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Integral Solutions

Fullstack Mobile Developer (Kotlin) (m/k)

Integral Solutions Show all offers
B2B
Senior
Warszawa
Expires Oct 10, 2026
9 days ago

In short

Fullstack Mobile Developer (Kotlin) in Warszawa. Responsibilities include mobile feature development, backend services using Java/Spring Boot, and CI/CD. Requires strong mobile dev experience, Kotlin, Java/Spring Boot, and CI/CD knowledge.

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Technologies we use

About the project

This is how we organize our work

This is how we work

Team members

Your responsibilities

  • Build and improve mobile features used by real customers.
  • Develop shared business logic for mobile platforms, mainly using Kotlin Multiplatform (KMP)
  • Build backend services and APIs using Java/Kotlin and Spring Boot.
  • Work with cloud services, CI/CD pipelines, monitoring and production support.
  • Improve performance, reliability, security and user experience.
  • Use AI coding tools to help with development, testing, documentation and troubleshooting.
  • Work closely with product, design, architecture, security and platform teams.
  • Help define good engineering practices and mentor other developers.

Our requirements

  • Strong experience in mobile application development.
  • Deep understanding of iOS&Android Architecture Components.
  • Strong Kotlin skills and good understanding of modern mobile architecture.
  • Experience building production-grade apps with good quality, performance and maintainability.
  • Backend development experience with Java and Spring Boot.
  • Understanding of APIs, microservices and event-driven systems.
  • Experience with CI/CD, automated testing and production systems.
  • Ability to take ownership of a feature from design to production.
  • Good communication skills and ability to work with multiple teams.
  • Cross-platform experience: Our strategic direction is Kotlin Multiplatform, because it lets us reuse business logic while still keeping native-quality mobile experiences.

Optional

  • Experience with Kafka or other message broker / queue management tools.
  • Strong communication and teamwork skills
  • Ability to thrive in a fast-paced, dynamic environment
  • Proactive, “Can-Do” attitude
  • Strong problem-solving and system-thinking abilities

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Benefits

Published 2026-09-10
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