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Cloudflare

Software Engineer, Cloudforce One

Hybrid
Full-time
Senior or above
UK
Posted on November 08, 2025

About the role

💼 What you will do

• Own entire software development lifecycle for threat disruption and legal response systems • Translate complex legal and security requirements into robust, scalable, high-performance applications • Work with technologies including Golang, TypeScript, Rust, Kafka, Redis, Kubernetes, Terraform, Temporal and PostgreSQL • Leverage incredibly vast data points from one of world's largest global networks • Make direct impact on making internet better, safer, and more powerful every day

📋 Job Requirements

• Hold at least 5 years of experience building large-scale software applications, preferably distributed systems • Design and integrate RESTful APIs and/or gRPC services • Demonstrate knowledge of SQL and common relational database systems such as PostgreSQL • Write production ready code in Go and/or TypeScript • Show familiarity with Rust • Apply excellent debugging and optimization skills • Maintain expertise in writing well tested code • Express interest in opportunities to be technical mentor for teammates

🌟 Nice-to-have

• Work in Trust & Safety and Legal domain space • Understand DNS, TLS/SSL and HTTP deeply • Apply expertise in web security issues and industry standards for access control • Use Kafka in production environments • Build web applications using React • Operate Kubernetes clusters • Work with Redis

🎯 Responsibilities

• Design, build, run, and scale distributed tools and services supporting cyber threat disruption and Legal Response efforts • Develop critical data pipelines and services to collect, analyze, and expose threat intelligence data for Cloudforce One analysts and customers • Extend, improve, and maintain mission-critical Trust & Safety solutions including CSAM Scanning Tool and legal compliance pipelines • Collaborate closely with Threat Operations, Trust & Safety, Legal, and Product teams to translate complex technical requirements into scalable solutions • Improve system design and architecture ensuring stability, performance, and maintainability of compliance and security services • Analyze, communicate, and help prioritize complex technical concepts across teams • Monitor and maintain production services including participation in on-call rotations • Mentor and guide other developers promoting best practices for writing well-tested, modular, and reusable code

About Cloudflare

😃 What Cloudflare offers

• Work extensively with Cloudflare's developer platform and products • Join threat operations team identifying and disrupting cyber threats from sophisticated cyber criminals to nation-state sponsored APTs • Analyze unique data points at massive scale and efficiency • Participate in Project Galileo protecting journalism and civil society organizations in 111 countries • Join equal opportunity employer committed to diversity and inclusiveness • Receive reasonable accommodations for qualified individuals with disabilities

💖 What makes Cloudflare unique

Cloudflare runs one of the world's largest networks powering millions of websites and Internet properties for customers from individual bloggers to Fortune 500 companies. Cloudforce One is Cloudflare's threat operations and research team responsible for identifying and disrupting cyber threats ranging from sophisticated cyber criminal activity to nation-state sponsored advanced persistent threats (APTs). The team works in close partnership with external organizations and internal teams, continuously developing operational tradecraft and expanding threat intelligence sources to enable expedited threat hunting and remediation.

This position is no longer available, but we have other great opportunities!

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