Principal Product Security Engineer
We are seeking a Principal Product Security Engineer to define and advance security practices across the product development lifecycle. In this senior technical role, you will work closely with engineering, architecture, infrastructure, quality assurance, and product teams to ensure that security is embedded from design through deployment and ongoing operation. You will help shape security strategy, influence technical direction, and provide practical guidance on building resilient, trustworthy products.
Your responsibilities will include establishing and evolving secure development standards, threat modelling approaches, security architecture principles, and risk assessment processes. You will review designs and code for security weaknesses, identify vulnerabilities, and guide teams toward effective remediation. You will lead or support security testing activities, including application testing, penetration testing coordination, dependency analysis, API security reviews, and cloud security assessments. You will also help define security requirements, improve vulnerability management, contribute to incident response, and develop meaningful metrics that demonstrate product security maturity. As a principal-level subject matter expert, you will mentor engineers, facilitate security reviews, and promote practical security awareness across the organisation.
The successful candidate will bring extensive experience in product or application security, with a strong understanding of secure software development, modern application architectures, cloud environments, identity and access management, cryptography, and common web and API vulnerabilities. Experience with threat modelling frameworks, security automation, DevSecOps practices, and industry standards such as OWASP, NIST, or ISO 27001 is highly desirable. You should be confident communicating complex risks to both technical and non-technical audiences, influencing decisions without relying on formal authority, and balancing security, usability, delivery timelines, and business objectives. Strong analytical skills, sound judgement, curiosity, and a collaborative approach are essential.
Principal Product Security Engineer
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