System Engineer, Behavioral Analysis

About Us

At Cloudflare we are on a mission to help build a better Internet. Today the company runs one of the worlds 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 Magazines Top Company Cultures list and ranked among the Worlds Most Innovative Companies by Fast Company.

At Cloudflare were not looking for people who wait for a polished roadmap; were 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 youre 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 youll fit right in.

Available Locations: Austin Texas or New York

About the Role

Cloudflare One brings together secure access network connectivity and data protection. Our products generate massive amounts of signals about how people and agents access applications use the network and handle databut a security practitioner needs more than isolated events. They need to understand what happened whether it is unusual why it matters and what to investigate next.

The UEBA (User and Entity Behavior Analytics) team builds the systems behind those answers. We ingest and evaluate Cloudflare One signals produce high fidelity user-risk events maintain risk scores and make that information available to customer-facing experiences and other Cloudflare services. Today we are focused on expanding our behavioral detections and improving the clarity of the resulting investigations and integrations.

As a Systems Engineer you will build and operate production services in this pipeline. You might implement a detection for an unusual pattern of DNS activity or data movement improve how events contribute to a users risk score or make risk-event history easier for customers to investigate. You will own well-defined projects through design implementation testing rollout and operational follow-through working with other engineers Product and partner teams across Cloudflare.

Responsibilities

• Build behavioral detections . Turn product requirements and available telemetry into production-ready detections across signals such as Access Gateway DNS device posture and data protection. Define the data dependencies evaluation approach and how you will assess signal quality before release.
• Make risk understandable . Help connect detection output to event history logs and customer-facing investigations so practitioners can see what triggered a finding and how a users risk changed.
• Design & Scale Infrastructure : Architect deploy and maintain robust distributed systems focusing on high availability low latency and horizontal scalability.
• Collaborate across teams . Collaborate with Product and engineers in Access Gateway Analytics and Reporting Logs and other data-producing or data-consuming teams to agree on event contracts and deliver end-to-end functionality.
• Ensure Reliability . Participate in architecture reviews capacity planning and proactive system health monitoring to guarantee maximum uptime and resilience.

Desirable Skills Knowledge and Experience

• 3 years of professional experience building testing and operating backend or distributed systems in production.
• Strong proficiency in at least one systems programming language (e.g. Go Rust C/C) with a track record of writing clean maintainable code.
• 3 years of practical experience with databases and data-intensive servicesfor example PostgreSQL ClickHouse or comparable relational or analytical stores.
• Experience reasoning about event-driven systems: message delivery duplicate or late events state failure recovery and safe changes to live consumers or APIs.
• Clear written and verbal communication and an ability to work through technical decisions with product and engineering partners.
• Experience using metrics logs traces profiling and experiments to understand production behavior and validate improvements
• Bring strong opinions clear judgment and a willingness to revise your view when data users or production reality prove otherwise.

Bonus Points

• Experience with security analytics fraud or abuse detection identity Zero Trust SASE or network telemetry.
• Familiarity with Kafka or other streaming systems; Kubernetes; and high-volume event processing.
• Experience with statistical baselines anomaly detection time-windowed aggregation or evaluating false positives and detection coverage.
• Familiarity with DNS authentication events data-loss-prevention signals or endpoint-security integrations.
• Experience with distributed state caches object storage or safe migration of a legacy production service.

Compensation

Compensation may be adjusted depending on work location and level.

New York Estimated Base salary $150000 - $206000.

Austin Texas Estimated Base salary $136000 - $187000.

What Makes Cloudflare Special

Were not just a highly ambitious large-scale technology company. Were 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 weve equipped more than 2400 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 Cloudflares 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 weve 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. Heres the deal - we dont 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.

Sound like something youd like to be a part of Wed love to hear from you!

Please note that applicants who progress to the offer stage of the interview process may be asked to attend an in-person interview within one of the Cloudflare Offices or Cloudflare Hubs. More details about this will be available at that stage of the interview process.

This position may require access to information protected under U.S. export control laws including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license.

Cloudflare is proud to be an equal opportunity employer. We are committed to providing equal employment opportunity for all people and place great value in both diversity and inclusiveness. All qualified applicants will be considered for employment without regard to their or any other persons perceived or actual race color religion sex gender gender identity gender expression sexual orientation national origin ancestry citizenship age physical or mental disability medical condition family care status or any other basis protected by law. We are an AA/Veterans/Disabled Employer.

Cloudflare provides reasonable accommodations to qualified individuals with disabilities. Please tell us if you require a reasonable accommodation to apply for a job. Examples of reasonable accommodations include but are not limited to changing the application process providing documents in an alternate format using a sign language interpreter or using specialized equipment. If you require a reasonable accommodation to apply for a job please contact us via e-mail at or via mail at 101 Townsend St. San Francisco CA 94107.

Required Experience:

IC