Principal Security Engineer (12 Month FTC)
We are seeking an experienced Principal Security Engineer for a 12-month fixed-term contract to provide technical leadership across a broad cybersecurity landscape. You will help define and deliver security strategies that protect critical systems, applications, data and infrastructure, while supporting the organisation’s wider technology and business objectives. This is a senior hands-on role requiring strong technical judgement, the ability to influence stakeholders, and a practical approach to managing security risk in a complex environment.
Responsibilities will include designing and reviewing secure architectures, leading threat modelling and security assessments, and embedding security controls throughout the software development and technology lifecycle. You will work closely with engineering, infrastructure, cloud, operations and risk teams to identify vulnerabilities, recommend proportionate mitigations and oversee remediation activity. The role will also involve developing security standards and patterns, contributing to incident response and investigation, supporting vulnerability management, and advising on identity, access management, encryption, network security and cloud security. You will help improve security tooling, processes and governance, communicate technical risks to senior stakeholders, and mentor security engineers and technology colleagues.
Applicants should have substantial experience in a senior security engineering, security architecture or equivalent role, together with a strong understanding of modern enterprise security principles and threat landscapes. Experience securing cloud platforms, distributed systems, APIs and production environments is highly desirable, as is familiarity with DevSecOps, infrastructure as code, containerisation and automated security testing. You should be comfortable assessing complex technical designs, balancing security with usability and delivery requirements, and translating technical issues into clear business recommendations. Relevant professional certifications or demonstrable equivalent expertise would be advantageous. Excellent communication, collaboration and problem-solving skills are essential, along with the ability to work independently, manage competing priorities and deliver meaningful outcomes within a fixed-term engagement.
Principal Security Engineer (12 Month FTC)
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