Software Development Engineer II - C++

Expedia 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.

To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win.

We provide a full benefits package, including exciting travel perks, generous time‑off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We’re building a more open world. Join us.

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.

What’s the first thing you do when planning travel? You search for flights—and the Expedia Flights team powers one of the world’s largest flight shopping platforms, handling over 200 M daily queries and hundreds of thousands of bookings across brands like Expedia, Orbitz, and Travelocity. We build and run a proprietary Best Fare Search engine, which is running on AWS, and leverage machine learning on terabytes of data to show customers the right content.

We’re looking for a Software Development Engineer who’s passionate about high‑scale, modern technology, where you’ll deliver high‑performance C++ systems that support critical, large‑scale travel workloads. to help deliver a next‑generation flight search experience and seamlessly integrated services that enable an effortless customer journey across platforms.

• 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

• 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

• 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…