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.

Our Technology Team partners with teams across Expedia Group to create innovative products, services, and tools to deliver high‑quality experiences for travelers, partners, and our employees. A singular technology platform powered by data and machine learning provides secure, differentiated, and personalized experiences that drive loyalty and traveler satisfaction.

Expedia Global Payments (EGP) is looking for top engineering talent to help drive the development of our payment platform, seamlessly roll out new payment methods, and continuously improve on our operational excellence and engineering practices. We offer a highly dynamic set of services that enable customers from all over the world to pay for travel in a variety of ways. We build, operate, and improve payment services for Expedia Group's brands, our suppliers (hoteliers, airlines, vacation rental owners/agencies, etc.),

and our corporate needs. We do this accurately and at scale, processing over $100 billion payments in 55+ currencies in over 155 countries every year, and across a diverse set of payment options! This opportunity presents great technical challenges and the ability to have a tremendous business impact.

Technology and innovation are at the heart of our organization. We provide solutions that reduce the cost of payments and improve performance, scalability, availability, and resiliency. We also provide an abundance of functional support to services in our platform, and the needs are ever‑growing, as we adapt to new payment solutions and capabilities.

This position focuses not only on implementing innovative software solutions for e‑commerce payments systems at scale but also on being a role model and mentor to your fellow engineers. You will get to expand your skills in building highly scalable solutions while influencing others and raising the bar on the overall level of excellence within the team. You will also get the opportunity to influence decisions across the technology ecosystem within Expedia Group by being a key domain guide.

Additionally, your input will be critical to the selection of new senior‑level hires on the team.

• Lead the design and implementation of complex, scalable software systems and services that span multiple domains or organizations.
• Drive architectural decisions, ensuring quality, reliability, and maintainability across large‑scale distributed systems.
• Mentor, influence, and develop engineering teams, fostering technical excellence and best practices.
• Champion the integration and operation of AI/ML‑enabled solutions that improve business and customer outcomes.
• Collaborate with cross‑functional stakeholders to define technical solutions and deliver impactful business results.
• Guide the adoption of modern development methodologies, system design (LLD), API design, and robust data modeling practices.

• Bachelor’s degree in Computer Science or a related technical field; or Equivalent related professional experience.
• 10+ years of relevant professional experience.
• Proven track record of leading complex technical initiatives across multiple systems, domains, or organizational boundaries.
• Demonstrated expertise in system design, large‑scale architecture, API design, and data modeling.
• Familiarity with…