Software Development Engineer III - Full-Stack Developer

Expedia•Seattle, WA

79d•Hybrid

About The Position

The Software Development Engineer III - Full-Stack Developer role is part of the Offers Experience Merchandising Team within Expedia Group's Product & Technology division. This team focuses on integrating promotional badges, discount messaging, and shopping banners into customer shopping experiences, including search results and other highly visible areas. The role involves working on high-visibility merchandising experiences and capabilities that help customers discover and understand deals. You will use AI-powered tools to develop scalable systems that integrate with shopping and experience APIs to deliver configurable, high-visibility features like promotional messaging and price display. Collaboration with Product, Design, and cross-functional engineering teams is key to creating compelling merchandising experiences that drive customer engagement.

Requirements

Bachelor’s degree in Computer Science or a related technical field; or Equivalent related professional experience.
5+ years of relevant professional experience.
Proven experience designing and implementing backend services and RESTful or GraphQL APIs, including sound data modeling and low-level design, plus building responsive, modern web frontends.
Demonstrated ability to own the health, reliability, and performance of services or applications you build, including monitoring, incident participation, and iterative improvement based on data.
Proficiency in at least one modern programming language and associated frameworks across the stack, along with familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products.

Nice To Haves

Demonstrated ability to leverage AI productivity tools (e.g., Claude, Copilot, or similar) to accelerate development, improve code quality, and drive engineering efficiency.
Advanced backend development skills using Kotlin, including designing and maintaining reliable, high‑performance GraphQL services.
Experience building Web UI using TypeScript/React, with strong proficiency in component patterns.
Track record of improving operational excellence through observability, performance optimization, and resilient design for high-traffic, customer-facing applications.
Demonstrated leadership in shaping technical direction for a team or domain, influencing design decisions, reviewing critical code and architecture, and mentoring engineers across the stack.
Familiarity with experimentation, A/B testing, and data-driven decision making to guide product and technical choices, including evaluating the impact of AI-driven features at scale, and experience applying AI techniques to improve full-stack product experiences.

Responsibilities

Design, build, and evolve robust full-stack services and applications, including system design, low-level design, API design, and data modeling to support resilient, high-traffic travel experiences across multiple domains.
Own end-to-end delivery of complex features and services, from technical design and implementation through testing, deployment, monitoring, and ongoing optimization in a cloud-based environment.
Collaborate with product, design, and peer engineering teams to translate business and customer requirements into scalable technical solutions, ensuring high usability, performance, and reliability.
Drive engineering excellence by setting standards for code quality, automated testing, observability, security, and operational readiness, and by mentoring other engineers in full-stack best practices.
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.
Contribute as a fungible full-stack engineer across multiple product and service areas, selecting appropriate technologies and patterns to solve problems efficiently while managing technical debt.