +7

• Canada - Remote ON
• Remote
• CA$150,000 – CA$200,000 pa
• Lead · manages people

Lead a growing team of engineers building self-service infrastructure-as-code primitives, architecting large-scale core services, and driving cloud cost optimization across a multi-cloud environment. The role blends people management with hands-on technical direction, including design reviews, roadmap planning, and SRE practices such as SLO management and on-call.

Chef · Puppet · Salt +7

• USA, DC
• Remote
• £140,000 – £215,000 pa
• Senior · manages people
• Permanent

Lead a team of engineers building the foundational platform behind CrowdStrike's massive-scale distributed systems, including self-service infrastructure-as-code primitives and multi-cloud services. The role blends people management with hands-on architecture work, driving cloud cost optimization, deployment standards, and SRE practices across AWS and GCP.

Chef · Puppet · Salt +7