Expedia

Senior Machine Learning Scientist - Agentic Experience

Expedia
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1 day ago
Austin, TX, USA +2 moreSenior
H1B sponsor

Responsibilities

  • Design, build, and evaluate multi-step agentic AI systems with planning, tool use, memory, and multi-agent collaboration.
  • Research and implement agentic architectures including ReAct, reflection loops, chain-of-thought prompting, and tool-augmented reasoning.
  • Develop and maintain agent orchestration frameworks for task decomposition, delegation, failure handling, and recovery.
  • Integrate large language models with external tools, APIs, databases, and code execution environments.
  • Define and own evaluation frameworks measuring task success, reliability, latency, cost, and safety.
  • Collaborate with product, engineering, and research teams to deliver production-grade agentic solutions.
  • Identify and mitigate prompt injection, unintended actions, hallucination, and unsafe tool-use risks.
  • Mentor junior machine learning engineers and scientists.

Requirements

  • 8+ years of related industry experience.
  • Demonstrated experience designing and deploying agentic or multi-step AI systems in production or research settings.
  • Strong proficiency in Python and at least one of PyTorch, TensorFlow, or JAX.
  • Experience with LLM APIs and orchestration libraries such as LangChain or LlamaIndex.
  • Experience integrating LLMs with external tools, APIs, and structured data sources.
  • Understanding of prompt engineering techniques including chain-of-thought, few-shot prompting, and structured output generation.
  • Experience defining and running ML evaluation frameworks, including offline benchmarking and production monitoring.
  • Preferred: PhD, MS, or BS in Computer Science, Machine Learning, Statistics, Engineering, or a related field, or equivalent professional experience.
  • Preferred: travel or e-commerce industry experience, top-tier ML publications, patents, open-source ML contributions, or experience taking models from prototype to production.

Benefits

  • Medical, dental, and vision coverage.
  • Paid time off and an Employee Assistance Program.
  • Wellness and travel reimbursement.
  • Travel discounts and International Airlines Travel Agent Network membership.

Tech Stack

PythonPyTorchTensorFlow

Categories

Expedia

About Expedia

10,000+ employees

Expedia Group builds a global online travel marketplace where consumers book flights, hotels, vacation rentals, cars, and activities, and partners distribute and market inventory across its platform. It monetizes through commissions, merchant/agency models, and advertising via brands including Expedia, Hotels.com, and Vrbo. Founded in 1996 and headquartered in Seattle, the public company (NASDAQ: EXPE) serves travelers and partners in more than 70 countries with B2C, B2B, and ad tech offerings.

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