Senior Mobile Engineer

September 29, 2026

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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.

Responsibilities

Identify outmoded methods of operation with current software and design plans for disrupting them in a non-disruptive manner.
Test and maintain applications or systems and related programs and procedures by using a variety of software development tools following design requirements of customer.
Act as a spokesperson for software design best practices.
Research and recommend frameworks and architectural/code design patterns.
Lead the design and implementation of complex iOS features for Expedia’s Car Experience applications across multiple brands.
Collaborate with cross functional teams, including backend engineering, product, design, and analytics teams, to integrate APIs; design, implement, and deploy application features using experimentation frameworks; integrate analytics solutions; and ensure consistency with platform architecture and quality standards.
Develop and execute comprehensive test strategies integrating CI/CD pipelines to maintain app reliability.
Drive mobile architecture design and decisions, patterns (MVVM/VIPER), and tools to ensure scalable and maintainable code.
Monitor and optimize application performance, proactively addressing system bottlenecks, memory leaks, and crashes using Xcode Instruments and observability dashboards.
Mentor and guide junior engineers, providing technical feedback, conducting code reviews, and establishing coding standards and architectural best practices for mobile applications.

Requirements

SwiftUI and UIKit
Swift and Objective-C
RESTful or GraphQL
Xcode, App Store Connect, XCTest, and Swift Package Manager
MVVM, VIPER, Backend-driven UI and Clean/Composable Architecture
GCD (Grand Central Dispatch) or OperationQueue
Time profiler, memory leaks, and allocations
Firebase Crashlytics
Datadog or Splunk
Experimentation and A/B testing frameworks

Benefits

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

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