Worked on foundational serverless API capabilities for the qdrant/qdrant-cloud-public-api repository, focusing on expanding cloud public API functionality. The work centered on designing and updating Protocol Buffer definitions in Go to support new serverlessCluster and serverlessCollection services, with an emphasis on maintainability and forward compatibility. Refactoring efforts clarified proto structures, while new fields were introduced to enable scalable serverless usage. Security was enhanced by implementing API key management for collections, strengthening access control. The approach demonstrated a strong grasp of API design, Protocol Buffers, and gRPC, delivering a robust foundation for future serverless features within the cloud services environment.