Detection Engineer * Sheffield or London – 1–2 days per week onsite * Initial 6-month contract * £600 per day via umbrella * Inside IR35 We’re working with a leading bank to appoint Detection Engineers to join a growing internal defensive security team. The team is expanding its dedicated detection capability, moving from detection engineering being a secondary responsibility within the Cloud function to a specialist, full-time discipline. You’ll work as part of a global team across the UK, Poland and Mexico. The role is focused entirely on defensive security and threat hunting, with an emphasis on building high-quality detections rather than simply increasing volume. Key responsibilities: * Develop high-quality detection use cases from external threat intelligence and internal security data * Analyse intelligence and translate it into effective detections for the organisation * Use Red Team outputs to identify gaps, understand attack techniques and determine where to detect malicious activity * Conduct threat hunting and identify opportunities to improve defensive coverage * Work closely with security and technology teams to understand the environment and optimise detection capability * Deliver detection engineering through Agile, sprint-based and Scrum ways of working Requirements: * 3–5 years’ experience across technology operations, development or security * Hands-on experience writing and developing security detections * Strong understanding of threat hunting and defensive security * Experience working with threat intelligence and translating intelligence into actionable detections * Experience within a large financial services organisation or similarly complex, highly regulated environment * Comfortable working in an Agile/Scrum delivery environment * Curious, technically minded and hungry to investigate how attackers operate and how they can be detected More details available on successful application