Mobile Engineer I

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.

Introduction to the Team:
The HCOM Differentiators team is part of Search Experience and focuses on optimizing and evolving the end-to-end Hotels.com experience for the brand’s key traveller segments: Savvy Trip Takers and Hotels Business Travellers. The team turns Hotels.com’s distinct customer needs and brand strategy into differentiated, intuitive, and value-led shopping experiences.
Working across product surfaces and partner teams, the team delivers experiences that help travellers discover relevant stays, understand value, and make confident booking decisions. Its work includes business-travel intent and preferences, business-rate experiences, price and value insights, deals, personalized content, and other targeted improvements across the lodging journey.
The team’s strength is its end-to-end ownership mindset: bringing together product, design, backend, frontend, mobile, experimentation, and partner-team collaboration to reduce execution fragmentation and accelerate meaningful Hotels.com improvements for travellers.

In this role, you will:

• Design, develop, test, and maintain performant, resilient, and secure mobile application features and components that support Expedia Group products and platforms.

• Collaborate with product managers, designers, and other engineers to translate business and customer requirements into robust mobile solutions, including system design (LLD), API integration design, and data modeling for client–server interactions.

• Write clean, maintainable, and well-documented mobile code, along with unit tests and basic tooling, to improve the reliability, observability, and operational excellence of mobile applications.

• Participate in code reviews, design reviews, and technical discussions within your team, identifying opportunities to simplify mobile architectures, reduce technical debt, and improve performance and quality.

• Own the full lifecycle of the mobile features you build, including integration with back-end services, deployment processes, monitoring, troubleshooting, incident response, and incremental improvement, and safely integrate and operate AI/ML‑enabled solutions that improve outcomes.

• Work across different parts of the mobile stack or adjacent technical domains as needed, building familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real world products, while developing skills that can be applied across multiple teams or domains.

Minimum Qualifications:

• Bachelor’s degree in Computer Science or a related technical field; or equivalent related professional experience.

• Up to 2 years of relevant professional experience developing and shipping mobile applications or mobile features, including internships, projects, or prior roles.

• Hands-on proficiency in at least one modern mobile development platform and programming language (for example, native or cross-platform), with foundational experience in system design (LLD), API design and integration, and data modeling for mobile client–server architectures.

• Demonstrated experience owning mobile features through development, testing, release, and operational support under guidance, including monitoring, troubleshooting, resolving production issues, and applying secure coding and data handling practices on mobile.

Preferred Qualifications:

• Experience contributing to the design and implementation of scalable, high-performing, and user-centric mobile features, including well-structured APIs, data models, and UI patterns that can be reused across multiple mobile surfaces or teams.

• Evidence of improving mobile application availability, performance, or reliability using metrics, observability tooling, automation, and strong operational practices such as alerting, logging, and runbooks for mobile services.

• Background integrating or leveraging AI/ML‑enabled components or platforms within mobile applications (for example, personalization, recommendations, or intelligent assistance), and safely operating AI-driven mobile features to enhance customer and business outcomes.

• Experience working across multiple areas of the mobile stack or adjacent domains (for example, mobile UI, networking, offline storage, build and release pipelines, or back-end integration), adapting quickly to new frameworks, platform capabilities, and AI-driven tooling, and using data to inform design and implementation choices.

Accommodation requests

Expedia Group is committed to providing an inclusive and accessible recruiting experience. If you need an accommodation or adjustment due to a disability during the application or recruiting process, please submit a request at https://expedia.service-now.com/askeg?id=job_accommodation.

About Expedia Group

Expedia Group includes three flagship consumer brands - Expedia, Hotels.com, and Vrbo - along with a leading B2B travel business and travel advertising offerings. Across our brands and business, we help travelers explore the world with confidence and ease.

Important notice

Employment opportunities and job offers at Expedia Group will always come from Expedia Group's Talent Acquisition and hiring teams. Never share sensitive personal information unless you are confident of the recipient. Expedia Group does not extend job offers via email or messaging tools to individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official place to find and apply for roles is https://careers.expediagroup.com/jobs/.

Equal Opportunity