Remote Senior Android SDK Engineer - AdTech

Sigma Software; Kraków; Remote; PLN 180,000 - 260,000; Full time

Job summary

Sigma Software is seeking a Senior Android Developer to join a project delivering native Android SDKs used by publishers worldwide. You will work on production-grade mobile engineering, focusing on scalability, reliability, and release-ready software.

In this remote role, you will collaborate with distributed teams to design, package, test, and maintain SDKs across Maven ecosystems, ensure backward compatibility, and support publishers during integration.

Qualifications

• 4+ years of commercial Android development experience.
• Strong Kotlin and Java experience.
• Proven experience developing native Android SDKs or libraries.
• Strong understanding of Android SDK architecture and lifecycle.
• Hands-on experience with Maven Central, JitPack, and Gradle plugins.
• Experience with versioning and release management.
• Practical experience with automated and device-based testing.
• Experience working in release-critical environments.
• Strong communication in distributed teams.
• Upper-Intermediate English level or higher.

Responsibilities

• Develop, enhance, and maintain native Android SDKs used in production environments.
• Implement new SDK features and improve existing functionality.
• Ensure SDK stability, backward compatibility, and release quality.
• Design and support SDK architecture, packaging, versioning, and release processes.
• Maintain Maven and Gradle distribution pipelines.
• Create and maintain automated and device-based testing solutions.
• Investigate and resolve SDK defects, integration issues, and publisher-reported problems.
• Collaborate with cross-functional teams to improve SDK reliability and performance.
• Participate in release planning, validation, and quality assurance activities.
• Support external publishers during SDK integration and troubleshooting.

Skills

Kotlin

Java

Android SDK

Architecture

Release management

Testing

Debugging

Communication

Tools

Maven Central

JitPack

Gradle plugins

Gradle

Job description

Sigma Software is seeking a Senior Android Developer to join a project delivering native Android SDKs used by publishers worldwide. You will work on production-grade mobile engineering, focusing on scalability, reliability, and release-ready software.

In this remote role, you will collaborate with distributed teams to design, package, test, and maintain SDKs across Maven ecosystems, ensure backward compatibility, and support publishers during integration.