Product security engineer in SaaS platforms

Cloudflare; Greater London; Sur place; GBP 120 000 - 180 000; Plein temps

Avantages offerts par ce poste

Medical/Rx Insurance

Vision Insurance

Flexible Spending Accounts

Commuter Spending Accounts

Fertility & Family Forming Benefits

On-demand mental health support and E1

Global Travel Medical Insurance

Short and Long Term Disability Income

401(k) Retirement Savings Plan

Employee Stock Participation Plan

Flexible paid time off covering VAC &S

Leave programs, including parental, M&

Résumé du poste

Cloudflare, Inc. is seeking a Senior Product Security Engineer to lead security assessments and vulnerability operations for its core SaaS platforms. You will analyze system architecture, model threats, and ensure findings are triaged and remediated within SLAs.

You will architect AI-driven solutions to automate code analysis, strengthen triage, and scale product security workflows while mentoring engineers and partnering with cross-functional teams.

Description du poste

Product security engineer in SaaS platforms

As a Senior Product Security Engineer, you will lead security assessments and vulnerability operations for Cloudflare’s core software products. In this role, you will analyze system architecture, threat model new features, and ensure that product-related security findings are accurately triaged, routed to the correct engineering owners, and mitigated within our SLAs.

• Proactively identify gaps in our current capabilities and independently architect, build, and deploy AI-driven solutions to automate code analysis, optimize triage, and scale Product Security workflows.
• Lead deep-dive security reviews and complex threat modeling sessions across distributed systems, embedding strict security requirements into product designs before development begins.
• Own the lifecycle of product security findings. Ensure vulnerabilities are accurately triaged, mapped to the correct engineering owner, and mitigated in alignment with established SLAs.
• Oversee the technical triage and validation of Cloudflare’s external Bug Bounty program, prioritizing submissions based on real-world exploitability and business risk.
• Shape the scope of internal and external penetration testing engagements, serving as the technical liaison to ensure findings are deeply understood and remediated by development teams.
• Act as a force-multiplier for security across Cloudflare; mentor junior engineers, cultivate security champions within engineering organizations, and establish modern, paved-road developer guardrails.
• Extensive, battle-tested experience in Product or Application Security within large-scale distributed cloud environments or SaaS platforms.
• Demonstrated ability to build production-grade automation scripts and tools . Must possess hands-on engineering experience leveraging AI/LLMs to solve operational or technical challenges.
• Mastery of threat modeling methodologies (e.g., STRIDE) and an analytical mindset capable of translating complex theoretical risks into prioritized, actionable business context.
• Proven track record of managing, routing, and driving the remediation of vulnerabilities across multi-stakeholder engineering organizations while strictly enforcing SLAs.
• Superb cross-functional leadership skills; the ability to confidently influence senior engineering leaders, resolve ownership ambiguity, and champion security initiatives without explicit authority.
• This role is eligible to participate in Cloudflare’s equity plan.
• Medical/Rx Insurance
• Vision Insurance
• Flexible Spending Accounts
• Commuter Spending Accounts
• Fertility & Family Forming Benefits
• On-demand mental health support and Employee Assistance Program
• Global Travel Medical Insurance
• Short and Long Term Disability Insurance
• 401(k) Retirement Savings Plan
• Employee Stock Participation Plan
• Flexible paid time off covering vacation and sick leave
• Leave programs, including parental, pregnancy health, medical, and bereavement leave