Alexey Genus developed coroutine-based Kotlin gRPC stubs for the spring-grpc repository, enabling seamless asynchronous programming by integrating CoroutineStubFactory into Spring Boot’s auto-configuration. This work improved developer ergonomics for gRPC clients using Kotlin coroutines, with comprehensive tests validating stub creation and usage. In the micrometer-metrics/micrometer repository, Alexey enhanced metrics reliability for Loom-based workloads by introducing robust error handling in VirtualThreadMetrics, specifically catching IllegalArgumentException during MXBean retrieval to prevent crashes. Throughout the two-month period, Alexey demonstrated depth in Java, Kotlin coroutines, and metrics instrumentation, focusing on practical solutions that improved both developer experience and system observability.