Sergii Bielskyi, head of R&D at Eleks, outlines his expertise in distributed application architecture, specifically focusing on Dapr, a portable runtime for integrating different systems. The document details Dapr's capabilities, including its sidecar architecture, performance enhancements, and upcoming features such as support for new programming languages and integration with various frameworks. Additionally, it discusses practical applications of Dapr in IoT, providing links to resources, demos, and toolings for developers.