Application Security Engineer - Manager

At OakNorth, we’re on a mission to empower the UK’s most ambitious businesses. Since 2015, we’ve lent over $21 billion across the UK and US, helped create more than 58,000 new homes and 36,000 new jobs, and supported hundreds of thousands of personal savers — all while fuelling the UK economy. Team Mission 🚀 Role Overview: We are seeking an experienced application security engineer to conduct security assessments across web applications, APIs, mobile applications and cloud hosted solutions; and contribute towards threat modelling and secure design reviews. This role is primarily hands-on offensive security focused on identifying real world vulnerabilities that could impact business. Additionally, the role will support threat modelling and secure architecture reviews to help identify potential weaknesses during system design and development. The successful candidate will demonstrate strong adversarial thinking, deep technical expertise, and the ability to clearly articulate security risks and practical remediation guidance to both technical and non-technical stakeholders.