Senior Software Development Engineer, Loyalty - Back End

Overview

As a Backend Engineer within the Loyalty Engineering organization, you will contribute to the technical strategy and architecture for the AI‑empowered Loyalty charter, developing next‑generation intelligent engagement experiences across Expedia brands.

• Design, build, and evolve reliable, scalable backend services and APIs that power key Loyalty experiences across brands and platforms.
• Lead end‑to‑end solution design, including low‑level system design, API contracts, and data models, ensuring performance, security, and maintainability.
• Own complex services through the full software development lifecycle, from technical design and implementation to deployment, monitoring, and incident resolution.
• Collaborate with product, architecture, and cross‑functional engineering teams to translate requirements into technical solutions that meet business and customer outcomes.
• Safely integrate and operate AI/ML‑enabled solutions that improve outcomes, including personalization, decisioning, or optimization within Loyalty systems.
• Apply backend engineering expertise across multiple domains within Loyalty, contributing to shared platforms, reusable components, and standardized engineering practices.

• Bachelor’s degree in Computer Science or a related technical field; or equivalent related professional experience.
• 8+ years of relevant professional experience.
• Proven ownership of one or more backend services, including responsibility for design, implementation, quality, deployment, and operational health.
• Strong proficiency in backend programming, API design, data modeling, and working with relational or No
  
  SQL databases in distributed systems.
• Familiarity with AI‑driven systems, tools, or workflows and applying AI/ML concepts to real‑world products.

• Experience designing and evolving large‑scale, customer‑facing platforms using Java, including event‑driven and microservice‑based architectures.
• Deep expertise in RESTful API design, data modeling, security, and service reuse across domains.
• Experience designing and evolving high‑scale, low‑latency backend systems for customer‑facing products in a complex ecosystem such as Loyalty or transactional platforms.
• Track record of leading technical design for multi‑service solutions, including integration patterns, data contracts, and performance optimization across systems.
• Strong focus on reliability and operational excellence, including observability, incident management, and continuous improvement of service health.
• Hands‑on experience integrating or operating AI/ML‑enabled components in backend services, such as recommendation engines, scoring services, or intelligent decision flows.
• Experience integrating and operating AI/ML‑enabled capabilities in production, including use of developer AI tools such as Claude, Git Hub Copilot, and Cursor.
• Experience in ad‑tech and user targeting is a plus.

Base pay range for this position in San Jose is $ to $, with potential to increase up to $ based on performance. Benefits include medical/dental/vision coverage, paid time off, Employee Assistance Program, wellness and travel reimbursement, and travel discounts.

Expedia Group 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.