Senior Software Development Engineer

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 TeamExpedia 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.This Senior Software Developer role is part of the BEX Product team which sits within our Technology division. The team delivers end-to-end Brand Expedia experiences across Home, Attach, and Trip Management, with a focus on creating differentiated lodging experiences and supporting travelers, particularly families and One Key members. In this role, you will design, develop, and maintain high-quality software solutions that empower travel growth and enhance user experiences.What you will doDesign, build, and evolve full-stack products and services, contributing to system design, API design, data modeling, user interfaces, and technical implementation.Develop high-quality production software using appropriate frontend and backend technologies, with an emphasis on maintainability, performance, accessibility, security, and automated testing.Translate customer, product, and design requirements into intuitive traveler experiences and resilient service integrations across the Trips Experience domain.Own features and services through the full lifecycle: technical design, implementation, testing, deployment, monitoring, troubleshooting, and continuous improvement.Collaborate with product managers, designers, data partners, and engineers across Brand Expedia to clarify problems, evaluate trade-offs, and deliver measurable outcomes.Lead technical discussions and design reviews, establish practical engineering standards, and make thoughtful decisions in ambiguous or evolving problem spaces.Improve system reliability and operational excellence through observability, performance tuning, automation, incident response, and post-incident learning.Use experimentation, product analytics, and operational metrics to validate hypotheses, prioritize work, and measure the impact of delivered experiences.Contribute to a culture of engineering excellence through code reviews, documentation, knowledge sharing, mentoring, and inclusive collaboration.Use AI-assisted engineering tools responsibly to accelerate design exploration, implementation, testing, debugging, and operational work while validating output for quality, security, privacy, and maintainability.Minimum QualificationsBachelor’s degree in Computer Science, Engineering, or a related technical field; or equivalent related professional experience.8+ years of professional software development experience building and operating production software in a team environment, including full-stack or comparable end-to-end product engineering experience.Strong proficiency in at least one modern programming language and hands-on experience with both backend service development and modern web application development.Demonstrated ownership of services or product features across system design, implementation, automated testing, deployment, monitoring, and operational support.Strong software engineering fundamentals, including data structures, algorithms, system design, API design, data modeling, distributed systems, and software quality practices.Preferred QualificationsExperience designing and evolving multi-service, full-stack architectures with well-structured APIs, reusable components, reliable data flows, and clear integration boundaries.Demonstrated success improving customer-facing or high-traffic systems through performance tuning, resilience engineering, accessibility improvements, and reliability hardening.Strong operational-excellence practices, including instrumentation, logging, metrics, alerting, SLOs, on-call participation, incident response, and post-incident analysis.Experience with experimentation, feature flags, A/B testing, product analytics, or other data-informed methods for guiding technical and product decisions.Experience applying AI/ML capabilities or AI-assisted development workflows responsibly, including evaluation, privacy and security considerations, guardrails, and measurement of quality or productivity impact.The total cash range for this position in Seattle is $184,500.00 to $258,000.00. Employees in this role have the potential to increase their pay up to $295,000.00, which is the top of the range, based on ongoing, demonstrated, and sustained performance in the role. Starting pay for this role will vary based on multiple factors, including location, available budget, and an individual’s knowledge, skills, and experience. Pay ranges may be modified in the future.Benefits and perksExpedia Group offers benefits and perks designed to support employees and their families, including medical, dental, and vision coverage, paid time off, an Employee Assistance Program, wellness and travel reimbursement, travel discounts, and International Airlines Travel Agent Network (IATAN) membership. Learn more about life at Expedia Group at .Accommodation requestsExpedia Group is committed to providing an inclusive and accessible recruiting experience. If you need an accommodation or adjustment due to a disability during the application or recruiting process, please submit a request at .About Expedia GroupExpedia Group includes three flagship consumer brands - Expedia, Hotels.com, and Vrbo - along with a leading B2B travel business and travel advertising offerings. Across our brands and business, we help travelers explore the world with confidence and ease.Important noticeEmployment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never share sensitive personal information unless you are confident of the recipient. Expedia Group does not extend job offers via email or messaging tools to individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official place to find and apply for roles is .Equal OpportunityExpedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, or any other characteristic protected by law. This employer participates in E-Verify. The employer will provide the Social Security Administration (SSA) and, if necessary, the Department of Homeland Security (DHS) with information from each new employee's I-9 to confirm work authorization.SummaryLocation: Washington - Seattle CampusType: Full time