102 jobs
CrowdStrike London
Owns the global product vision and multi-year strategy for CrowdStrike's Falcon Next-Gen SIEM platform, prioritising third-party data connectors and integration pipelines based on market research and customer demand. Works across engineering, data services, sales ops and partners to define ingestion SLOs, mentor product managers and expand the SIEM ecosystem.
Cloudflare London
Design, build and operate distributed systems behind Cloudflare's Application Security products (WAF, Page Shield, API Shield) at internet scale, using Go or Rust and devops tooling like Kubernetes and Kafka. The role includes reviewing RFCs and code, on-call shifts, and mentoring other engineers.
Darktrace London
Contributes to projects spanning rapid prototyping and open-ended research into generative AI security, investigating attacker tradecraft such as prompt injection, poisoning and extraction attacks. Acts as a domain expert, feeding insights back to product, development and machine learning teams, with coverage in network, endpoint, cloud or Kubernetes.
Darktrace Cambridge
Owns prototyping and development of new ideas to improve Darktrace's cybersecurity services, balancing creativity with time constraints. Collaborates with a cross-functional team of engineers, designers and technical strategists on rapid prototyping and structured platform development, advancing methods for defending against unknown cyber-attacks. Requires production-quality Python coding, with Docker and containerisation experience and an interest in malware forensics.
Cloudflare London
Lead the Threat Application Services team within Cloudforce One, owning the Threat Events platform, external Threat Intel APIs, and backend systems that feed IOCs into WAF and Gateway for automated mitigation. Set architectural direction and operational excellence for distributed, high-latency-sensitive services, while hiring and mentoring engineers building agentic threat intelligence tools.
Barclays London
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.
Netcraft London
Join the Novel Classification team to build and operate machine learning systems that detect phishing sites and online scams at scale. You'll train, evaluate and serve classifiers on GPU-backed Kubernetes, run live experiments on precision and recall, and deploy LLM inference and computer vision models into production.
REVYBE IT RECRUITMENT LIMITED London £100,000 – £115,000 pa
Lead a team of three platform engineers while spending roughly half your time hands-on, owning the reliability, security and scalability of an Azure-based cloud platform. You'll set the platform roadmap, champion Terraform and Kubernetes/Azure Container Apps, and improve CI/CD with Azure DevOps and GitHub Actions. Fully remote in the UK with one day per month in London.
Cloudflare London
Builds and maintains a Chromium-based browser engine, remote rendering and streaming tech, and distributed services that run browser sessions across a global network. Day-to-day work spans C++ browser code, Go/Rust/TypeScript services, debugging across browser processes and Linux hosts, and improving latency and reliability, with production on-call.
Cloudflare London
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.
Cloudflare London US$215,000 – US$225,000 pa
Lead research, design and evaluation of detection models identifying automated, fraudulent and malicious activity across Internet-scale traffic. Own the detection measurement framework for noisy or delayed ground truth, mentor others, and drive cross-functional detection strategy with ML, data and product teams.
Cloudflare London
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.
