Kotlin Multiplatform Developer

Kotlin Multiplatform Developer (KMP)

Location: Warsaw, Poland (Hybrid – 4 days per month in the office)
Contract: B2B via Experis
Start Date: ASAP / up to 30 days notice

About the Role

We are looking for a Senior Kotlin Multiplatform Developer to design and deliver modern cross-platform applications. You will be responsible for building shared business logic and data layers, integrating solutions across Android and iOS, and contributing to architecture and technical standards.

Requirements

• 5+ years of software development experience

• 2+ years of commercial Kotlin experience

• 1+ year of hands-on Kotlin Multiplatform (KMP) experience

• Experience delivering at least one production-grade multiplatform application

• Strong knowledge of:

  • Kotlin, Coroutines, Flow

  • Kotlin Multiplatform (KMP)

  • Android (Jetpack Compose, ViewModel, Hilt/Koin)

  • iOS integration with Swift/SwiftUI

  • Clean Architecture, MVVM/MVI

  • REST APIs, GraphQL

  • Unit and integration testing

  • Gradle and CI/CD (GitHub Actions or GitLab CI)

Nice to Have

• Compose Multiplatform

• Ktor

• Kotlin/JS or WebAssembly

• Advanced CI/CD knowledge

• Domain-Driven Design (DDD)

What We Offer

• Long-term B2B cooperation via Experis

• Hybrid work model (4 days/month from Warsaw office)

• Medicover private healthcare

• Multisport card

• Group life insurance

• Access to e-learning platforms