refractal - Security Engineer (Detection & Response)
Requirements
• Experience contributing to a security product or working closely with software and research engineers. • Scripting skills for preparing data, prototyping ideas or creating repeatable security tests. • An interest in how AI changes attacker behaviour and the security of autonomous agents. • Radical transparency. We believe the best work happens when everyone feels able to give and receive honest, constructive feedback. • Public service. We see AI security as a form of public service. Getting the AI transition right means putting the right infrastructure in place to manage the threats that come with it, and our work helps protect the institutions and services society depends on. • Fail fast. We test ideas early, seek feedback and learn quickly. We experiment rapidly and change course when something isn't working, without compromising on security. • Pragmatism, not dogmatism. We choose approaches based on how well they solve the problem. That means combining established cybersecurity methods with frontier AI research, questioning our assumptions, and changing our minds when the evidence changes.
Responsibilities
• Translate detection and investigation workflows into product requirements, helping engineers understand what security teams need and why. • Use your experience with detection rules and SIEMs such as Splunk and Datadog to guide product design and integration priorities. • Build realistic examples and test cases that capture attacker behaviour, benign activity and common sources of false positives. • Evaluate product outputs for detection quality, useful context and the effort required for an analyst to reach a decision. • Work with customers and colleagues to identify gaps, prioritise improvements and check that changes address practical security needs. • SUCCESS IN YOUR FIRST SIX MONTHS • You've translated important detection and response needs into clear product requirements and helped deliver improvements. • You've built representative test cases that help the team assess detection quality and investigation usefulness. • You've established a feedback loop that brings practitioner experience into engineering and research decisions.
Benefits
• £60K – £115K • Offers Equity • Upload your resume here to autofill key application fields. • Drop your resume here! • Parsing your resume. Autofilling key fields... • or drag and drop here • City and country. • No, I already have the right to work there • Yes, I would need sponsorship • In a sentence or so, why are you interested in joining Refractal? • What was it meant to catch, which data and SIEM did it run on, and how did you test that it worked and keep false positives down? • Within one month • Within three months • In more than three months • Finally, is there anything else you'd like to share? Links to work you're proud of, such as projects, research, writing or a portfolio, are welcome.
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