Senior Staff Machine Learning Engineer, Post Training

Airbnb

Senior Machine Learning Engineer at Airbnb responsible for fine-tuning AI models and driving innovations in customer support. Collaborating with cross-functional teams to enhance users' travel experience.

Posted 5/5/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $248,000 - $310,000 per yearWebsite

Tech Stack

Tools & technologies

PythonPyTorch

About the role

Key responsibilities & impact

Work with large scale structured and unstructured data; explore, experiment, build and continuously improve foundation models for Airbnb product, business and operational use cases.
Create a multi-year tech roadmap that enables our team to stay on the leading edge of the rapidly evolving AI landscape and leverage the best in class technologies to deliver customer benefits.
Continuously evaluate recent and upcoming large foundational models, ensuring the selection and refinement of the highest quality models for enhanced performance and efficiency.
Hands-on prototype, develop and productionize LLM models and pipelines at scale, including both batch and real-time use cases.
Drive key AI architectural decisions for products, and contribute to Airbnb’s ML platform architecture and strategy.

Requirements

What you’ll need

PhD in Computer Science, Machine Learning, Mathematics, Statistics, or related technical field.
10+ years of experience with developing machine learning models and products at scale from inception to business impact.
Programming experience in Python and hands-on experience with frameworks such as PyTorch.
Proven record of training, fine tuning, optimizing models and inference run-time.
Post-training experience in areas like data processing for fine-tuning; responsible LLMs; LLM alignment; reinforcement learning; efficient training and inference; language model evaluation; and/or multilingual and multimodal modeling.
Or specialized experience in runtime optimizations, model quantization, compression, on-device inference, GPU inference, pytorch, kernel development.

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

machine learninglarge language modelsdata processingmodel optimizationmodel fine-tuninginference run-timereinforcement learningmodel quantizationon-device inferenceGPU inference

Certifications

PhD in Computer SciencePhD in Machine LearningPhD in MathematicsPhD in Statistics