Machine Learning Scientist II

Traveltechessentialist; Seattle (WA); On-site; USD 179,000; Full time

Job summary

A leading travel technology company is seeking a Machine Learning Scientist II to enhance customer experiences through advanced machine learning technologies. In this role, you'll develop algorithms to improve post-booking recommendations and customer service experiences. Applicants should have a PhD or MS in a quantitative field and at least 1 year of industry experience. This position offers a competitive salary range of $112,000 to $156,500, plus additional potential earnings based on performance.

Benefits

Medical/Dental/Vision Benefits

Paid Time Off

Travel Discounts

Qualifications

• PhD or MS in a quantitative field (e.g., Computer Science, Economics, Statistics, Physics) or equivalent experience.
• 1+ years of hands-on industry experience building and deploying machine learning models.
• Strong foundation in Machine Learning Theory and core Statistical concepts.

Responsibilities

• Implement, test, and validate machine learning models, taking features from concept to production.
• Design and analyze rigorous A/B tests to validate models and quantify business impact.
• Partner effectively with senior scientists, engineers, and product managers.

Skills

Machine Learning Theory

Python

SQL

A/B Testing

Data Analysis

Education

PhD or MS in a quantitative field

Tools

scikit-learn

pandas

Job description

Machine Learning Scientist II

• United States - Washington - Seattle
• Technology
• Full-Time Regular
• 10/09/2025
• ID # R-98431

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.

Machine Learning Scientist II - Post Booking Experiences

Introduction to the Team:

Are you passionate about using machine learning to improve Customer Experience? Would you like to work in the fast-paced, competitive, customer-focused, and data-rich world of online travel? Our Machine Learning and Data Science team are growing! We are looking to hire researchers and data scientists interested in breaking new ground to tackle some of the most complex customer experience problems in the travel domain. The focus of your job will be on developing state-of-the-art machine learning algorithms to power and enhance the customer experience across highly complex post-booking recommendations, customer service, and trip management use cases.

This is your opportunity to build the core algorithms that help Expedia Group's Post Booking organization bring context and intelligence to every step of the traveler journey and redefine what service excellence in travel can be. We are looking for a hands-on scientist who is passionate about applying machine learning to complex prediction and optimization problems that drive an ecosystem that anticipates traveler needs, personalizes dynamic add-ons and upsells, and improves service experiences, making travel more seamless for millions of customers and partners worldwide.

In this role you will:

• Implement & Validate ML Models: you will implement, test, and validate machine learning models, taking features from concept to production.
• Test, Learn, and Iterate: Design and analyze rigorous A/B tests to validate your models and quantify their business impact. Proactively monitor model performance and iterate to improve it.
• Collaborate and Learn: Partner effectively with senior scientists, engineers, and product managers to understand requirements and contribute to solutions. You will be expected to continuously learn and develop a deeper understanding of our data, infrastructure, and problem space.

Minimum Qualifications:

• PhD or MS in a quantitative field (e.g., Computer Science, Economics, Statistics, Physics) or equivalent experience
• 1+ years of hands-on industry experience building and deploying machine learning models to solve real-world problems.
• Strong Foundation in Machine Learning Theory and core Statistical concepts.
• Proficiency in Python and its data science ecosystem (e.g., scikit-learn, pandas).
• Experiencing working with tools needed to measure impact including experimental Design (A/B Testing).
• Data Querying experience with SQL is essential.

Preferred Qualifications:

• Domain knowledge in customer service, recommendation systems, operational applications of ML, and/or e-commerce
• Experience building and deploying models using GenAI/LLM technologies

The total cash range for this position in Seattle is $112,000.00 to $156,500.00. Employees in this role have the potential to increase their pay up to $179,000.00, which is the top of the range, based on ongoing, demonstrated, and sustained performance in the role.

Starting pay for this role will vary based on multiple factors, including location, available budget, and an individual’s knowledge, skills, and experience. Pay ranges may be modified in the future.

Expedia Group is proud to offer a wide range of benefits to support employees and their families, including medical/dental/vision, paid time off, and an Employee Assistance Program. To fuel each employee’s passion for travel, we offer a wellness & travel reimbursement, travel discounts, and an International Airlines Travel Agent (IATAN) membership. View our full list of benefits.

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.

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, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. This employer participates in E-Verify. The employer will provide the Social Security Administration (SSA) and, if necessary, the Department of Homeland Security (DHS) with information from each new employee's I-9 to confirm work authorization.