Senior Android SDK Engineer

Location: Remote Employment Type: Full-Time / Contract Role 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. 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. Responsibilities • 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.