Mobile Developer (Entry Level)

Technical duties

• Implement native user interfaces following core mobile UI design principles for iOS and/or Android.
• Integrate and consume REST APIs to fetch, sync, and display dynamic data within mobile applications.
• Apply established architectural design patterns such as MVVM, MVP, or MVC during feature development.
• Write unit tests and perform debugging across mobile platforms using Xcode or Android Studio.
• Explore functional reactive programming concepts utilizing ReactiveX frameworks where applicable.

Project responsibilities

• Developing end-to-end consumer mobile applications integrated with secure RESTful backend APIs.
• Building enterprise-grade mobile solutions incorporating MVVM, MVP, or MVC design patterns.
• Modernizing legacy codebase components and improving mobile app performance and workflows.

A typical day (Karyvio’s outline for this kind of role — not an employer commitment)

• Participate in morning stand-up meetings with the development team to align on sprint goals and task updates.
• Write and refactor clean, testable code for iOS or Android features using Swift, Kotlin, Java, or Objective-C.
• Review pull requests from peers and conduct unit testing to ensure application performance and stability.
• Research emerging mobile development tools, libraries, or ReactiveX patterns and present findings to the team.
• Collaborate with QA and design teams via clear communication channels to resolve bugs and refine UI/UX flows.

Documents to keep ready

• Resume/CV
• Cover Letter

Skills that matter, and why

• Swift

  Swift is Apple's modern programming language used for building iOS applications, making it essential if you choose to work on the iOS track at Konrad.

  How to learn it: Build small iOS applications using Xcode and study official Apple documentation and tutorials.

• Kotlin

  Kotlin is the preferred language for modern Android development, required for building robust and maintainable consumer Android applications.

  How to learn it: Practice through Android Studio tutorials and official Google codelabs focusing on Kotlin fundamentals.

• REST APIs

  Mobile apps must communicate with backend servers to fetch data; understanding REST APIs is crucial for integrating network requests.

  How to learn it: Learn how to parse JSON responses, handle HTTP methods, and use libraries like Retrofit or URLSession.

• MVVM

  Model-View-ViewModel is a widely used architectural pattern in mobile engineering that helps separate UI code from business logic for testability.

  How to learn it: Refactor a basic app implementation to follow MVVM principles and observe state management.

Preparation plan

1. Review fundamental computer science concepts and object-oriented programming principles in Java, Kotlin, or Swift.
2. Build a foundational understanding of mobile app lifecycles and UI implementation guidelines for either iOS (UIKit/SwiftUI) or Android (Jetpack Compose/XML).
3. Understand how mobile applications communicate with backend services via REST APIs and JSON data parsing.
4. Study common mobile architectural patterns including Model-View-ViewModel (MVVM) and Model-View-Controller (MVC).
5. Explore functional reactive programming principles and ReactiveX concepts as a supplementary skill.
6. Prepare to discuss your academic projects or personal mobile applications that demonstrate end-to-end understanding of mobile development.

Project ideas to show you can do the job

Interview guidance

• Brush up on core object-oriented programming concepts in Java, Kotlin, Swift, or Objective-C depending on your platform preference.
• Be prepared to discuss mobile architectural design patterns such as MVVM, MVP, and MVC, explaining how data flows through a mobile application.
• Practice explaining how you consume REST APIs, handle asynchronous operations, and build clean user interfaces on mobile.
• Highlight your problem-solving capabilities, communication skills, and willingness to learn new technologies and workflows during behavioral discussions.