Software Development Engineer III - Full Stack

Expedia Group•Seattle, WA

1d•Hybrid

About The Position

This role is for a Full Stack Software Engineer working on Expedia’s critical production checkout applications. The primary mission is to ensure Expedia Checkout is consistently fast, available, scalable, and robust enough to handle unparalleled demand. The successful candidate will be deeply involved in solving complex problems inherent in systems operating at scale, a challenge few engineers experience. This position requires strong analytical and troubleshooting skills, proficiency in coding and systems design, and solid interpersonal abilities, coupled with a desire to tackle intricate scaling issues. The ideal candidate is collaborative, creative, thrives in a dynamic and agile environment, adapts readily to new technologies, and enjoys working on complex problems. The role contributes to innovating web applications that millions of travelers use to plan, book, and experience memorable trips.

Requirements

Bachelor’s degree in Computer Science or a related technical field; or Equivalent related professional experience.
5+ years of relevant professional experience.
Professional software development experience building and maintaining services or applications, with ownership of features or services in production environments.
Proficiency in at least one modern programming language and core computer science fundamentals (data structures, algorithms, design, and problem solving), including experience with system design (LLD), API design, and data modeling.
Experience owning the full software development lifecycle for services or applications, including design, implementation, code reviews, testing, deployment, and monitoring, including familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products at a foundational level.

Nice To Haves

Full-stack engineer with proficiency in JavaScript, TypeScript, React, Java/Kotlin, and GraphQL.
Experience maintaining and operating at least four software projects or products in production environments, including bug fixing, troubleshooting, monitoring, and operational support.
Experience selecting technologies to solve business problems and understanding trade‑offs between languages and platforms.
Experience creating APIs consumed across teams or business units.
Solid understanding of how projects and teams interact with other teams and align to business needs.
Experience testing, monitoring, debugging, and fixing issues within defined SLAs.
Experience with AI-enabled software development workflows.

Responsibilities

Design, implement, and maintain robust, secure, and scalable services and applications, including system design (LLD), API design, and data modeling to support business-critical capabilities across multiple domains.
Write clean, reliable, and well-tested code, applying sound engineering principles, design patterns, and code review practices to improve quality, performance, and maintainability for complex systems.
Own end-to-end delivery of features and services, from technical design and implementation through deployment, monitoring, and iteration, ensuring high availability and operational excellence.
Diagnose and resolve complex production issues, perform root cause analysis, and drive long-term improvements in reliability, observability, and resilience across services and dependencies.
Collaborate with cross-functional partners, contributing technical expertise to product discovery, backlog prioritization, and data-driven decision making while ensuring solutions are reusable and fungible across multiple domains.
Safely integrate and operate AI/ML‑enabled solutions that improve outcomes, including familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products.