Senior iOS Engineer - Kotlin Multiplatform & SwiftUI

b3consultingpoland; Warszawa; Hybrid; PLN 190,000 - 290,000; Full time

Benefits offered by this job

Scandinavian culture

Health and sports benefits

Speed Coaching

Sports training and competitions

Job summary

B3 Consulting Poland is hiring a Senior iOS Developer to build a Kotlin Multiplatform mobile app for a TMS-class system and to help shape the architecture in a cross-functional team.

You will work on shared KMP layers and the native iOS SwiftUI layer, with code reviews, tests, and architectural documentation ensuring high quality and scalability.

The role is based in Warsaw and offers a chance to contribute to international projects while growing technically in a Scandinavian-influenced culture.

Qualifications

• Extensive SwiftUI experience with advanced layouts, state management, and performance optimization.
• Strong knowledge of mobile architectures: MVVM, Clean Architecture, SOLID.
• Hands-on Kotlin Multiplatform (KMP) development experience.
• English at min. B2, Polish at least C1.
• Eligibility to work in Poland.

Responsibilities

• Build a mobile application for a Transport Management System from scratch, supporting transport and logistics processes.
• Co-create a newly formed mobile task force with real impact on architecture, foundations, patterns and shared components.
• Develop the shared Kotlin Multiplatform layer and the native iOS layer in SwiftUI, including tests, code reviews and architecture documentation.

Skills

SwiftUI experience

Mobile architectures

Kotlin Multiplatform (KMP)

Swift Concurrency

English (B2)

Polish (C1)

Eligibility to work in Poland

Tools

Swift Package Manager

CI/CD (Fastlane, pipelines)

Job description

B3 Consulting Poland is hiring a Senior iOS Developer to build a Kotlin Multiplatform mobile app for a TMS-class system and to help shape the architecture in a cross-functional team.

You will work on shared KMP layers and the native iOS SwiftUI layer, with code reviews, tests, and architectural documentation ensuring high quality and scalability.

The role is based in Warsaw and offers a chance to contribute to international projects while growing technically in a Scandinavian-influenced culture.