Senior Mobile SDK Developer (Android)

<p>We’re seeking a Senior Android SDK Developer to lead the development of a reliable, scalable, and user-friendly SDK used by customers worldwide.</p><p><strong>Key Responsibilities:</strong></p><ul> <li>Design, build, and maintain the Acoustic Connect Android SDK, enabling enterprise-grade customer engagement features for mobile apps.</li> <li>Deliver high-quality, performant, and scalable SDK modules that integrate seamlessly with client applications.</li> <li>Take ownership of the full SDK lifecycle: from architectural design to public documentation and ongoing developer support.</li> <li>Continuously improve SDK codebase with best practices in modularity, testability, and maintainability.</li> <li>Refactor or retire legacy code and modules, aligning the SDK with modern Android best practices (Jetpack Compose knowledge is a must) and long-term maintainability.</li> <li>Proactively identify performance bottlenecks and lead improvements using profiling tools</li> </ul><p><strong>Requirements</strong></p><ul> <li>Minimum 5 years of experience in mobile app development.</li> <li>Proven ability to develop concise and lightweight SDKs with excellent performance.</li> <li>Deep understanding and experience with Kotlin and Java.</li> <li>Knowledge of Android app lifecycle, memory management, and performance optimization techniques.</li> <li>Knowledge of best practices for API versioning, backwards compatibility, and public API design.</li> <li>Keeping up to date with Android ecosystem changes (new APIs, OS behaviors, privacy changes) and applying them in SDK development.</li> </ul><p><strong>What will set you apart?</strong><br/></p><ul><li>Any experience with iOS SDK development, Flutter, or React Native is a bonus.</li></ul><p></p><p><em>Not checking all of the above boxes but still feeling strong about a career in software development? We want to hear from you anyway!</em></p><p><strong>Benefits</strong></p><p><strong>What We Offer:</strong></p><ul> <li>Direct impact on our product and three growth paths: Architect, Principal Software Engineer, or Manager.</li> <li>Remote or hybrid work from our Gdansk office (up to you!)</li> <li>Competitive benefits, including tax-deductible costs, MacBook Pro, medical and life insurance, meal allowance, and a Multisport card.</li> </ul><p><strong>We believe in an efficient and candidate-focused recruitment process:</strong></p><ul> <li>30-minute screening and language check by our Talent Acquisition Partner.</li> <li>Up to 120-minute interview with the hiring manager and senior team members, covering general and technical aspects of the role (including coding).</li> </ul>