AI Research Engineer: Multimodal World Models for Observability

Impactribe Ltd; Paris; Hybrid; EUR 120,000 - 150,000; Full time

Benefits offered by this job

RSUs

ESPP

Collaboration across Datadog offices

Conference participation

Mentor/buddy program

Job summary

Datadog is seeking an AI Research Engineer to join the DAIR team in Paris. You will partner with researchers to turn ideas into scalable systems, building data pipelines, tooling, and evaluation frameworks for multimodal world models and autonomous agents.

You will run large-scale experiments, optimize for reliability, cost, and performance, and contribute to publications and open-source artifacts. Collaboration with product and engineering will harden prototypes into production services.

Qualifications

• Depth in distributed computing, RL Infra, and ML systems for training and inference at scale.
• Experience with Ray, Slurm, or similar frameworks is a plus.
• Proficient in Python; systems language (Rust/C++/Go) advantageous.

Responsibilities

• Build and operate multimodal data pipelines, training and evaluation infrastructure, benchmarks, and internal tooling.
• Implement models, run experiments at scale, and profile for reliability, performance, and cost.
• Build simulation environments and replay infrastructure for agent training and evaluation.
• Orchestrate distributed training and distributed RL with Ray, including scheduling, scaling, and failure recovery.
• Establish rigorous automated benchmarks and regression tests for world model predictions, agent performance, and simulation fidelity.
• Collaborate with Research Scientists, Product, and Engineering to integrate capabilities into Datadog's products and harden prototypes into reliable services.
• Contribute to research publications and open-source artifacts.

Skills

Distributed computing

RL Infra

ML systems

Python

Rust/C++/Go

PyTorch/JAX

Containerization

GPU acceleration

Megatron-LM/DeepSpeed

Communication

Tools

Ray

Slurm

Megatron-LM

Job description

Datadog is seeking an AI Research Engineer to join the DAIR team in Paris. You will partner with researchers to turn ideas into scalable systems, building data pipelines, tooling, and evaluation frameworks for multimodal world models and autonomous agents.

You will run large-scale experiments, optimize for reliability, cost, and performance, and contribute to publications and open-source artifacts. Collaboration with product and engineering will harden prototypes into production services.