Senior Mobile Developer (Kotlin Multiplatform)

Job Description

Drive the Future of Kotlin Multiplatform in our Organization and make an impact!

We're looking for a Senior Mobile Developer to drive Kotlin Multiplatform adoption in our team and build high-quality native applications. If you're proficient in Kotlin and Swift (even at different levels), enjoy working in an agile environment and are passionate about clean, maintainable code, we’d love to hear from you!

About Droids On Roids ⚡️

At the beginning of 2025, Droids On Roids joined forces with Apadmi, one of the UK's leading digital product agencies, unlocking even more opportunities for innovation in mobile development.

We work with top startups and global brands like CCC, Carlsberg, Vodafone, BBC, and Co-op, delivering high-quality code and an agile approach they trust. But don’t just take our word for it - see what our clients say on Clutch.co.

The Role 

As our Senior Mobile Developer, you will be responsible for driving the development of native mobile apps using Kotlin Multiplatform. Your expertise will guide the architecture and technical direction of the projects, while also mentoring and supporting other developers in best practices.

What You’ll Be Doing:  

• Developing native mobile applications for Android and iOS using shared Kotlin Multiplatform code,
• Working with both Kotlin and Swift codebases,
• Delivering entire features, including UI, state management, business logic, and backend communication,
• Writing automated tests and working with the CI/CD process, 
• Shaping the application architecture, and ensuring high code quality,
• Contacting with clients, product owners, and business analysts,
• Collaborating with developers and QA engineers in Agile teams,
• Mentoring and supporting other developers by sharing knowledge, conducting code reviews, and promoting best practices in Kotlin Multiplatform development.

Requirements

• At least 3 years of experience as a Mobile Developer,
• Knowledge of Kotlin and Swift languages,
• Experience with Kotlin Multiplatform (KMP),
• Knowledge of design patterns used in mobile applications,
• Experience working with MVVM or MVI architecture, 
• Proficiency in UI frameworks: SwiftUI, Jetpack Compose, and UIKit,
• Experience with Dependency Injection,
• Ability to implement HTTP communication using Ktor Client,
• Ability to work with asynchronous code using Kotlin Coroutines and Swift Concurrency, 
• Skills in writing automated tests,
• Ability to write clean, simple, and testable code,
• Knowledge of Google-recommended app architecture or Clean Architecture,
• Experience working with multi-module applications,
• Great communication and time-management skills,
• Fluent communicator in English and Polish, written and spoken (minimum B2 level). 
  
  Extra points:

• Knowledge of Compose Multiplatform,
• Ability to manage dependencies using Koin library,
• Experience in working with Git submodules, KMMBridge or Monorepos,
• The understanding that changes are natural, so you can thrive in a fast-paced environment, adapt to changing priorities, and manage different projects simultaneously. :)

Recruitment process: 

Submit an application form - it’s the best way for us to get to know you!

1. Answer a few questions during an initial hangouts call with our Mobile Team - max. 30 m.
2. Join a remote interview (soft and technical part - pair programming) with Mobile Team, and Talent Acquisition Specialist - max. 2 h.
   

Welcome aboard! :)

Salary:

115 - 160 pln/h + VAT (B2B)

15 750 - 21 500 pln/gross (UoP)