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# Software Development Engineer III - Full Stack

- **Company:** Expedia Inc.
- **Location:** Seattle, WA, United States
- **Experience:** Expert
- **Salary:** $146,000.0 - $233,500.0
- **Contract:** Permanent contract
- **Skills:** A/B Testing, Application Programming Interfaces (APIs), Artificial Intelligence, Automation of Tests, Data Structures, Machine Learning, Performance Tuning, Reliability Engineering, Service-Oriented Architecture, Software Engineering, Backend, Information Technology, Data Analytics, Web Technologies, Api Design
- **Published:** August 3, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=c425cda523e28a54

## About the Role

* Bachelor's degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience in software development.
 * 5+ years of professional experience building and operating production software services and full-stack applications (frontend and backend) within a team environment.
 * Proven ownership of services or components, including responsibility for design, implementation, quality, deployment, and operational health within a product or domain area.
 * Proficiency in core software engineering fundamentals, including data structures, algorithms, system design (LLD), API design, and data modeling, with experience applying these in real systems.
 * Hands-on experience with modern web technologies, frameworks, and service architectures, and familiarity with using AI-driven tools or workflows to enhance developer productivity or product capabilities.

Preferred Qualifications:

 * Experience designing and evolving multi-service or multi-component architectures, including well-structured APIs, data models, and integration patterns across systems.
 * Demonstrated track record driving technical improvements at scale, such as performance tuning, resilience hardening, or reliability engineering for high-traffic services and user interfaces.
 * Strong focus on operational excellence, including instrumentation, observability, alerting, and participation in on-call or incident response to improve long-term service health.
 * Ability to leverage experimentation, A/B testing, or analytics to make informed technical and product decisions and to validate the impact of delivered features.
 * Experience integrating or extending AI/ML-enabled capabilities in applications or services, including responsible use of AI-driven components in full-stack solutions and guiding teams on effective, safe adoption of AI tooling.

## Description

* Implement high-quality frontend and backend code, ensuring maintainability, observability, and operational excellence across multiple services and domains.
 * Collaborate with product, design, and partner engineering teams to translate business and customer requirements into robust technical solutions that can be reused across use cases.
 * Own and improve the end-to-end lifecycle of services and features, including development, automated testing, deployment, monitoring, and incident resolution.
 * Apply data-driven approaches to prioritize work, validate hypotheses, and continuously optimize system performance, reliability, and user experience.
 * 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.


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