Senior Machine Learning Engineer

Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success.

Why Join Us?

To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win.

We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We’re building a more open world. Join us.

Introduction to the team:

The Distribution and Supply team at Expedia Group is revolutionizing how people search, book, and experience travel. We power the systems behind Pricing, Inventory, Content, and Marketplace Trust & Safety, ensuring travelers find the best deals and most reliable experiences across hotels, vacation rentals, flights, cars, packages, and cruises. Our platforms process trillions of events globally, connecting hundreds of millions of travelers across Expedia Group’s brands.

As a Senior Machine Learning Engineer, you’ll design and scale the intelligent systems that power Expedia’s global travel marketplace. You’ll work across Content, Pricing & Availability, Trust and Safety domains operating at massive scale and complexity.

Our Content systems manage hundreds of millions of digital assets—images, text, videos, and attributes—that bring destinations and experiences to life. You’ll use machine learning to automate content enrichment, enhance quality, and deliver personalized travel recommendations.

In Pricing & Availability, you’ll build models that optimize real-time pricing and inventory for hotels, rentals, and vehicles—processing millions of products and prices for users per second. Your work ensures travelers see the most accurate, competitive, and relevant prices worldwide.

Within Trust and Safety, you’ll develop models that uphold trust and fairness across Expedia’s two-sided ecosystem, detecting anomalies, mitigating fraud, and supporting partners in delivering high-quality traveler experiences.

If you’re passionate about applying machine learning to complex, high-scale systems that shape how the world travels, join us and help define the future of travel technology at Expedia Group.

In this role, you will:

• Own end-to-end development of distributed services, including system design, APIs, and data models.

  
  
  

• Lead delivery across the full SDLC, ensuring high standards for quality, performance, and reliability.

  
  
  

• Drive technical direction and engineering best practices, including observability, testing, and operational excellence.

  
  
  

• Partner with Product, Data Science, and ML teams to integrate ML models into scalable, production-grade systems.

  
  
  

• Support ML-enabled workflows (e.g., feature pipelines, batch/real-time processing) and ensure safe, reliable model deployment.

  
  
  

• Improve system reliability through monitoring, automation, and continuous improvement.

  
  
  

• Mentor engineers and elevate team-wide engineering practices.

  
  
  

Minimum Qualifications:

• 8+ years of software engineering experience with ownership of scalable, distributed systems.

  
  
  

• Strong system design, API development, and microservices experience.

  
  
  

• Proficiency in Java, Scala, or Python.

  
  
  

• Experience with CI/CD, testing, and production operations.

  
  
  

• Working knowledge of ML concepts and experience integrating ML components into production systems.

  
  
  

Preferred Qualifications:

• Experience with large-scale systems, big data technologies (e.g., Spark), and cloud platforms (e.g., AWS).

  
  
  

• Familiarity with ML platforms (e.g., SageMaker, Databricks) and real-time or batch data processing.

  
  
  

• Proven technical leadership and ability to influence engineering best practices.

  
  
  

Accommodation requests

If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request.

We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award-winning culture by organizations like Forbes, TIME, Disability:IN, and others.

Expedia Group's family of brands includes: Brand Expedia®, Hotels.com®, Expedia® Partner Solutions, Vrbo®, trivago®, Orbitz®, Travelocity®, Hotwire®, Wotif®, ebookers®, CheapTickets®, Expedia Group™ Media Solutions, Expedia Local Expert®, CarRentals.com™, and Expedia Cruises™. © 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: 2029030-50

Employment opportunities and job offers at Expedia Group will always come from Expedia Group’s Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you’re confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official website to find and apply for job openings at Expedia Group is careers.expediagroup.com/jobs.

Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.