Software Development Engineer II - Full-Stack - Front-End Focus

Expedia Group•Seattle, WA

3d•$119,000 - $190,500•Hybrid

About The Position

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 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. We are the Strategic Partnerships & Affiliates team in the Expedia Product & Technology division of Expedia Group. We are building the next-generation, scalable B2B partnership platform that will power hundreds of thousands of demand partners across the industry, ranging from big businesses and enterprises to small bloggers, micro influencers, and creators, in helping them recommend Expedia Group brands to their audiences and in the process grow their businesses. We aim to redefine the travel partnerships sector by building innovative partner tools and solutions that incorporate the new ways in which today’s travelers discover and shop for travel products. To do this, we need technically passionate engineers with a strong frontend foundation, an entrepreneurial approach, and a love of solving complex problems. This role is primarily focused on building modern, scalable user experiences using React.js and TypeScript, while also contributing to backend services and APIs in Java.

Requirements

Strong proficiency in JavaScript, TypeScript, React.js, GraphQL, and REST APIs.
Working proficiency in Java or Kotlin for backend development and service integration
Bachelor’s degree in a technical field, or equivalent related professional experience
2+ years of software development experience building and supporting production systems and services
Experience building frontend applications in a modern web stack, with an emphasis on component-based architecture, state management, performance, and maintainability
Experience owning components or services within a team, with responsibility for implementation, testing, deployment, and operational support
Proficiency in software engineering fundamentals, including coding, data structures, algorithms, debugging, and version control, with working knowledge of system design, low-level design, API design, and data modeling
Experience developing reliable, scalable applications and working across more than one technical area or service, with the ability to diagnose issues and deliver maintainable solutions

Nice To Haves

Experience building software for advertising technology, marketplace, or other high-scale distributed platforms
Demonstrated strength in frontend engineering, including building responsive, accessible, and high-performing user interfaces with React.js and TypeScript
Experience contributing to architecture or design discussions for frontend applications, services, APIs, and data models within a team-owned domain
Demonstrated ability to improve service quality through observability, automation, performance tuning, and operational excellence practices
Familiarity with AI-driven systems, tools, or workflows, and experience applying AI/ML concepts in production-oriented software environments
Experience using data and metrics to inform engineering decisions, prioritize improvements, and measure the impact of technical solutions

Responsibilities

Design, build, test, and maintain scalable frontend applications and user-facing platform capabilities for advertising technology products and services, with a primary focus on React.js and TypeScript
Develop intuitive, performant, and maintainable web experiences that support a wide range of B2B partners, from large enterprises to creators and small businesses
Contribute to backend services and APIs using Java or Kotlin, supporting frontend functionality and end-to-end product delivery
Participate in system design, low-level design, API design, and data modeling to deliver reliable, extensible solutions across frontend and backend components
Collaborate with engineers, product, and partner teams to translate business needs into technical solutions that improve advertising platform capabilities and customer outcomes
Own well-defined components and services, troubleshoot production issues, and improve operational health through monitoring, debugging, automation, and continuous improvement
Write high-quality, secure, and well-tested code, participate in code reviews, and follow engineering standards that support performance, scalability, accessibility, and resilience
Safely integrate and operate AI/ML-enabled solutions that improve outcomes, including familiarity with AI-driven systems, tools, or workflows, and apply AI/ML concepts to real-world products