Sr. Full-Stack Engineer; Java​/Kotlin, React.js

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.

Our Technology Team partners with teams across Expedia Group 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 Senior Software Engineer role sits on the Universal Messaging Platform (UMP) team—Expedia Group’s core communications platform. UMP powers high‑scale, reliable delivery across Email, SMS, mobile push, in‑app notifications, and emerging channels, enabling timely engagement with millions of travelers worldwide. In this role, you will build and operate mission‑critical systems that directly improve traveler experience, strengthen loyalty, and drive business growth at global scale.

• Deliver and own high‑quality platform services that are reliable, scalable, and easy to consume, consistently balancing delivery speed with long‑term maintainability.
• Research and recommend frameworks and architectural/code design patterns.
• Elevate team standards through technical leadership, mentoring other engineers, and championing best practices in software design, testing, and observability.
• Drive operational excellence by advocating for resiliency and scalability, establishing SLAs, and guiding the design of easily testable systems.
• Translate business needs into technical solutions, collaborating with stakeholders to solve complex problems, and reporting project status to leadership.

• 8+ years of professional software engineering experience, with a strong focus on backend development.
• Expert proficiency in Java and experience with backend frameworks (e.g., Java, Kotlin, and similar technologies).
• Strong experience building distributed systems, RESTful APIs, and microservices.
• Experience with cloud platforms (AWS, GCP, or Azure) and containerization technologies (Docker, Kubernetes).
• Familiarity with CI/CD pipelines, infrastructure as code, and Dev Ops practices.

• Strong communication skills and a highly effective collaborator, providing details and supporting your ideas with data where applicable.
• Experience building a platform or shared services used by multiple teams.
• Strong technical acumen and commitment to the quality of engineering work and continuous improvement.
• Experience working in large‑scale, high‑traffic systems.
• Proven ability to mentor junior and mid‑level engineers and contribute to a strong engineering culture.

The total cash range for this position in Seattle is $ to $. Employees in this role have the potential to increase their pay up to $, 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…