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ADECCO

Senior Product Security Engineer

On site

London, United kingdom

Senior

Freelance

30-01-2026

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Skills

Communication Incident Response CI/CD SDLC

Job Specifications

Senior Product Security Engineer
Financial Services | 6-month Contract | Inside IR35
London - 2 days onsite per week
My client, a leading Payments company is looking for a Senior Product Security Engineer to join their evolving cyber security function. This is a key role focused on embedding security across the full product life cycle and driving secure-by-design principles across engineering teams.
The Role
As a Senior Product Security Engineer, you will act as the primary security partner for product and engineering teams - ensuring applications are designed, built and maintained with robust security at their core. You will lead threat modelling, manage vulnerability backlogs, support incident response, and help uplift security maturity across development squads.
Key Responsibilities
Define and implement product security policies, tooling and standards across the SDLC
Lead threat modelling for new and existing applications
Own the product vulnerability backlog, prioritising and tracking remediation
Liaise on bug bounty findings and ensure timely fixes
Conduct root cause analysis for security incidents and systemic issues
Act as Incident Commander or Investigation Lead during security events
Partner with CI/CD teams to integrate SAST, DAST, SCA and other security controls
Collaborate with product, engineering and compliance stakeholders to deliver security initiatives
What You'll Bring
Strong expertise in vulnerability management, threat modelling and secure SDLC
Solid incident response and root cause analysis experience
Background in bug bounty or coordinated disclosure processes
Strong stakeholder engagement and communication skills
Experience with CI/CD pipeline security tools
Knowledge of third-party risk and regulatory considerations
Please apply with your updated CV if the role is of interest

About the Company

Perfect placements. Speedy staffing. Tenacious testing. Who's Adecco, we hear you ask? Only the top provider of first-class HR solutions. Our consultants work with some of the best, and most exciting, companies all over the world. We equip our clients with priceless industry insight and put everything we've got into training and mentoring our candidates. We're here to match talented people with the job opportunities and employers they're looking for. On any given day we connect over 700,000 people with fulfilling opportuni... Know more