Senior Mobile Engineer

Expedia Expedia · Hospitality · CA

Senior Mobile Engineer role at Expedia focused on designing, implementing, and optimizing complex iOS features for travel applications. Responsibilities include collaborating with cross-functional teams, ensuring quality standards, mentoring junior engineers, and driving mobile architecture decisions. Requires expertise in Swift, SwiftUI, UIKit, various architectural patterns, testing frameworks, and performance monitoring tools.

What you'd actually do

  1. Identify outmoded methods of operation with current software and design plans for disrupting them in a non-disruptive manner.
  2. Test and maintain applications or systems and related programs and procedures by using a variety of software development tools following design requirements of customer.
  3. Act as a spokesperson for software design best practices.
  4. Research and recommend frameworks and architectural/code design patterns.
  5. Lead the design and implementation of complex iOS features for Expedia’s Car Experience applications across multiple brands.
  6. 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.
  7. Develop and execute comprehensive test strategies integrating CI/CD pipelines to maintain app reliability.
  8. Drive mobile architecture design and decisions, patterns (MVVM/VIPER), and tools to ensure scalable and maintainable code.
  9. Monitor and optimize application performance, proactively addressing system bottlenecks, memory leaks, and crashes using Xcode Instruments and observability dashboards.
  10. Mentor and guide junior engineers, providing technical feedback, conducting code reviews, and establishing coding standards and architectural best practices for mobile applications.

Skills

Required

  • SwiftUI
  • UIKit
  • Swift
  • Objective-C
  • RESTful APIs
  • GraphQL
  • Xcode
  • App Store Connect
  • XCTest
  • Swift Package Manager
  • MVVM
  • VIPER
  • Backend-driven UI
  • Clean Architecture
  • Composable Architecture
  • Grand Central Dispatch (GCD)
  • OperationQueue
  • Time profiler
  • Memory leak detection
  • Allocation analysis
  • Firebase Crashlytics
  • Datadog
  • Splunk
  • Experimentation frameworks
  • A/B testing frameworks
  • Master’s degree in Computer Science, Management Information Systems, or related technical field and four years of experience OR Bachelor’s degree in Computer Science, Management Information Systems, or related technical field and six years of experience

Nice to have

  • travel perks
  • generous time-off
  • parental leave
  • flexible work model
  • career development resources

What the JD emphasized

  • 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