Senior Android & iOS developer

Swedium Global Services AB; Oulu; Hybrid; EUR 70,000 - 90,000; Full time

Job summary

Swedium Global Services AB in Oulu, Finland, is seeking a Senior Android & iOS Developer to modernize and maintain high-quality mobile apps for the banking sector.

You will work with Kotlin, Jetpack Compose, Swift and modern mobile practices, migrating UI to Jetpack Compose, implementing automated tests, and collaborating with designers, backend developers, QA, architects and business stakeholders.

Qualifications

• Proficient in Kotlin and Swift for Android and iOS development.
• Experience with Jetpack Compose and modern mobile UI patterns.
• Familiarity with Git, Gradle, and automated testing practices.

Responsibilities

• Design, develop, implement, and maintain Android and iOS apps.
• Migrate UI to Jetpack Compose and modernize legacy views.
• Refactor UI components per design systems and libraries.
• Implement automated UI tests and unit tests.
• Collaborate with designers, backend teams, QA, and stakeholders.

Skills

Kotlin

Jetpack Compose

Swift

Git

Java

Gradle

Mobile testing

Modern mobile dev

Tools

IntelliJ IDEA

Espresso

XCTest

Job description

Swedium Global is a growing System Engineering and Solution Company offering services such as Semiconductor Engineering R&D Services, Embedded Systems Development, Custom Application Software Development, Web and Cloud Application Development, Testing Services, Consultancy, and Outsourcing services to clients across the globe through both onsite and offshore business models.

Swedium Global has a presence in Sweden, Finland, Poland, the Czech Republic, and India.

We are looking for a Senior Android & iOS Developer for our customer in the banking sector.

Profile/Role: Senior Android & iOS Developer
Location: Oulu, Finland
Work Model: Hybrid
Language: Fluent English
Domain: Banking / Financial Services

About the Role

The role involves developing, modernizing, and maintaining high-quality Android and iOS mobile applications. The developer will work extensively with Kotlin, Jetpack Compose, Swift, and modern mobile development practices.

The position includes modernizing existing applications by migrating legacy View-based UI implementations to Jetpack Compose, improving custom UI components, implementing automated testing, and contributing to scalable and maintainable mobile solutions.

You will collaborate closely with designers, backend developers, QA engineers, architects, and business stakeholders to deliver reliable, secure, and customer-focused mobile applications.

Key Responsibilities

• Design, develop, implement, and maintain high-quality Android and iOS applications.
• Develop Android applications using Kotlin and Jetpack Compose.
• Develop and maintain iOS applications using Swift.
• Modernize existing applications by migrating legacy View/XML-based UI implementations to Jetpack Compose.
• Refactor custom-built UI components according to standardized design systems and UI component libraries.
• Follow mobile development best practices to create maintainable, scalable, and reusable solutions.
• Develop and maintain automated UI tests using Espresso and XCTest/XCUnit.
• Create and maintain unit tests and other verification activities.
• Participate in feature design, implementation, testing, release, and maintenance activities.
• Analyze application behavior and troubleshoot technical issues.
• Improve application performance, stability, quality, and user experience.
• Collaborate with designers, backend developers, QA teams, architects, and business experts.
• Work with Git for source code management and version control.
• Use Gradle for Android build and dependency management.

Core Technical Skills — Must Have

• Strong professional experience with Kotlin.
• Strong hands-on experience with Jetpack Compose.
• Professional experience with Swift and iOS development.
• Strong experience with Git.
• Good working knowledge of Java.
• Experience with Gradle.
• Experience with mobile application testing and quality assurance.
• Strong understanding of modern mobile application development practices.

Preferred Skills

• Objective-C
• Material Design
• View/XML-based UI
• XCTest / XCUnit
• IntelliJ IDEA
• UI and Unit Testing
• Design Systems

Required Skills

Job Overview

• Vacancy : 1