Software Development Engineer II, Advertising Technology

Expedia Group is a leader in travel technology, dedicated to making travel smoother and more memorable. The Software Development Engineer II will play a key role in building and scaling high-performance systems for the advertising network, primarily focusing on backend development while also contributing to customer-facing features.

Responsibilities:

• Design, build, test, and maintain scalable backend services and APIs that power the advertiser portal and enable third-party integrations
• Contribute to the development of a unified ads platform, delivering reusable capabilities across multiple advertising products
• Own features and services end-to-end—from design and implementation to deployment and operational support
• Apply strong coding fundamentals to deliver high-quality, maintainable, and extensible solutions
• Participate in system design, low-level design, API design (including GraphQL), and data modeling
• Build customer-facing features (primarily backend-driven, with some React frontend contributions)
• Drive improvements in scalability, performance, and reliability for high-traffic advertiser systems
• Collaborate with engineering, product, operations, and globally distributed teams to translate business needs into technical solutions
• Troubleshoot production issues and improve system health through monitoring, debugging, automation, and observability practices
• Write secure, well-tested code, participate in code reviews, and follow engineering best practices
• Leverage AI-enabled solutions and AI-assisted development tools to improve developer productivity and product outcomes