Principal Data Scientist, Detection

Cloudflare
New York, London
Workplace: HybridFull timeUSD 215,000 - 270,000 annuallyFunction: Data Science & Machine LearningExperience: 8-10 yearsSkills: ["Mentoring","Clear communication","Cross-functional collaboration","Technical decision-making","Pragmatism"]

Build and evaluate detection models that identify automated, fraudulent, and malicious activity across Internet-scale data. Own detection measurement with strategies for noisy, delayed, or contested ground truth, and drive adoption of effective AI/ML techniques. Collaborate with ML, data, and product teams to shape long-term detection strategy, align priorities, and communicate clearly with technical and non-technical stakeholders.

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FursaFursa
Cloudflare
Cloudflare
2 days ago

Principal Data Scientist, Detection

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Source: Company careers pageValidated by: Fursa AI
Last checked: 3 hours agoStatus: Live

Job Summary

Build and evaluate detection models that identify automated, fraudulent, and malicious activity across Internet-scale data. Own detection measurement with strategies for noisy, delayed, or contested ground truth, and drive adoption of effective AI/ML techniques. Collaborate with ML, data, and product teams to shape long-term detection strategy, align priorities, and communicate clearly with technical and non-technical stakeholders.
Location: New York, London
Workplace: Hybrid
Employment Type: Full time
Job Function: Data Science & Machine Learning
Seniority: Mid level

Key Responsibilities

  • •Lead research, design, and evaluation of detection models for automated, fraudulent, and malicious activity across Internet-scale data.
  • •Mentor others on uncovering patterns and behaviors that distinguish adversaries from legitimate users.
  • •Own the detection measurement framework, defining metrics and evaluation strategies with noisy, delayed, or contested ground truth.
  • •Drive adoption of promising AI/ML techniques and represent the company in the broader research community.
  • •Drive cross-functional partnerships with ML Engineers, Data Engineers, and Product to align detection strategy with company priorities.

Pay and Benefits

Salary: USD 215,000 - 270,000 annually
Perks:Health InsuranceDentalVision401k

Key Requirements

  • •8-10 years of professional experience working in Data Science, ML Engineering, or Software Engineering.
  • •Experience with fraud, abuse, and/or bot detection on large, high-velocity traffic.
  • •Strong applied statistics and ML/AI methodology fundamentals, able to choose the right technique for the problem.
  • •Demonstrated ability to make ambiguous, high-stakes technical decisions with incomplete information.
  • •Comfortable with Python & SQL in production environments.
Experience:8-10 yearsFraud detectionBot detectionHigh-velocity trafficMachine learningData science
Skills:MentoringClear communicationCross-functional collaborationTechnical decision-makingPragmatism
Languages:English
Tech Stack:PythonSQLMachine learningAI

Company Brief

Cloudflare
Provides a global network and cloud platform that delivers security, performance, and reliability services for web applications, APIs, and Internet properties, including CDN, DDoS protection, DNS, and zero-trust security solutions.
Industry: Cybersecurity
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Public Company
Valuation: Public Company (Market Cap in USD)
Funding: IPO / Publicly Listed
Headquarters: San Francisco, United States
Founded: 2009
WebsiteLinkedIn