Kotlin Multiplatform Mobile Engineer — Remote

Integral Solutions - Data & AI; Województwo mazowieckie; Remote; PLN 317,000 - 366,000; Full time

Job summary

Integral Solutions - Data & AI is seeking a Kotlin Multiplatform Developer to join a remote-first team building a leading digital payments platform. You will develop shared mobile logic using Kotlin Multiplatform and contribute to backend services with Java/Kotlin and Spring Boot, while embracing modern tooling and AI-assisted development.

This B2B role from Poland offers flexible remote collaboration, hands-on ownership of features from design to production, and work with cloud services, CI/CD

Qualifications

• Experience with Kotlin Multiplatform (KMM/KMP) required.
• Backend development with Java and Spring Boot is a strong plus.
• Strong knowledge of mobile architecture and API design.
• Ability to own features end-to-end in a fast-paced environment.

Responsibilities

• Develop shared mobile logic for Kotlin Multiplatform and contribute to backend services.
• Build and improve mobile features used by real customers.
• Develop backend services and APIs using Java/Kotlin and Spring Boot.
• Work with cloud services, CI/CD pipelines, monitoring and production support.
• Use AI coding tools to assist development, testing, and documentation.
• Collaborate with product, design, architecture, security and platform teams.
• Improve performance, reliability, security and user experience.

Skills

Kotlin Multiplatform

KMM/KMP

Java

Spring Boot

CI/CD

APIs

Microservices

Event-driven

Android Architecture

iOS Architecture

Production-grade apps

Testing

Tools

Kafka

Job description

Integral Solutions - Data & AI is seeking a Kotlin Multiplatform Developer to join a remote-first team building a leading digital payments platform. You will develop shared mobile logic using Kotlin Multiplatform and contribute to backend services with Java/Kotlin and Spring Boot, while embracing modern tooling and AI-assisted development.

This B2B role from Poland offers flexible remote collaboration, hands-on ownership of features from design to production, and work with cloud services, CI/CD