At Expedia Group, we help travelers explore the world, one journey at a time. As a general travel company powered by passionate people, trusted partnerships, and leading technology, we connect travelers, partners, and advertisers through our consumer brands, B2B network, and travel advertising business.

Here, you'll do meaningful work that helps millions of people discover, book, and experience travel with more ease, confidence, and joy. Our five Behaviors-Traveler First, Think Big, Operate with Excellence, Ownership Mindset, and Succeed Together-help foster a supportive environment where people can grow their careers and have the flexibility, benefits, and support to do their best work. Join us and build for travelers everywhere.

Expedia Group B2B is the B2B arm of Expedia Group. We bring Expedia Group’s innovative technology and distribution solutions to partners across the world. These businesses include global financial institutions, corporate managed travel, offline travel agents, global travel suppliers (like major airlines) and many more …

In This Role, You Will




- Architect and own end-to-end ML infrastructure for training, deployment, and serving across batch and real-time environments.
- Define and drive technical standards for ML systems, including reliability, observability, and performance benchmarks.
- Lead the design and implementation of scalable data pipelines for large-scale feature engineering and model training.
- Own system performance and reliability across the ML platform, proactively identifying and resolving bottlenecks.
- Establish and evolve ML Ops practices, including CI/CD pipelines, monitoring, alerting, and A/B testing frameworks.
- Serve as a senior technical partner to ML scientists, leading the model development-to-production workflow for critical systems.
- Mentor junior and mid-level engineers, lead design and code reviews, and raise the technical bar across the team.
- Evaluate and integrate emerging technologies, contribute to

📌 Senior Machine Learning Engineer (Madrid)
🏢 Expedia Group
📍 Madrid