Software Development Engineer II

Expedia Group • Seattle, WA

1d • $119,000 - $166,500

About The Position

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. 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. Introduction to the Team The full-stack web SDE-II position is part of Expedia’s post-booking Attach team, which builds and supports Web and Native App traveler experiences for all Expedia brands and partners to help travelers complete their trip with bundle offerings and product recommendations. In this role, you will design, build, and operate experiences across web, collaborating closely with Product, XD, and Program Management. You will contribute to the technical design and implementation of scalable services and user experiences in the traveler’s post-booking shopping journey, including applying AI- and agentic-driven capabilities to help travelers resolve their needs quickly and intuitively. As an SDE II, you will be a hands-on engineer, owning features end-to-end and helping to elevate engineering practices on the team through high-quality code, testing, and operational excellence.

Requirements

• Bachelor’s degree in Computer Science or a related technical field; or Equivalent related professional experience
• 2+ years of relevant professional experience
• Professional software development experience applying object-oriented or functional programming, data structures, and algorithms to build and maintain production services or applications
• Experience owning components or services through the full development lifecycle, including design, implementation, testing, deployment, and operational support
• Proficiency in system design at the component level, including API design, data modeling, and integration patterns within a service or small set of related services, including familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products

Nice To Haves

• 2+ years of full‑stack development experience across front‑end and back‑end services
• Recent hands-on experience building and operating Node.js + React-based applications in production
• Experience implementing and maintaining GraphQL-based backends
• Experience designing and implementing service APIs and data models consumed by multiple teams or products
• Experience running production services with monitoring, alerting, and on-call participation (e.g., pager rotation)

Responsibilities

• Design, develop, test, and deploy software solutions for defined services, applying solid coding practices and effective code reviews to maintain high quality and reliability
• Contribute to low-level system design, API design, and data modeling for services and components, ensuring solutions are scalable, maintainable, and aligned with architectural guidelines
• Troubleshoot and resolve issues across the software development lifecycle, including debugging, performance tuning, and improving operational stability of owned services
• Collaborate with peers, technical leads, and partner teams to break down requirements, estimate work, and deliver features that support multiple products or domains
• Safely integrate and operate AI/ML‑enabled solutions that improve outcomes, including using AI‑driven tools in development workflows and validating their outputs for correctness and safety
• Build familiarity with AI-driven systems, tools, or workflows and apply AI/ML concepts to real world products where appropriate, ensuring secure, compliant, and reliable adoption

Benefits

• 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
• medical/dental/vision
• paid time off
• Employee Assistance Program
• wellness & travel reimbursement
• travel discounts
• International Airlines Travel Agent (IATAN) membership

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level