Mobile Engineer III - iOS

Expedia Group • Seattle, WA

2d • $146,000 - $204,500

About The Position

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. Why Join Us? 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. Introduction to the Team Our Technology Team partners across Expedia Group to create innovative products, services, and tools that deliver high-quality experiences for travelers, partners, and employees. Our unified technology platform, powered by data and machine learning, enables secure, differentiated, and personalized experiences that drive loyalty and traveler satisfaction. The Air Flexibility & Air Filters team focuses on transforming how travelers search for flights when plans are still forming. We build mobile experiences that help travelers explore flexible dates, alternate airports, and dynamic filters, making flight discovery clearer, faster, and more trustworthy. As a Mobile Engineer III – iOS, you will build and own customer-facing iOS features that sit directly on the critical path of discovery, experimentation, and conversion. You’ll work closely with Android, web, backend, product, and design partners to deliver high-quality mobile experiences at scale.

Requirements

• Bachelor’s degree in Computer Science, Engineering, or a related technical field, or equivalent professional experience
• 5+ years of professional iOS software development experience with a Bachelor’s degree, or 3+ years with a Master’s degree
• Strong proficiency in Swift and modern iOS frameworks such as SwiftUI (UIKit experience is a plus)
• Experience architecting scalable, modular, and maintainable iOS applications, using common patterns such as MVVM
• Strong understanding of performance optimization, memory management, and concurrency on iOS
• Experience integrating iOS applications with backend services and APIs
• Experience supporting production applications, including debugging, monitoring, and incident response
• Solid understanding of software design principles, algorithms, and data structures

Nice To Haves

• Experience integrating iOS applications with GraphQL APIs, including optimizing data usage and network performance
• Experience collaborating closely with backend teams and contributing to end-to-end mobile features
• Experience integrating third-party SDKs and APIs in production iOS applications
• Experience applying AI tools for tasks such as code generation, refactoring, testing, debugging, or documentation
• Exposure to experimentation frameworks, feature flags, or data-driven product development
• Familiarity with accessibility best practices and building inclusive mobile experiences

Responsibilities

• Design and develop high-quality iOS features using modern engineering practices, clean code principles, and thoughtful architecture
• Build and evolve SwiftUI-based experiences, ensuring performance, reliability, accessibility, and maintainability
• Collaborate cross-functionally with product managers, designers, backend engineers, and mobile peers to deliver end-to-end mobile features
• Integrate iOS applications with backend services and GraphQL APIs, handling networking, state, and data efficiently
• Apply strong software design principles, algorithms, and data structures to solve complex product and technical problems
• Lead and participate in code reviews, helping guide code quality and architectural consistency across the iOS codebase
• Debug and resolve complex issues related to performance, memory usage, concurrency, and networking
• Contribute to production reliability through on-call rotations, incident response, and root-cause analysis
• Leverage AI-powered development tools to improve productivity, code quality, debugging, and learning
• Explore and apply emerging technologies when they provide clear product or developer-experience value
• Mentor junior engineers through pairing, reviews, and technical guidance

Benefits

• 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
• medical/dental/vision
• paid time off
• Employee Assistance Program
• wellness & travel reimbursement
• travel discounts
• International Airlines Travel Agent (IATAN) membership

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level