Software Development Engineer II

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. This role sits in Expedia Group’s core C++ engineering group, responsible for building and optimizing high‑performance C++ systems that power millions of travel experiences worldwide. In this role, you will: Design, develop, test, and maintain services and components, with a focus on clean API design, robust data modeling, and reliable system behavior. Implement high‑quality, well‑tested C++ code; participate in code reviews; and help improve engineering standards, tooling, and best practices across the team. Collaborate closely with product, design, and partner engineering teams to deliver features end‑to‑end, balancing technical quality with delivery timelines. Work across multiple services or components within a domain, helping to diagnose production issues, improve performance, and contribute to operational excellence. Use telemetry and diagnostics (metrics, logs, tracing, profiling tools, experimentation frameworks) to understand system behavior, troubleshoot issues, and make data‑informed decisions. Collaborate with and learn from more senior engineers, incorporating feedback into designs and implementations to continually raise your technical bar. Minimum Qualifications Bachelor’s degree in Computer Science, Computer Engineering, or a related technical field; or equivalent related professional experience. 2+ years of relevant professional software engineering experience. Professional software development experience with ownership of services or components within a broader system. Proficiency in C++ is a must, with hands‑on experience in API design, data modeling, and system design. Experience building, testing, deploying, and operating backend or full‑stack services in production environments, including participation in on‑call or incident response rotations as appropriate. Solid foundation in algorithms, data structures, and object‑oriented design. Preferred Qualifications Experience building high‑performance, production‑grade C++ systems, with an interest in performance optimization, memory efficiency, concurrency, and reliability at scale. Strong foundation in systems design and API development, including designing maintainable interfaces, data models, and improving existing architectures within complex distributed environments. Demonstrated experience improving engineering quality through working with large codebases, refactoring legacy code, optimizing performance‑critical paths, strengthening observability, and advancing testing and operational practices. Experience using telemetry and diagnostics (metrics, logs, tracing, profiling tools, experimentation frameworks) to analyze system behavior, troubleshoot complex issues, and drive data‑informed technical decisions. Exposure to integrating intelligent or AI‑enabled capabilities into backend systems—such as inference APIs, personalization features, or AI‑assisted engineering workflows—with interest in leveraging emerging technologies to enhance system performance and developer productivity. Please note that this role is only available in Seattle, WA. In alignment with our flexible work model, employees are required to be in‑office at least three days a week and relocation assistance is not offered. The total cash range for this position in Seattle is \$119,000.00 to \$166,500.00. Employees in this role have the potential to increase their pay up to \$190,500.00, based on ongoing, demonstrated, and sustained performance. Benefits Expedia Group offers a wide range of benefits, including medical/dental/vision coverage, paid time off, an Employee Assistance Program, wellness and travel reimbursement, travel discounts, and an International Airlines Travel Agent membership. Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the accommodation request form. Equal Employment Opportunity Statement Expedia 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. #J-18808-Ljbffr Traveltechessentialist