Senior Applied Scientist, Leo Security

About the role

Applied R&D role building graph-based neurosymbolic reasoning, LLM agents, RL fine-tuning, behavioral threat models and production security workflows for Amazon Leo satellite infrastructure. Export controls limit eligibility to U.S. citizens/nationals, permanent residents, refugees or asylees.

Requirements

• 3+ years building machine learning models for business applications
• PhD, or master degree plus 6+ years applied research
• Programming in Java, C++, Python, or related language
• Neural deep learning and machine learning
• Graph algorithms, knowledge graphs, unsupervised learning, NLP and embedding retrieval
• AI evaluation frameworks using human judgment
• Export-control eligibility limited to U.S. citizens/nationals, permanent residents, refugees or asylees

What you'll do

• Build production graph-based neurosymbolic systems integrated with LLM agents
• Design RL and model fine-tuning pipelines for security reasoning
• Model threat actor behavior and evaluate detection performance
• Build multi-agent security triage and response systems with safety validation
• Lead research through production deployment

Where this was posted

• LinkedIn

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