Rust(backend). Working in a backend team to supporting and delivering artificial intelligence functions in a video communication platform. Half of the time I worked as an architect of new functionality and improvements to the old one, the other half of the time was spent directly developing in the Rust language. We have dozen microservices running in kubernetes with grpc as communication layer, kafka for the event source processing, mongodb as the storage.

Java(backend music service). Development of the music service backend as a social network component. Responsible for the microservices architecture, internal/external API, audio fingerprints, creation of music catalogs, programming communication with copyright owners, ect. The service includes dozen of functional modules deployed on 4 data centers in hundreds of cloud instances. At high loads tens of millions audio playbacks per day.Java(backend platform team). R&D of distributed highly available and fault-tolerant key values database based on project Voldemort. It is used in OK.ru to maintain hundred terabytes of highly available data on more than hundred nodes with rps per node more than 10K.

Java(backend). R&D of the MARS distribution monitoring/reporting system. Proprietorial system with same functionality as zabbix. It is used to monitor clusters with hundreds of trading servers in real time.

Java/C++(full stack). R&D of VOIP (sip) 3rd party call control part for business process automation system in BPMN specification