Senior iOS Engineer - job 1 of 2

As a Senior iOS Engineer at Via, you will be responsible for enhancing the rider experience, developing and maintaining mobile infrastructure services, and collaborating with cross-functional teams, including designers and product managers. Your role will also involve diagnosing critical production issues under pressure, ensuring our rider application remains user-friendly and high-quality.

The ideal candidate for the Senior iOS Engineer position at Via should have 5+ years of hands-on iOS app development experience, proficiency in Swift, and a strong understanding of mobile app architecture patterns such as MVC, MVVM, and RESTful APIs. Additionally, expertise in optimizing app performance and concurrent programming is essential.

The Senior iOS Engineer position at Via is based in New York, New York. While remote work policies may vary, the primary expectation is for the engineer to be present within the collaborative environment of our office. We encourage you to reach out to clarify any specifics regarding flexibility in remote work.

At Via, a strong senior iOS Engineer should excel in areas such as Swift programming, mobile app architecture, debugging complex issues, and optimizing app performance. Additionally, having knowledge of iOS frameworks like Core Location and MapKit is valued, alongside a proactive attitude and strong collaboration skills.

Via is a visionary leader in TransitTech and offers a dynamic environment where innovation thrives. Senior iOS Engineers will get to work on impactful projects that shape how people move across communities. Additionally, we pride ourselves on our inclusive culture that welcomes diverse voices and promotes personal development.

Discuss specific projects where you utilized Swift effectively, focusing on the features you developed or optimized. Highlight your understanding of Swift’s capabilities and any challenges you overcame while implementing solutions. This showcases both your technical skills and problem-solving abilities.

In your response, define both architectural patterns. Describe how MVC separates concerns into Model, View, and Controller, while MVVM introduces a ViewModel to facilitate data binding between the UI and business logic. Provide examples of when you might prefer one pattern over the other.

Share your approach to prioritization, such as using a matrix for urgency vs. importance or relying on project management tools. Illustrate this approach with a specific timeframe, emphasizing how clear communication with your team ensures that all key functionalities keep moving forward.

Detail the complexity of the bug, including its potential impact, and the steps you took to identify and troubleshoot it. Speak about your debugging methods, such as using Xcode’s debugging tools or logging, and the final solution you implemented to resolve the issue.

Discuss strategies such as optimizing code, managing memory usage, and using instruments for performance testing. Highlight the importance of profiling your app during development to identify potential bottlenecks early.

Emphasize the importance of collaboration in producing high-quality software. Share instances where you successfully worked with designers, backend engineers, or product managers to achieve a shared vision and how this affected a project's outcome positively.

Discuss your commitment to continuous learning through resources such as online courses, attending conferences, and following influential figures in the iOS development community. This shows your proactive attitude toward professional development and keeping your skills sharp.

Talk about your mentorship philosophy by providing guidance, sharing knowledge, and fostering a supportive learning environment. Include an example where you helped a junior engineer overcome challenges and grow in their role.

Highlight a specific instance where feedback led to changes in your approach or coding practices, demonstrating your open-mindedness and adaptability. Share how you integrated feedback into your workflow to improve the overall project outcomes.

Discuss your approach to evaluating and integrating third-party frameworks, emphasizing factors such as reliability, support, and community feedback. Share an example of a project where you successfully implemented a library and how it enhanced your app's functionality.