Principal Software Development Engineer, ML-Powered Flight Search

Minimum Qualifications

• Bachelor's degree in Computer Science or a related technical field; or equivalent related professional experience.
• 12+ years of relevant professional experience.
• Demonstrated expertise in large-scale system architecture, technical decision making, and delivery of complex multi-domain solutions.
• Proven track record in designing and operating secure, high-quality, and scalable software systems.
• Familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products.

Pay and benefits

Experience leading architectural transformation and modernization initiatives for large, distributed systems. Demonstrated success guiding engineering organizations through periods of significant growth, change, or complexity. Expertise in full stack engineering with proven ability to operate across multiple technical domains and platforms.

Track record of championing data-driven decision making and operational excellence for mission-critical systems. Experience building and deploying neural search and embedding-based retrieval systems, including vector databases (e.g., Pinecone, Weaviate, FAISS), semantic search architectures, and large-scale similarity search at scale with sub-100ms latency requirements.

Strong experience with deep learning frameworks (PyTorch, TensorFlow) for production ML systems, including designing and deploying ranking models, personalization engines, and real-time inference pipelines with knowledge of model serving patterns (e.g., TorchServe, TensorFlow Serving, BentoML) and online/offline evaluation frameworks. The total cash range for this position in Seattle is $231,000.00 to $323,500.00.

Employees in this role have the potential to increase their pay up to $369,500.00, 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 perks Expedia 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.

Accommodation requests Expedia Group is committed to providing an inclusive and accessible recruiting experience. About Expedia Group Expedia 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 notice Employment 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 employer will provide the Social Security Administration (SSA), if necessary, the Department of Homeland Security (DHS) with information from each new employee's I-9 to confirm work authorization.