Principal Data Scientist

Are you up for your next challenge where you can really flex your skills in Data Science and Machine Learning? Would you like to work in the fast-paced, traveller focused and data-rich world of travel technology, and power travel for millions of people?

If you are passionate in using Data Science and ML to build data powered products, tackle ambitious problems and are seeking a high-profile role in which you’ll be able to directly impact millions of our customers and partners around the world, this could be the role for you!

Our team focuses on Personalisation and Recommendations across all Expedia Group brands such as, and Vrbo.

We help millions of travellers worldwide having a more personalized experience by creating algorithms for Traveler Intent prediction and Customer Experience AI. We’re also responsible for Recommendations algorithms including property, destinations, car and activity, to help our travellers finding their dream holiday more quickly.

This key role involves building ML algorithms to solve high-impact, sophisticated problems using cutting-edge technology and approaches while working in a diverse team. You will also mentor the team and help ensure the timely delivery of key projects.

What you’ll do:

  • Build, deploy and optimise ML models for traveller intent prediction, customer experience AI, relevance and recommendations

  • Mentor and provide technical support to more junior members of the team

  • Work in close partnership with Product, Data and Technology teams to identify new opportunities and ensure that key projects that are carried out in the team are delivered in a timely fashion

  • Develop a deep understanding of our data and ML infrastructure and champion infrastructure development needs which will help the whole team work more effectively

  • Be a technical leader on use, adoption and implementation of personalization and recommendations algorithms

Who you are:

  • MSc or PhD degree in: ML or Computer Science, computer vision, mathematics, or a science field with strong data/ML component; or Equivalent related professional experience

  • 5+ years hands on experience with ML in production, building datasets, selecting and engineering features, building and optimizing algorithms

  • Experience in several of the following domains: Recommender Systems, Deep Learning, Learn-to-Rank, Regression, Classification, Clustering

  • Experience with ML packages such as TensorFlow, PyTorch, Keras, Python (scikit-learn, pandas, numpy, scipy, Matplotlib), Spark MLlib, etc

  • Real world experience with Internet scale data on Spark, Hadoop or similar platform highly preferred

  • Good data manipulation skills required including cleaning and managing data

  • Good programming practices, ability to write readable, fast code

  • Intellectual curiosity and desire to learn new things, techniques and technologies

Nice to have:

  • Knowledge of test design, implementation and evaluation, with website A/B testing experience a plus

  • Experience with data visualization tools and packages

Why join us:

Expedia Group recognizes our success is dependent on the success of our people. We are the world’s travel platform, made up of the most knowledgeable, passionate, and creative people in our business. Our brands recognize the power of travel to break down barriers and make people’s lives better - that responsibility inspires us to be the place where exceptional people want to do their best work, and to provide them the tools to do so.  

Whether you’re applying to work in engineering or customer support, marketing or lodging supply, at Expedia Group we act as one team, working towards a common goal; to bring the world within reach. We relentlessly strive for better, but not at the cost of the customer. We act with humility and optimism, respecting ideas big and small. We value diversity and voices of all volumes. We are a global organization but keep our feet on the ground so we can act fast and stay simple. Our teams also have the chance to give back on a local level and make a difference through our corporate social responsibility program, Expedia Cares.

If you have a hunger to make a difference with one of the most loved consumer brands in the world and to work in the dynamic travel industry, this is the job for you.

Our family of travel brands includes: Brand Expedia®,®, Expedia® Partner Solutions, Egencia®, trivago®, Vrbo®, Orbitz®, Travelocity®, Wotif®, ebookers®, CheapTickets®, Hotwire®, Expedia® Media Solutions,™, Expedia Local Expert®, Expedia® Cruise® and SilverRail Technologies, Inc. For more information, visit


About Expedia Group

Expedia Group (NASDAQ: EXPE) powers travel for everyone, everywhere through our global platform. Driven by the core belief that travel is a force for good, we help people experience the world in new ways and build lasting connections. We provide industry-leading technology solutions to fuel partner growth and success, while facilitating memorable experiences for travelers. Expedia Group’s family of brands includes: Brand Expedia®,®, Expedia® Partner Solutions, Vrbo®, trivago®, Orbitz®, Travelocity®, Hotwire®, Wotif®, ebookers®, CheapTickets®, Expedia Group™ Media Solutions, Expedia Local Expert®,™, and Expedia Cruises™.

© 2021 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: 2029030-50

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.

This employer is a corporate member of myGwork – LGBTQ+ professionals, the business community for LGBTQ+ professionals, students, inclusive employers & anyone who believes in workplace equality.

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