Senior Software Development Engineer

## Senior Software Development Engineer Apply:
Washington - Seattle Campus:
Full time:
Posted Yesterday:
End Date:
November 17, 2026 (30+ days left to apply):
R-110316

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 Team:
** Our Technology Team partners with teams across Expedia Group to create innovative products, services, and tools that 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.  Lodging Connectivity is the API- and software-driven backbone of our supply business, simplifying connectivity across lodging products through external-facing APIs and platforms that enable partners to acquire, optimize, and maintain lodging supply.

We are an AI-forward team: we use AI across how we design, build, test, and operate software, and we are building AI-enabled capabilities into our services. In this role, you will deliver traveler, partner, and company value with stable architecture, high quality, and operational excellence, and you will help set the bar for how our team uses AI responsibly and effectively.
** In this role, you will:*
* * Design, build, and evolve reliable backend services, including system design (LLD), API design, and data modeling for scalable, secure, and maintainable solutions.
* Use AI coding assistants and agentic workflows as part of your daily engineering practice (design exploration, code generation, test authoring, refactoring, code review, debugging, and incident triage), and critically validate the output for correctness, security, and maintainability.
* Design and ship AI/ML-enabled capabilities in backend services, such as LLM-powered features, agent and tool integrations, and retrieval or automation workflows, with attention to latency, cost, quality evaluation, and failure modes.
* Define and promote team practices for responsible AI adoption: prompt and context management, evaluation and guardrails, data privacy, and compliance with EG security policies.
* Implement high-quality production code with an emphasis on automated testing, observability, performance, and operational excellence.
* Collaborate with product, design, and partner engineering teams to translate customer and business requirements into robust backend solutions, reusable service integrations, and well-structured data flows.
* Own the end-to-end lifecycle of services and features: development, testing, deployment, monitoring, troubleshooting, and incident resolution.
* Use data, metrics, experimentation, and analytics to prioritize work, validate hypotheses, and measure the impact of both product changes and AI-driven improvements to engineering productivity.
* Mentor engineers on effective, safe use of AI tooling and raise the team’s overall velocity and quality.  
** Minimum Qualifications****:*
* * Bachelor’s degree in Computer Science or a related technical field, or equivalent practical experience.
*…