SOFTWARE ENGINEER/ MOBILE SDK

Type: Contract, per-project. Location: Remote — European Time Zones (CET/CEST) Availability: Contractor (40 hours per week) We are looking for a highly capable Android Software Engineer to join our Mobile SDK team and contribute to the core libraries that power our applications and the SDKs used by third-party device manufacturers and application developers. In this role, you will design and build features that perform a wide variety of network tests using Kotlin to access and exercise device hardware, C++ and Kotlin Multiplatform for cross-platform functionality, and Java to support legacy SDK products. You will work on SDK and application code, with a focus on designing well-structured APIs and building reliable, reusable software. EXPECTATIONS FOR SUCCESS - Develop and maintain SDKs that provide network testing functionality to third-party device manufacturers and application developers, including design, implementation, testing, documentation, deployment, development support, and maintenance. - Build solutions with a focus on reliability, flexibility, portability, and code reuse. - Integrate analytics to ensure optimal performance of deployed code. - Collaborate on architecture, technology choices, and interactions with other core components, including frontend code, backend APIs, and distributed server infrastructure. REQUIREMENTS - 5+ years of software development experience with a solid foundation in data structures, algorithms, and design patterns. - 3+ years of professional Android development experience, including experience with the application submission and review process. - Experience working on multiple projects and the ability to learn new projects efficiently. - Expertise in Kotlin and Java. - Solid understanding of Android SDK development, threading, the Android Framework, networking frameworks (OKHTTP and TCP Sockets), and cross-platform library design. - Strong understanding of networking fundamentals, including IP, TCP/UDP, HTTP/S, and WebSocket. - Experience writing unit, integration, load, and stress tests. - Proficiency with collaborative development workflows, including branches, pull requests, and continuous integration practices. - Excellent debugging and troubleshooting skills. - Strong time management skills and a self-driven work ethic. PREFERRED QUALIFICATIONS - Experience with C++. - Experience with Swift. - Contributions to open source projects.