Summary: We are porting a desktop physics engine to Android. You will own the NDK build, JNI API, low-latency audio pipeline (Oboe/AAudio), and Kotlin UI. Requirements: • 5+ years C++ (C++17) and 2+ years Android NDK (Gradle+CMake). • Shipped at least one low-latency audio or high-performance NDK app. • Strong DSP numerics (FFT, convolution) and multithreading (atomics, lock-free). • Kotlin/Compose proficiency; coroutines; clean architecture. • Experience with NEON, Perfetto/simpleperf, and crash/ANR reduction. Pluses: • Vulkan/OpenGL ES visualization or compute. • Experience replacing desktop deps with mobile-friendly ones. • Past work in acoustics, spatial audio, or scientific computing.