Sr. Applied Scientist, Traffic Engineering

Amazon
Sunnyvale, CA, USA2026-02-26ONSITE

About the job

We are seeking an innovative Senior Applied Scientist to join Amazon's Traffic Engineering organization in developing next-generation bot detection and mitigation capabilities. You will lead the scientific development of real-time anomaly detection systems to identify and counter sophisticated automated threats, including LLM-powered agents, protecting Amazon's websites and subsidiaries worldwide.

Responsibilities

Design and develop advanced ML models for real-time detection of programmatic access patterns and anomalous behaviors

Pioneer new approaches in identifying LLM-based agents and emerging automated threats

Drive innovation in applying ML/AI techniques to traffic analysis, classification, pattern recognition and automated response systems

Collaborate with cross-functional teams to implement layered defense strategies

Mentor junior scientists and contribute to the team's technical direction

Qualifications

Minimum

3+ years of building machine learning models for business application experience

PhD, or Master's degree and 6+ years of applied research experience

Experience programming in Java, C++, Python or related language

Experience with neural deep learning methods and machine learning

Preferred

Experience with modeling tools such as R, scikit-learn, Spark MLLib, MxNet, Tensorflow, numpy, scipy etc.

Experience with large scale distributed systems such as Hadoop, Spark etc.