Petra-SecurityVerified Source

Senior Machine Learning Engineer at Petra-Security

Onsite · San Francisco, California
Posted July 31, 2026
payroll

Overview

We seek a Senior Machine Learning Engineer to lead our AI-driven Detection and Response platform. You will own our core ML detection systems and drive scaling strategies to protect over 2.5 million users. This is a rare chance to scale to $30M+ in revenue within 12 months.

What You'll Do7

  • 1Build and evolve detection models with CTO and Head of Machine Learning to identify account compromise in real time
  • 2Take models from research to production while measuring behavior at scale with live attackers
  • 3Architect solutions that handle 10-100x increased load within six months
  • 4Raise technical standards through pattern establishment and quality focus
  • 5Design and implement end-to-end systems using Node TypeScript React and Python
  • 6Collaborate with cross-functional teams to solve complex problems
  • 7Identify attack signals and develop creative approaches to stay ahead of competitors

Requirements5

  • 15+ years of machine learning engineering experience shipping production models
  • 2Strong quantitative background in probability statistics linear algebra anomaly detection behavioral modeling NLP
  • 3Proven ability to train and deploy models in production environments
  • 4Experience with real-time streaming data pipelines feature stores high-performance databases and distributed systems
  • 5Bonus experience in high-stakes domains such as quantitative finance or fraud detection

Salary Insight

Salary not disclosed in listing

Location

Typeonsite
LocationSan Francisco, California

Required Skills

pythonawsreactsparkairflow
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