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Senior Applied Scientist - Behavior AI

Paris💼 Full-time🗓 2026-07-06 → 2026-09-26

Core

Building small, custom AI models for high-throughput stream processing to detect anomalies in Datadog's security products across billions of logs and events in real time.

Role type

Senior Applied Scientist (ML Systems & Optimization)

Builds

Custom mid-size anomaly detection models, training data pipelines, and agentic validation layers for Datadog's security platform.

Domain

Cybersecurity / Observability / High-throughput Stream Processing

Deliverable

production ML models

Required skills

Large-scale model training and fine-tuning, GPU optimization and hardware constraints, applied mathematics for model reformulation, stream processing architecture, production code and data pipeline development, model interpretability.

Preferred skills

Efficient sequence architectures, large-scale streaming systems, model interpretability.

Technologies

GPUs, stream processing frameworks, production ML deployment stacks.

Responsibilities

Design and build custom models for high-throughput stream processing; optimize models for hardware/software constraints; build training data pipelines; integrate models into production with focus on latency and cost; plan model improvement roadmaps; build agentic layers for validation; create interpretability tools; maintain model services and infrastructure.

Seniority

Senior, hands-on IC

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