Principal Product Security Engineer
We are seeking a Principal Product Security Engineer to provide technical leadership across the secure design, development, and operation of products and services. In this role, you will shape product security strategy, influence engineering roadmaps, and embed security practices throughout the software development lifecycle. You will work closely with product managers, software engineers, architects, and infrastructure teams to identify risks early and deliver practical, scalable solutions that protect customers and business operations.
Your responsibilities will include leading threat modelling and security architecture reviews, defining security requirements, and advising teams on secure design patterns, authentication, authorisation, cryptography, data protection, and cloud security. You will establish and improve secure development standards, code review practices, vulnerability management processes, and security testing programmes. You will also guide the assessment and remediation of vulnerabilities, support incident response activities where product expertise is required, and help develop metrics that demonstrate security maturity and risk reduction. As a senior technical authority, you will mentor engineers, promote security awareness, and communicate complex risks clearly to both technical and non-technical stakeholders.
You will bring significant experience in product or application security, with a strong understanding of modern software engineering, distributed systems, APIs, cloud platforms, and DevSecOps practices. Experience with security testing tools, threat modelling methodologies, secure coding principles, and common application vulnerabilities is essential. The ability to influence without direct authority, manage competing priorities, and make sound risk-based decisions is important. Relevant professional certifications or equivalent practical experience are welcome. We value curiosity, clear communication, collaborative leadership, and a pragmatic approach that enables teams to build secure, reliable products without unnecessary friction.
Principal Product Security Engineer
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