Software Development Engineer II, Loyalty - Full Stack

Expedia • San Jose, CA

5d • $129,000 - $180,500

About The Position

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. Why Join Us? 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. Introduction to the Team: The Loyalty Engineering organization powers continuous engagement, re-engagement, and re-acquisition for travelers worldwide. We build the systems that create a durable growth flywheel for Expedia, deepening traveler relationships while driving measurable business impact across brands and markets. In this role, you will contribute to the development for the AI-empowered Loyalty charter — developing and delivering next-generation, intelligent engagement experiences powered by modern AI and agentic systems.

Requirements

• Bachelor’s degree in Computer Science or a related technical field; or Equivalent related professional experience.
• 2+ years of relevant professional experience.
• Professional software development experience working on end-to-end services or applications, including ownership of components or services in production.
• Hands-on experience with full-stack development, including system design (LLD), service/API development, and data modeling, plus front-end implementation using modern frameworks and tooling.
• Demonstrated ability to design, implement, test, and maintain services within a broader system, collaborating cross-functionally to deliver business outcomes.

Nice To Haves

• Experience designing and evolving service contracts, low-level designs, and data models for complex, high-traffic systems using Java.
• Strong full‑stack development experience building scalable web applications with React and modern frontend architectures.
• Background working with loyalty, rewards, e-commerce, or similar transactional domains, with a focus on scalable and secure architectures.
• Experience operating services at scale, including monitoring, alerting, incident response, and continuous improvement of system reliability and performance.
• Ability to safely integrate and operate AI‑enabled solutions, leveraging tools such as GitHub Copilot, Cursor, and Claude to improve developer productivity and customer experiences.
• Familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products, including exposure to recommendation, personalization, or ranking systems in web or app experiences.
• Experience in ad-tech and user targeting is a plus.

Responsibilities

• Design, build, and maintain full-stack services and user experiences that power loyalty features, ensuring high availability, reliability, and performance across the stack.
• Implement clean, maintainable low-level designs, APIs, and data models to support loyalty programs, transactional flows, and customer-facing experiences across multiple products.
• Collaborate with product, design, and other engineering teams to translate business and customer requirements into scalable technical solutions that can be reused across domains.
• Write high-quality, testable code, perform code reviews, and contribute to continuous improvement of engineering standards, operational excellence, and deployment practices for loyalty services.
• Troubleshoot, debug, and optimize services and front-end components in production, using data and telemetry to drive reliability, security, and performance improvements.
• Safely integrate and operate AI/ML‑enabled solutions that improve outcomes, including familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products.

Benefits

• 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
• medical/dental/vision
• paid time off
• Employee Assistance Program
• wellness & travel reimbursement
• travel discounts
• International Airlines Travel Agent ( IATAN ) membership

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level