Location: Remote Employment Type: Full-Time / Contract\nRole Summary 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.\nThis 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.\nResponsibilities - 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. Requirements - 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. Nice to Have - 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.