Senior Android Developer (AdTech SDKs)

About the role

Sigma Software is hiring a Senior Android Developer for a remote role, working with distributed engineering teams to maintain and enhance scalable Android SDKs used in real mobile applications. The customer is a mobile advertising technology provider whose SDKs help mobile publishers monetize apps through in-app advertising, covering ad delivery, rendering, analytics and communication with ad platforms. The project focuses on native Android advertising SDKs distributed via Maven repositories and integrated into third-party apps.

Key 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
• Take part in release planning, validation and quality assurance
• Support external publishers during SDK integration and troubleshooting

Required profile

• 4+ years of commercial Android development experience
• Proven experience developing native Android SDKs or libraries
• Experience in release-critical environments and troubleshooting complex integration and compatibility issues
• Ability to work in a distributed team and good communication skills
• Upper-intermediate English or higher

Required skills

• Expert Android SDK and Kotlin; strong Java
• Strong Gradle and automated testing
• SDK packaging and distribution tools such as Maven Central, JitPack and Gradle plugins
• Versioning, release management and dependency handling
• Device-based testing

Plus: AI-assisted testing, mobile advertising and AdTech knowledge, SSP platforms and ad server experience, open-source SDK contributions and publisher integration support.

What we offer

• Diverse domains and businesses, variety of technologies
• Health and legal support, active professional community, continuous education
• Flexible schedule and remote work
• Office option, sports and community activities