Senior Mobile Engineer, Flutter (iOS & Android) - Layla AI

11105 Expedia, Inc.; Washington; On-site; USD 185,000 - 258,000; Full time

Benefits offered by this job

Medical coverage

Paid time off

Travel discounts

IATAN membership

Job summary

Expedia Group seeks a Senior Mobile Engineer (Flutter) to design, build, and maintain a cross-platform mobile experience for Layla, a conversational travel assistant. You will own features end-to-end, from design through release, collaborating with product, design, and backend teams.

The role emphasizes delivering high-quality, accessible mobile experiences with strong testing, CI/CD, and performance focus, including AI-enabled capabilities while ensuring safe integration.

Qualifications

• Bachelor’s degree in Computer Science or related field.
• 8+ years of relevant professional experience.
• Flutter and Dart production mobile apps experience with ownership from design to release.
• Experience delivering to iOS and Android from a shared codebase; API integration & data modeling.
• Maintainable, testable mobile codebases using modern tooling and libraries.
• Familiarity with AI-driven systems and safely integrating AI/ML features.

Responsibilities

• Design, build, and maintain Layla’s cross-platform mobile experience in Flutter (Dart).
• Own end-to-end feature delivery for mobile, including API integration and data modeling.
• Collaborate with Product, Design, and backend engineering to create intuitive mobile flows.
• Drive mobile quality with automated testing, CI/CD, performance monitoring, and observability.
• Safely integrate AI/ML-enabled capabilities within the app and ensure responsible use.

Skills

Flutter & Dart

Mobile development

API integration

Testing & CI/CD

AI/ML concepts

Architecture improvements

Mentoring engineers

Education

Bachelor’s degree in Computer Science

Tools

Swift

Kotlin

Platform channels

CI/CD tooling

Job description

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 Expedia Group Product Team

The Product Team creates high-quality end-to-end experiences for travelers, partners, and Expedia Group. Our customer-first mindset focuses on developing products that encourage loyalty and repeat business from our travelers and partners. We partner closely with teams across Expedia Group to achieve growth and results for our customers and company. We connect Travelers to new experiences, through trusted relationships.

Strategic Partnerships and Affiliates

breadth of solutions which include cashback, travel offers, loyalty exchange, co-branded sites, Affiliate APIs and EG’s Affiliate Program, bring a partners’ audience onto EG sites, thereby increasing EG’s traffic and exposure.

Introduction to the Layla AI Team

Layla is an AI-native travel-planning and booking company, now part of Expedia Group’s Product organization. Through a conversational travel assistant, Layla helps travelers move from inspiration to a complete, bookable itinerary — flights, hotels, activities, and the day-by-day detail — in minutes. As part of Expedia Group, the team combines Layla’s planning and personalization capabilities with Expedia Group’s global supply, first-party traveler insights, marketplace scale, and booking technology.

The team is small and senior by design and operates with startup pace: you own a surface, ship it, and see the impact on real travelers within weeks — with decisions driven by data and AI tooling used in practice every day.

Senior Mobile Engineer (Flutter)

In this role, you will:

• Design, build, and maintain Layla’s cross-platform mobile experience in Flutter (Dart), delivering a single, high-quality codebase that performs reliably across iOS and Android.
• Own end-to-end feature delivery for mobile — including low-level design, API integration, and data modeling — for conversational trip-planning and booking features that connect to Layla and Expedia Group services.
• Collaborate closely with Product, Design, and backend engineering to turn the conversational travel experience into intuitive, accessible, and performant mobile flows, iterating quickly based on experimentation and real traveler feedback.
• Drive mobile quality and reliability through automated testing, continuous integration and delivery, performance monitoring, and observability across both platforms.
• Safely integrate and operate AI/ML-enabled capabilities within the app — such as assistant-driven planning, personalization, and recommendations — applying AI/ML concepts to real-world mobile features responsibly.
• Contribute to native interoperability where platform-specific capabilities are required, and help establish reusable patterns and engineering best practices for Flutter development at Layla.

Minimum Qualifications

• Bachelor’s degree in Computer Science or a related technical field; or equivalent related professional experience.
• 8+ years of relevant professional experience.
• Professional experience building and shipping production mobile applications with Flutter and Dart, including ownership of features from design through release and support.
• Experience delivering to both iOS and Android from a shared codebase, including API integration, data modeling, and network/offline data handling.
• Demonstrated ability to design and maintain testable, maintainable, and performant mobile codebases using modern frameworks, tooling, and libraries.
• Familiarity with AI-driven systems, tools, or workflows and applying AI/ML concepts to real-world products, with a focus on safely integrating these capabilities into mobile features.

Preferred Qualifications

• Advanced proficiency with Flutter/Dart, mobile UI/UX best practices, state management, and performance optimization.
• Experience with native iOS (Swift/SwiftUI) and/or Android (Kotlin/Jetpack) interoperability via platform channels or native modules.
• Proven track record leading technical design for complex mobile initiatives — including architecture decisions, API contracts, and data models that span multiple services or domains.
• Experience building accessible (a11y) and inclusive mobile user interfaces.
• Experience integrating AI/ML-enabled capabilities into mobile applications — such as intelligent assistant flows, personalization, recommendations, or content ranking — with attention to safety and responsible use.
• Experience using AI-assisted development tools (for example, Claude or similar) to improve developer productivity, code quality, and delivery speed.
• Demonstrated ability to drive architectural improvements (modularization, design patterns, platform standardization) and to mentor other engineers.

Benefits and Perks

Expedia Group offers benefits and perks designed to support employees and their families, including medical/dental/vision coverage, paid time off, an Employee Assistance Program, wellness and travel reimbursement, travel discounts, and International Airlines Travel Agent Network (IATAN) membership.

Salary

The total cash range for this position in Seattle is $184,500.00 to $258,000.00. Employees in this role have the potential to increase their pay up to $295,000.00, which is the top of the range, based on ongoing, demonstrated, and sustained performance in the role.

The total cash range for this position in Austin is $184,500.00 to $258,000.00. Employees in this role have the potential to increase their pay up to $295,000.00, which is the top of the range, based on ongoing, demonstrated, and sustained performance in the role.

Starting pay for this role will vary based on multiple factors, including location, available budget, and an individual’s knowledge, skills, and experience. Pay ranges may be modified in the future.

Accessibility & Accommodation

Expedia Group is committed to providing an inclusive and accessible recruiting experience.

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.

Expedia Group powers travel for everyone, everywhere through our global platform. Driven by the core belief that travel is a force for good, we help people experience the world in new ways and build lasting connections. We provide industry-leading technology solutions to fuel partner growth and success, while facilitating memorable experiences for travelers.

Expedia Group's family of brands includes: Brand Expedia®, Hotels.com® Expedia® Partner Solutions, Vrbo®, trivago®, Orbitz®, Travelocity®, Hotwire®, Wotif®, ebookers®, CheapTickets®, Expedia Group™ Media Solutions, Expedia Local Expert®, CarRentals.com™, and Expedia Cruises™. For more information, visit www.expediagroup.com.

Equal Opportunity

Equal Opportunity Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, or any other characteristic protected by law. This employer participates in E-Verify. The employer will provide the Social Security Administration (SSA) and, if necessary, the Department of Homeland Security (DHS) with information from each new employee’s I-9 to confirm work authorization.