Software Development Engineer III - Loyalty Job Seattle area,Washington USA,Software Development

At Expedia Group, we help travelers explore the world, one journey at a time. As a global 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.

Introduction

To The Team

Expedia Technology teams partner with our Product teams to create innovative products, services, and tools to deliver high quality experiences for travelers, partners, and our employees. A singular technology platform powered by data and machine learning provides secure, differentiated, and personalized experiences that drive loyalty and traveler satisfaction.

The Loyalty Engineering organization powers continuous engagement, re-engagement, and (re) acquisition for travelers worldwide. We build the systems that create a durable growth flywheel for Expedia, deepening traveler relationships while driving measurable business impact across brands and markets. In this role, you will contribute to the AI empowered Loyalty charter, developing and delivering next generation, intelligent engagement experiences powered by modern AI and agentic systems.

You will contribute to system design across multiple distributed engineering teams, partnering closely with Product, Data Science, and platform leaders to build scalable, reliable, and innovative solutions.

In This Role, You Will

Design, develop, test, deploy, and maintain full-stack software across front-end and back-end components, delivering reliable outcomes for customers and the business.
Apply software engineering practices, including low-level system design, API design, data modeling, code review, testing, debugging, and continuous improvement.
Own technical solutions spanning multiple services or a defined technical domain, collaborating across teams to deliver cohesive, scalable capabilities.
Translate product and business requirements into maintainable technical solutions, using data and operational feedback to guide decisions.
Own complex full stack features from technical design through implementation, testing, deployment, and operational support, with a front end leaning bias while remaining equally comfortable owning backend services and data models when needed.
Safely integrate and operate AI/ML-enabled solutions that improve outcomes, applying foundational AI/ML concepts to real-world products and workflows.
Contribute technical expertise across domains, strengthen engineering practices, and help teams deliver high-quality software with appropriate operational rigor.

Minimum Qualifications

Bachelor's degree in Computer Science or a related technical field; or Equivalent related professional experience.
5+ years of relevant professional experience.
Experience designing, building, testing, deploying, and operating production software across full-stack applications.
Experience owning technical solutions spanning multiple services or a defined technical domain, with proficiency in low-level system design, API design, data modeling, testing, debugging, and version control.
Familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products.

Preferred Qualifications

Experience delivering full-stack systems at scale with strong reliability, maintainability, performance, and observability.
Demonstrated ability to lead architecture and technical decisions across services while balancing customer needs, engineering quality, and delivery outcomes.
Experience using operational metrics, experimentation, and production insights to improve system and product performance.
Strong front end engineering depth in React and Type Script, including performance optimization for latency sensitive, high traffic consumer surfaces, paired with working proficiency in backend services using Java or Node in cloud native environments.
Experience safely integrating AI/ML capabilities into production software, including evaluating their effectiveness, reliability, and operational impact.
Advanced experience applying AI-assisted…