Principal Software Development Engineer

At Expedia Group, we help travelers explore the world, one journey at a time. As a global travel company powered by passionate people, trusted partnerships, and leading technology, we connect travelers, partners, and advertisers through our consumer brands, B2B network, and travel advertising business. Here, you'll do meaningful work that helps millions of people discover, book, and experience travel with more ease, confidence, and joy. Our five Behaviors-Traveler First, Think Big, Operate with Excellence, Ownership Mindset, and Succeed Together-help foster a supportive environment where people can grow their careers and have the flexibility, benefits, and support to do their best work. Join us and build for travelers everywhere. Principal Software Development Engineer 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. In this role, you will: 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