Igor Volkovskyi

Developed backend services and internal APIs powering real-time data delivery for trading and business platforms. Analyzed and optimized complex SQL queries, integrated internal services and external data sources, implemented ETL/data transformation workows. Designed and implemented scalable data retrieval and aggregation solutions for large-scale datasets.

Designed and delivered features for a high-load Java monolith used for OLAP and large-scale analytical processing. Investigated and resolved memory leaks, concurrency issues. Designed observability and monitoring solutions using Prometheus, Grafana. Drove migration of the OLAP cube framework through breaking API changes.

Designed and implemented backend APIs serving as a central data provider for multiple internal systems. Built batch and real-time ETL/data ingestion pipelines integrating external nancial providers and processing high-volume datasets.