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 architecture
• Help establish and evolve a Secure by Design approach
• Identify and mitigate security risks across web applications, APIs and cloud infrastructure
• Work hands-on across application and product security
• Carry out penetration testing and vulnerability assessments
• Review code and architecture to identify security weaknesses
• Investigate emerging security challenges associated with AI-powered products and workflows
• Turn technical findings into practical remediation and improved engineering practices
• Build strong relationships with engineering and product teams
• Help 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 experience
• Excellent application and API security knowledge
• Hands-on offensive security / penetration testing experience
• Strong understanding of modern software architecture
• Ability to read and review code
• Experience working with cloud-based environments
• Relevant security certifications are advantageous, but practical experience matters most
• Strong communication skills and the ability to influence engineers without becoming a blocker
• An 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.