Senior Mobile Developer (Kotlin Multiplatform)

As a Senior Mobile Developer at Droids On Roids, you'll primarily drive the development of native applications using Kotlin Multiplatform. Your responsibilities include shaping the architecture of mobile projects, mentoring junior developers, working with both Kotlin and Swift codebases, and delivering high-quality features. You'll also be involved in client communication and collaborating within Agile teams to ensure best practices in mobile app development.

To apply for the Senior Mobile Developer role at Droids On Roids, candidates should have at least 3 years of experience in mobile development, with strong proficiency in Kotlin and knowledge of Swift. Familiarity with Kotlin Multiplatform, mobile design patterns, and experience in MVVM or MVI architectures are essential. Excellent communication skills in English and Polish, along with a solid grasp of automated testing and clean code principles, are also necessary.

In your role as a Senior Mobile Developer at Droids On Roids, you'll be using several modern technologies to develop and maintain applications. This includes Kotlin for Android and Swift for iOS, along with UI frameworks like SwiftUI and Jetpack Compose. You'll also engage in dependency injection, manage HTTP communication using Ktor Client, and employ asynchronous programming with Kotlin Coroutines and Swift Concurrency. Proficiency in CI/CD processes and automated testing tools is key.

At Droids On Roids, our working environment is agile and fast-paced, promoting adaptability to changing priorities. As a Senior Mobile Developer, you will collaborate closely with your peers and other teams, participating in continuous learning and development. We encourage mentorship and sharing of knowledge, ensuring that everyone contributes to and benefits from the team's overall growth.

The recruitment process for the Senior Mobile Developer position at Droids On Roids begins with submitting an application form. This is followed by an initial Hangouts call with the Mobile Team, which lasts a maximum of 30 minutes. Successful candidates then participate in a remote interview that includes both soft and technical aspects, such as pair programming, lasting up to 2 hours. We aim to ensure a smooth and informative experience throughout the process.

When answering this question for the Senior Mobile Developer position, emphasize your hands-on experience with Kotlin Multiplatform by mentioning specific projects you've worked on, the challenges you faced, and the solutions you implemented. Discuss your understanding of shared codebases and how they improve cross-platform development efficiency.

In response, detail specific design patterns relevant to mobile app development, such as MVVM or MVI. Describe how you've utilized these patterns in your previous projects and the benefits they provided in terms of code maintainability and scalability.

Explain your methodology for maintaining high code quality. You might mention strategies such as code reviews, implementing automated testing, adhering to clean coding principles, and regular refactoring practices to enhance code maintainability.

Use the STAR (Situation, Task, Action, Result) method to structure your response. Explain the context of the bug, what made it challenging, the steps you took to investigate and fix the issue, and the positive outcome of your troubleshooting efforts.

Discuss your familiarity with continuous integration and continuous delivery/deployment processes. Highlight the tools you've used (such as Jenkins or GitLab CI) and how you've integrated CI/CD principles into your team's workflow to enhance development efficiency.

Share your strategies for balancing time constraints with quality assurance, such as prioritizing features, effective time management, and utilizing automated testing to catch issues early. Mention how you communicate with your team to ensure alignment on deadlines without sacrificing quality.

Highlight your belief in the importance of mentorship and your methods for supporting junior developers. Discuss techniques like conducting code reviews, pairing in coding sessions, and offering constructive feedback, along with sharing resources to help them advance their skills.

Discuss your dedication to continuous learning by mentioning that you follow relevant industry blogs, participate in online courses, attend webinars, or engage with community forums. Emphasize how this commitment enables you to bring innovative ideas to your work.

Share your understanding and experience with asynchronous programming, specifically using Kotlin Coroutines. Discuss situations where this was beneficial and how it has improved performance or user experience in your applications.

Be honest about challenges—whether they relate to platform fragmentation, performance optimization, or keeping up with user expectations. Follow up by discussing how you've addressed these challenges in past projects and the lessons learned.