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Case studies

Systems I designed and built at Nordic Analytics

Flat search across 10 years of financial news About 25 million articles scanned for every topic timeline. From about a minute on Elasticsearch to under five seconds with FAISS and Ray. FAISS · Ray · Elasticsearch · Polars Streaming a live order book with Kafka Level II market depth from Interactive Brokers, through Kafka, to multiple independent readers. Consumers resume after a crash. Python · Kafka / Redpanda · WebSocket One trusted price from three data sources Minute bars for about 16,000 securities. A fixed source order, Polygon then Interactive Brokers then internal data, and a repeatable fix for stock splits. Python · Polygon · Interactive Brokers · ClickHouse