Detection Engineer
CV-LibraryE14, Canary Wharf, Greater LondoncontractPosted: 1 October 2026
Apply NowDetection 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
* 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