Product Security Engineer – Hybrid

Webhosting; Austin (TX); On-site; USD 140,000 - 200,000; Full time

Benefits offered by this job

Equity plan

Health & welfare benefits

Time off

Job summary

Cloudflare is seeking a Product Security Engineer in Austin, TX to support security assessments and vulnerability operations for core software products. You will analyze architecture, model threats, triage findings, and coordinate mitigations within SLAs.

You may conduct deep-dive reviews, triage bug bounty submissions, and collaborate with engineering to resolve vulnerabilities from bug bounties, SAST, fuzzing, and pen tests. Expect AI-enabled tooling to scale security workflows.

Qualifications

• 5+ years in Product or Application Security in large-scale cloud environments.
• Hands-on automation experience using AI/LLMs for security workflows.
• Experience with threat modeling methods and risk assessment.
• Proven track record in managing vulnerability lifecycle across teams.
• Strong collaboration and clear security communication with engineers.

Responsibilities

• Implement AI-driven security tooling to automate triage and data enrichment.
• Lead threat modeling sessions across product features.
• Manage security findings and track remediation within SLAs.
• Triage bug bounty submissions and assess exploitability and risk.
• Coordinate pen tests and support remediation with development teams.
• Partner with DevOps and product teams to embed secure coding practices.

Skills

Product/AppSec expertise

AI & automation engineering

Threat modeling & risk analysis

Vulnerability lifecycle operations

Strong collaboration & communication

Offensive security tooling

Program management experience

Hardware security integration

Tools

AI/LLM tooling

Fuzzing frameworks

Vulnerability assessment tooling

Bug bounty platforms

Job description

At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.

At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a “normalized” problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in.

Available Locations:Austin, TX

Role Summary

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.

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.

Desirable Skills, Knowledge, and Experience

• 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.
• 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

Equity

This role is eligible to participate in Cloudflare’s equity plan.

Cloudflare offers a complete package of benefits and programs to support you and your family. Our benefits programs can help you pay health care expenses, support caregiving, build capital for the future and make life a little easier and fun! The below is a description of our benefits for employees in the United States, and benefits may vary for employees based outside the U.S.

Health & Welfare Benefits

Time Off

What Makes Cloudflare Special?

We’re not just a highly ambitious, large-scale technology company. We’re a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.

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.

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