Principal Software Development Engineer

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.

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.

The Landing Pages Engineering team builds and scales the platform behind millions of programmatically generated landing pages across all Expedia Group brands. These pages are a critical gateway in the customer journey, helping travellers discover destinations, properties, and travel experiences worldwide. The team partners closely with SEO, SEM, Product, Content, and other engineering groups to deliver fast, reliable, high‑quality experiences at a massive scale.

As a Principal Software Development Engineer, you’ll shape how millions of travellers first discover and begin planning their journeys across Expedia Group’s brands. You’ll take ownership of the architecture, technical direction, and long‑term evolution of the backend platforms that power high‑traffic landing and entry experiences, operating at the intersection of growth, experimentation, and large‑scale distributed systems. You’ll design and evolve the foundational infrastructure that enables rapid experimentation, fast iteration cycles, and consistently high‑quality user experiences across all landing‑page surfaces.

Working closely with product, design, data science, marketing, and engineering partners, you’ll deliver highly available, low‑latency services and APIs that support personalisation, experimentation, and continuous optimisation. You'll set engineering best practices, mentor engineers across multiple squads, and provide hands‑on technical leadership. Expect to work with modern technologies, including Kotlin/Java, AWS, Kubernetes, Docker, and advanced observability and experimentation platforms.

This is a highly collaborative and technically demanding domain where engineering excellence, cross‑team influence, and strong product intuition are essential. You’ll also champion the safe and effective use of AI‑assisted development and modern AI tooling—from code generation to intelligent automation—to accelerate delivery, improve quality, and unlock new capabilities across the platform.

• Lead the end‑to‑end design and development of highly scalable, resilient landing page services and experiences that power customer acquisition and engagement across multiple brands and platforms.

• Define and evolve service, API, and data models for landing page systems, ensuring clean contracts, robust low‑level designs, and efficient integration with upstream and downstream services.

• Set technical direction, standards, and best practices for frontend and backend engineering within Landing Pages Engineering, influencing architecture, reliability, performance, and security across the domain.

• Drive experimentation and data‑informed decision making by partnering with product, analytics, and marketing to implement and iterate on features that optimize conversion, SEO, and overall customer outcomes.

• Mentor and elevate other engineers through design reviews, code reviews, and technical coaching, fostering an inclusive, high‑performing engineering culture that is adaptable across multiple problem domains.

• 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 and enabled solutions that improve outcomes, including familiarity with AI-driven systems, tools, or workflows and applying…