Principal Engineer – Bayesian, Large Foundational Systems, Distributional Reinforcement Learning

Airbnb

Principal Engineer at Airbnb, leading AI/ML research in Bayesian and Reinforcement Learning. Innovating AI intelligence models for enhanced personalization and decision-making in a global ecosystem.

Posted 5/21/2026full-timeRemote • 🇺🇸 United StatesSeniorLead💰 $296,000 - $370,000 per yearWebsite

Tech Stack

Tools & technologies

JavaKafkaPythonPyTorchScalaSparkTensorflow

About the role

Key responsibilities & impact

Lead groundbreaking applied research in Bayesian systems, distributional reinforcement learning, and multi-modal architectures to drive novel advances in AI and Foundational Intelligence.
Bridge the gap between theoretical AI/ML advancements and real-world production systems.
Define and drive the architecture of large-scale Bayesian Framework-based AI systems.
Develop multi-pass sharded Bayesian + Discriminative/Generative single to multi agent systems for scale and efficiency.
Build and refine Bayesian or Markovian Graph chains to incorporate uncertainty estimation, adaptive decision-making, and probabilistic reasoning.
Lead technical direction and strategy for AI/ML systems.

Requirements

What you’ll need

Bachelor’s degree in Computer Science, Mathematics, or a related technical field (or equivalent practical experience).
15+ years of technical experience in Applied Machine Learning, including producing code and deploying production systems.
Strong programming skills in Python, Scala, Java, or C++, with expertise in AI/ML frameworks (e.g., TensorFlow, PyTorch).
Proven experience with Bayesian Neural Networks, Bayesian Learning, and Reinforcement Learning.
Strong math background in probability, statistics, and optimization.
Experience with building scalable AI/ML systems using technologies like Spark, Kafka, and distributed architectures.
Familiarity with advanced ML techniques, including Mixture of Models, Ensemble Techniques, multitask learning, and sharded architectures.

Benefits

Comp & perks

This role may also be eligible for bonus, equity, benefits, and Employee Travel Credits.

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Bayesian systemsdistributional reinforcement learningmulti-modal architecturesBayesian FrameworkBayesian Neural NetworksReinforcement Learningprobabilitystatisticsoptimizationmultitask learning

Soft Skills

leadershiptechnical directionstrategy

Certifications

Bachelor’s degree in Computer ScienceBachelor’s degree in Mathematics