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

Expedia•Austin, TX

1d•$184,500 - $258,000

About The Position

Expedia Group is seeking a Senior Mobile Engineer specializing in Flutter to join 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, allowing engineers to 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. As a Senior Mobile Engineer working in Flutter, you will help build Layla’s mobile trip-planning and booking experiences across iOS and Android.

Requirements

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.

Nice To Haves

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.

Responsibilities

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.