Senior Software Development Engineer, Loyalty - Full Stack

Expedia Expedia · Hospitality · CA

Senior Software Development Engineer role focused on building and evolving full-stack services and web experiences for AI-empowered loyalty products. The role involves system design, integration of AI/ML solutions, and collaboration with cross-functional teams to deliver intelligent engagement experiences.

What you'd actually do

  1. Design, build, and evolve full stack services and web experiences for global loyalty products, ensuring high availability, scalability, and performance across multiple customer and partner touchpoints.
  2. Lead end-to-end system design, including low-level design, API design, and data modeling, to create maintainable, secure, and extensible solutions that align with loyalty platform architecture.
  3. Own complex features and services across the stack from technical design through implementation, testing, deployment, and operational support, driving high engineering standards and code quality.
  4. Collaborate with product, design, and cross-functional engineering teams to translate loyalty product requirements into technical solutions, making pragmatic trade-offs using data and customer impact.
  5. Safely integrate and operate AI/ML‑enabled solutions that improve outcomes, including personalization, experimentation, or optimization capabilities within loyalty experiences and services.

Skills

Required

  • Professional software development experience building and operating full stack or backend services
  • hands-on work with APIs, data models, and web applications
  • Proven experience owning design and implementation for services or features within a multi-service or domain environment
  • accountability for quality, reliability, and operational readiness
  • Strong proficiency in at least one modern programming language and associated frameworks
  • design, review, and debug complex, distributed systems
  • Familiarity with AI-driven systems, tools, or workflows
  • applying AI/ML concepts to real world products

Nice to have

  • Experience designing and evolving large‑scale, customer‑facing platforms using Java
  • event-driven and microservice‑based architectures
  • deep expertise in RESTful API design, data modeling, security, and service reuse across domains
  • Proven ability to drive operational excellence for high‑traffic production systems
  • observability, incident response, performance tuning, and capacity planning
  • Strong full‑stack experience
  • modern front‑end development with React
  • integration with scalable back‑end services in cloud‑native environments
  • Hands‑on experience integrating and operating AI/ML‑enabled capabilities in production
  • use of developer AI tools such as Claude, GitHub Copilot, and Cursor
  • Familiarity with ad‑tech, user targeting, experimentation, and data analytics practices

What the JD emphasized

  • AI-empowered Loyalty charter
  • agentic systems
  • AI/ML‑enabled solutions

Other signals

  • AI-empowered Loyalty charter
  • intelligent engagement experiences powered by modern AI and agentic systems
  • Safely integrate and operate AI/ML‑enabled solutions