Security Engineer, Detection and Response

Cloudflare, Lisbon, Portugal

Help us build a better Internet

About the Department

Information Security at Cloudflare is a focused team committed to helping secure both Cloudflare and our customers. The Incident Response team is responsible for the front line of both defense and response to security incidents, helping keep Cloudflare and our customers safe. 

About the Role

We are looking for Security Engineers to join our Incident Response team. The ideal candidate can think both tactically in dealing with security incidents and strategically in anticipating future threats against our infrastructure, all while working at internet-scale. The ability to communicate and collaborate with engineers and analysts will be critical in order to be successful.  


  • Participate in the security incident response process.
  • Monitor and build tooling around threat feeds
  • Design and Build automation around the incident response process
  • Act as a first responder to both internal and external notifications
  • Detect and remediate security incidents.
  • Work with engineering teams to ensure logs are standardized and available.
  • Communicate risk to both technical and non-technical leaders across the business.


  • Familiar with the challenges of processing security events at scale.
  • Familiarity with log formats and host or network based intrusion detection systems.
  • Knowledge of vulnerability management using tools like Nessus.
  • Knowledge security SIEMs like AlienVault, SecurityCenter.


About Cloudflare

About us

Cloudflare is the simplest way to make websites faster, safer and smarter. Millions of websites have signed up for our service, including large enterprises, major consumer destinations, and government agencies. With offices in San Francisco and London, Cloudflare operates a highly-available global network that has security measures built into every layer and regularly clocks in lightning-fast speeds.

We're on a mission to build a better web - and we need smart, talented people to join our team. Our team works on the forefront of leading technologies including nginx, Go and Lua programming languages. We're a strong supporter of the open source community and regularly share our technology learnings at https://blog.cloudflare.com.

Want to learn more about Cloudflare? Visit Cloudflare's website.