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Sii Poland

Kotlin Multiplatform Developer (f/m/x)

Sii Poland
Ukraine · Full-time · Mid-Senior

We are looking for a Senior Mobile Developer with strong expertise in multiplatform development, particularly Kotlin Multiplatform, to join a project for a multinational healthcare company that develops and markets medical devices, aiming to improve the lives of people with intimate health conditions. The project focuses on building secure, accessible, and innovative mobile solutions that enhance patient experiences worldwide.

Your tasks

  • Design and develop cross-platform mobile features using Kotlin Multiplatform
  • Build and maintain shared business logic across Android and iOS platforms
  • Integrate mobile applications with connected smart devices and data sources
  • Ensure secure data handling and reliable communication between the app and hardware
  • Collaborate closely with backend developers, UX/UI designers, and product owners
  • Implement and promote accessibility best practices to support diverse user needs
  • Participate in code reviews and contribute to the continuous improvement of mobile architecture
  • Support testing, debugging, and performance optimization of the mobile application
  • Document technical solutions and implementation decisions

Requirements

  • At least 5 years of commercial experience in mobile application development
  • Hands-on experience with Kotlin Multiplatform
  • Strong knowledge of Kotlin and modern mobile development practices
  • Understanding of cross-platform architecture and shared code design
  • Experience working with mobile apps that interact with hardware or IoT devices
  • Familiarity with accessibility standards in mobile applications
  • Ability to translate product and user requirements into technical solutions
  • Strong collaboration skills and experience working in cross-functional teams
  • Good command of English
  • Tax residence in Ukraine is required

Nice to have

  • Experience in healthcare, medical, or well-being-related projects
  • Knowledge of Bluetooth or real-time data communication
  • Experience with security-sensitive or privacy-focused mobile applications
  • Familiarity with Android and iOS native development environments
  • Understanding of usability challenges for users with specific health conditions

Job no. 260429-KFJBK

Sii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.

Benefits For You

Refferals program

Solid financial situation

Many experts you can learn from

Contracts with the biggest brands

Mentoring program

14 authentic core values

Inclusive culture based on dialogue

Regular integration events and trips

Passion Sponsorship Program

Open and accessible management team

Profit sharing

Welcome packs & occasional gifts

Key Skills

Ranked by relevance

kotlin android ios
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Posted
May 24, 2026
Type
Full-time
Level
Mid-Senior
Location
Ukraine
Company
Sii Poland

Industries

IT Services IT Consulting

Categories

Other

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