Senior Product Security Engineer

Senior Product Security Engineer | Hands-on IC | London / Remote | Up to £120,000 + Benefit I'm working with a high-growth digital business that's investing heavily in its engineering and security capabilities as it continues to scale. They're looking for a Senior Product Security Engineer who can operate hands-on within engineering while helping embed security into the way products are designed, built and shipped. This isn't a traditional security gatekeeper role. You'll be working closely with engineers and product teams, getting involved early in architectural decisions and helping teams understand and solve security problems in practical ways. 🛠️ The role: Drive threat modelling across new and existing product architectureHelp establish and evolve a Secure by Design approachIdentify and mitigate security risks across web applications, APIs and cloud infrastructureWork hands-on across application and product securityCarry out penetration testing and vulnerability assessmentsReview code and architecture to identify security weaknessesInvestigate emerging security challenges associated with AI-powered products and workflowsTurn technical findings into practical remediation and improved engineering practicesBuild strong relationships with engineering and product teamsHelp shape security strategy as the organisation continues to grow 🤖 AI & Security One of the particularly interesting aspects of this role is the opportunity to work on the security implications of AI and increasingly autonomous systems. You'll be thinking about areas such as AI-driven workflows, manipulation of model inputs, unintended actions, data exposure and how security controls need to evolve as products become more intelligent. 🎯 What I'm looking for: Someone with strong hands-on experience across Product Security / Application Security, ideally within a modern product-led engineering environment. You'll ideally bring: Strong threat modelling experienceExcellent application and API security knowledgeHands-on offensive security / penetration testing experienceStrong understanding of modern software architectureAbility to read and review codeExperience working with cloud-based environmentsRelevant security certifications are advantageous, but practical experience matters mostStrong communication skills and the ability to influence engineers without becoming a blockerAn interest in the evolving security challenges around AI 💰 The package: A competitive salary alongside equity, private healthcare, pension, learning & development support and a strong wider benefits package. 📍 London / Remote This is a great opportunity for someone who wants to move beyond traditional vulnerability management and security tooling and have a genuine influence on how products are designed and secured. If you're a senior Product Security / AppSec engineer and this sounds like the sort of challenge you'd be interested in, drop me a message and I'll share the details.