Software Engineer, iOS (All Teams) - job 1 of 2

As a Software Engineer, iOS at DoorDash, you will be primarily responsible for building and maintaining our iOS application, enhancing our codebase, and implementing features that improve real-time data transfer across our platform. You will also work on extending our APIs and can expect to frequently engage in unit testing for quality assurance, aligning with industry standards for iOS development.

To qualify for the Software Engineer, iOS role at DoorDash, candidates should have a B.S., M.S., or PhD in Computer Science or a related field. Proficiency in Swift and a strong understanding of the iOS SDK are essential. Familiarity with networking, storage, and Cocoapods, along with solid knowledge in systems and object-oriented programming (OOP), will help you succeed in this position.

A Software Engineer, iOS at DoorDash should be expert in Swift, as it’s the primary language used for iOS development. Familiarity with Objective-C may also be beneficial, depending on the existing codebase. Additionally, understanding concepts related to networking, mobile app architecture, and data storage is critical for effective performance in this role.

DoorDash provides significant growth opportunities for a Software Engineer, iOS. As the company continues to expand and innovate, you will have chances to work on high-impact projects, refine your skills through continuous learning, and collaborate with talented engineers. You can also contribute your unique perspectives to shape the team culture and processes, allowing for personal and professional development.

The Software Engineer, iOS role at DoorDash is integral to our engineering team, playing a crucial part in developing our mobile application that connects Consumers, Merchants, and Dashers. This role collaborates with other engineers and teams, ensuring seamless integration of new features and improvements, which directly impacts our user experience and operational efficiency.

When answering this question, highlight your hands-on experience with Swift. Discuss specific projects where you utilized Swift effectively, the challenges you encountered, and how you overcame them. Be prepared to elaborate on your understanding of Swift's features and why they are advantageous for iOS development.

Explain your approach to maintaining high-quality code, including practices like code reviews, automated testing, and continuous integration. Highlight how these steps help improve coding efficiency and reduce bugs, thereby optimizing the user experience.

Discuss strategies such as using asynchronous programming, leveraging Apple’s Grand Central Dispatch, or frameworks like Combine to manage real-time data transfer. Elaborate on specific instances where you successfully implemented these solutions in past projects.

Provide examples of APIs you've integrated in previous roles, detailing how you structured your requests and handled data. Mention your familiarity with RESTful or GraphQL APIs and how you ensured efficient communication between your app and external systems.

Share a story about a complex feature you developed, focusing on the problem-solving process, the technologies you used, and the ultimate impact on the user experience. Explain how you collaborated with your team to overcome hurdles during development.

Express your commitment to continuous learning by discussing resources you rely on, such as online courses, blogs, or community forums. Mention any events or meetups you attend to connect with other professionals in the field.

Illustrate your experience with code refactoring by describing the initial code's challenges, the strategies you employed to enhance it, and the measurable improvements achieved, such as performance enhancements or bug reductions.

Familiarize yourself with patterns such as MVC, MVVM, or Singleton, and provide instances of how you've applied one or more in your projects. Discuss the advantages these patterns offered in terms of maintainability and scalability.

Explain your method for assessing feature importance based on user needs and business impact. Share any frameworks or tools that help you align team goals while managing chaotic timelines.

Discuss techniques you’ve used such as using Xcode’s debugging tools, employing breakpoints, and checking logs to identify issues. Share how your troubleshooting process helps minimize downtime and enhance user experience.