Product Security Engineer

Cloudflare • San Francisco, CA

11h • Onsite

About The Position

As a Product Security Engineer, you will support 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. On any given day, you might conduct a deep-dive security review on a new feature design, triage a complex bug bounty submission, or work directly with engineering teams to resolve vulnerabilities from different sources like bug bounties, SAST, fuzzing and penetration tests. You will also work autonomously to identify areas where our manual processes slow down. You will write code and integrate AI/LLM solutions to automate initial triage and data enrichment, building tools that help the team handle security findings at scale. In short, your work will sit at the intersection of Product Security, Vulnerability Operations, and internal AI Tooling. Ideally, you have experience in conducting academic/vulnerability research with a focus on systems security.

Requirements

• Product/AppSec Expertise: 5+ years of experience in Product or Application Security within large-scale distributed cloud environments or SaaS platforms.
• Practical AI & Automation Engineering: 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.
• Threat Modeling & Risk Analysis: Competency in threat modeling methodologies and the ability to evaluate code flaws to determine their actual engineering and security impact.
• Vulnerability Lifecycle Operations: Experience tracking, routing, and driving the remediation of software vulnerabilities across engineering groups while working against defined SLAs.
• Strong Collaboration & Communication: Ability to collaborate effectively across teams, clearly communicating technical security risks to software engineers and resolving ownership ambiguity constructively.

Nice To Haves

• Offensive Security Tooling: Familiarity with modern exploitation techniques, fuzzing frameworks, or automated scanning utilities.
• Program Management Experience: Experience scaling crowdsourced security programs (e.g., HackerOne, Bugcrowd) or optimizing agile project management workflows within JIRA.
• Experience in integrating hardware security features into production code bases

Responsibilities

• Implement AI Security Solutions: Identify process bottlenecks and build AI-driven tools or scripts to help automate code analysis, optimize triage, and streamline Product Security workflows.
• Security Reviews & Threat Modeling: Conduct structured security reviews and threat modeling sessions (e.g., STRIDE) across product features, defining security requirements early in the development lifecycle.
• Product Vulnerability Management: Manage the operational lifecycle of product security findings. Ensure vulnerabilities are verified, mapped to the correct engineering owner, and tracked to mitigation in alignment with established SLAs.
• Bug Bounty Triage: Perform the technical triage and validation of Cloudflare’s external Bug Bounty submissions, verifying exploitability and evaluating business risk.
• Pentest Coordination: Support internal and external penetration testing engagements by reviewing findings, clarifying technical context, and assisting development teams with remediation strategies.
• Engineering Collaboration: Partner closely with DevOps and product teams, acting as a reliable security point of contact and helping developers implement secure coding practices.

Benefits

• Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code.
• Project Galileo : Since 2014, we've equipped more than 2,400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare’s enterprise customers--at no cost.
• Athenian Project : In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration. Since the project, we've provided services to more than 425 local government election websites in 33 states.
• 1.1.1.1 : We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed