Senior Mobile Engineer - iOS/Android, SDKs & Native Interop

SEIDOR; Strasbourg; Hybrid; EUR 70,000 - 95,000; Full time

Job summary

SEIDOR is seeking a Senior iOS/Android Developer to join our hybrid team in Strasbourg. The role focuses on developing and maintaining mobile libraries, integrating native C/C++ code, and delivering reusable SDKs and integration interfaces.

You will design wrappers, implement packaging and distribution mechanisms, and write automated tests while collaborating with architects and domain experts to ensure robust, scalable mobile solutions.

Qualifications

• 8+ years of professional software development experience.
• Strong Android or iOS development with native library integration.
• Proficiency in Kotlin/Java for Android or Swift/Objective-C for iOS.
• Experience building reusable libraries, SDKs, APIs, and integration components.
• Experience implementing data parsers, validation logic, and robust error handling.
• Knowledge of memory ownership, concurrency, and language interoperability.
• Experience with automated testing, dependency management, and release processes.
• Strong analytical, problem-solving, and collaboration skills.

Responsibilities

• Develop and maintain Android and iOS libraries and apps.
• Design wrappers and APIs to integrate native C/C++ libraries.
• Develop reusable libraries, SDKs, and integration interfaces.
• Implement platform-specific packaging, distribution, and diagnostics.
• Develop data parsers, validation rules, and diagnostic reporting.
• Translate specifications into robust, maintainable software solutions.
• Design and execute automated tests for functionality and integration.
• Investigate defects, troubleshoot issues, and optimise performance.
• Collaborate with software architects, C++ engineers, and domain specialists.
• Participate in code reviews and maintain integration documentation.

Skills

Android development

iOS development

Kotlin

Swift

C/C++ interoperability

Automated testing

GitHub workflows

CI/CD

JNI

XCFrameworks

Android Studio

Xcode

Gradle

Jira

Confluence

Tools

Android Studio

Xcode

Gradle

JNI

XCFrameworks

GitHub

Job description

SEIDOR is seeking a Senior iOS/Android Developer to join our hybrid team in Strasbourg. The role focuses on developing and maintaining mobile libraries, integrating native C/C++ code, and delivering reusable SDKs and integration interfaces.

You will design wrappers, implement packaging and distribution mechanisms, and write automated tests while collaborating with architects and domain experts to ensure robust, scalable mobile solutions.