C

Cloudflare

Secures websites and runs apps on its network

Principal Data Scientist - Detection

Applied Machine LearningConfirmed live in the last 24 hours
Full-time

About the Job

Requirements

  • Experience professionally working in Data Science, Machine Learning Engineering, or Software Engineering; 8–10 years is stated as desirable rather than required.
  • Experience across fraud, abuse, and/or bot detection on large, high-velocity traffic.
  • Solid applied statistics, machine learning, and artificial intelligence methodology fundamentals, with fluency in large-scale data.
  • Comfort using Python and SQL in production environments.
  • Ability to make ambiguous, high-stakes technical decisions with incomplete information.
  • Ability to make progress when ground truth is weak, delayed, or absent, including in adversarial settings.
  • Understanding, or willingness to learn, how detection actions can avoid revealing signals and eroding future visibility.
  • Ability to judge when simpler solutions are more appropriate than complex ones and avoid disproportionate costs for small gains.
  • Strong programming and engineering practices in research and production code.
  • Ability to connect work to business impact and communicate clearly with technical and non-technical stakeholders.

Responsibilities

  • Lead research, design, and evaluation of detection models that identify automated, fraudulent, and malicious activity across Internet-scale data.
  • Mentor others in uncovering patterns and behaviors that distinguish adversaries from legitimate users.
  • Own the detection measurement framework, defining metrics and evaluation strategies for problems with noisy, delayed, or contested ground truth.
  • Drive adoption of promising artificial intelligence and machine learning techniques and represent Cloudflare in the broader research community.
  • Drive cross-functional partnerships with Machine Learning Engineers, Data Engineers, and Product; influence roadmaps and align detection strategy with company priorities.
  • Shape long-term detection strategy by identifying gaps and opportunities spanning multiple product areas.

Desired Qualifications

  • Experience professionally working in Data Science, Machine Learning Engineering, or Software Engineering for at least 8–10 years.

About the Company

Cloudflare

Secures websites and runs apps on its network

Cloudflare operates a network that protects websites, delivers online content and runs applications closer to their users. Businesses connect websites and internal systems to its services to filter malicious traffic, control access and improve performance, with security and computing running on shared infrastructure. Developers combine application code, object storage and databases with the network used for content delivery and traffic protection. Cloudflare earns revenue from subscriptions and usage charges, with free plans for basic features and negotiated contracts for larger organizations. Cloudflare was founded in 2009 and is headquartered in San Francisco, California.

Company size
1,001-5,000
Company stage
IPO
Headquarters
San Francisco, CA
Founded
2009

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