Senior Android SDK Engineer

We are looking for a Senior Android SDK Engineer to own and evolve the Android SDK written in Java, enabling internal and partner applications to integrate reliably with our REST APIs.

This is a platform / SDK engineering role focused on stability, performance, backward compatibility, and developer experience. You will work closely with Backend, iOS, and Web teams to ensure consistent behavior across platforms.

• Design, develop, and maintain the Android SDK using Java.
• Build SDK APIs that wrap company REST services.
• Ensure SDK stability, performance optimization, memory efficiency, and safe behavior within host applications.
• Own SDK versioning, releases, and backward compatibility.
• Build and publish SDK releases as Maven dependencies hosted in JFrog Artifactory.
• Write and maintain unit and integration tests using JUnit and Mockito.
• Maintain SDK documentation and developer integration guides.
• Collaborate with Backend, iOS, and React engineers to align API contracts and client behavior.

• 5+ years of Android development experience with strong proficiency in Java.
• Proven experience building and maintaining Android SDKs, libraries, or reusable components.
• Strong experience consuming REST APIs, including authentication, retries, and error handling.
• Experience with Maven/Gradle dependency management and publishing libraries.
• Experience working with JFrog Artifactory.
• Hands-on experience with JUnit and Mockito.
• Proficiency with Git and CI/CD pipelines.

• Kotlin experience and interest in Android modernization.
• Experience with OkHttp and/or Retrofit.
• SDK-level logging, diagnostics, or error modeling experience.
• ProGuard / R8 configuration for SDK consumers.
• Experience collaborating across iOS, React, or React Native platforms.