I had an opportunity to be part of the team that started company cloud transformation. As a member of a team, I've designed, implemented or lead following parts of platform framework that offers: - Multitenancy: Our external requirements leads to solution that uses uncommon approach: tenant databases should be separated from each other. The implementation is based on DBaaS and Java/Go libraries for context propagation. - Application configuration: First, we extending Spring ConfigServer and use it as config source, then we replace it by HashiCorp Consul. Consul KV storage, spaces isolation and integration with application scoped identity providers. - Service-Mesh: Design and develop in-house service-mesh based on Envoy with centralized control-plain service. - DB-as-a-Service: One of the central unit platform framework, that offers runtime database creation on microservice request. Tightly coupled with multitenancy feature. - Messaging-as-a-Service: Provides application/microservice configuration rollout on RabbitMQ/Kafka messaging brokers. Tightly coupled with multitenancy feature. Also supports and play a key role in blue/green application rollout. - Blue/Green design, deployment and integrations: This is big feature that involves all layers through development and application structure to DevOps processes. Service-Mesh request context propagation and requests routing. Blue/Green propagation on messaging (RabbitMQ and Kafka). - Resiliency and High Availability: design and implement various aspects of core services high availability, clustering, sharding, caching and so on. - Monitoring, Logging and Profiling: Create platform for application monitoring, alerting and logging. Investigate and fix performance problems

Design and develop applications for Russian Museums: - exhibits accounting system - exhibits public web catalogs - exposition systems (kiosks and web) Responsible to create, recruit and manage IT department: - Java/Scala/Oracle developers - Operations/Administrators team - QA team Windows, Linux, Scala, Python, JavaScript, HTML, Oracle, Apache Lucene, Adobe Director, Adobe Flash etc

Develop specialized company CRM solution from scratch. Java, j2ee, MySQL, Apache Lucene

Develop proprietary Content Management System and create Web Sites based on it PHP, MySQL, Linux