Vladimir Deriagin

- Developed a tool for efficient Kafka topic consumption, reducing data retrieval time from days to minutes. - Designed and implemented a module to resolve critical data security issues, creating an adaptable data provider based on environment configurations. - Built a scalable data filtering framework that improved query performance by 800-1000x, drastically enhancing data processing efficiency. - Introduced scheduled load testing with continuous monitoring

- Designed and implemented scalable APIs and background workers for the supply distribution forecasting and the digital goods selling in one of the country's largest e-commerce companies with 32M active buyers and more than 150M SKUs using the latest technologies of .NET, gRPC, linq2db, PostgreSQL, Apache Kafka, Docker, Kubernetes, Grafana, GitLab CI/CD and others. - Enriched system metrics by integrating the services with telemetry, alarms and dashboards. - CI/CD, MR, CR, unit-/integration- testing.

- Contributed to the bank’s digital transformation efforts, enhancing the scalability and flexibility of core systems to support evolving business needs. - Developed and optimized payment services for the bank’s small and medium business application, utilizing .NET, Entity Framework, MS SQL, SOAP, Rebus, and GitLab CI/CD to build secure, efficient, and reliable solutions. - Led refactoring and optimization initiatives for legacy monolithic codebases, significantly improving performance and maintainability.