marcioecom

A crypto market maker providing liquidity services across major centralized and decentralized exchanges. Solely architected and developed a geospatial intelligence platform from the ground up, utilizing NestJS, Microservices, and PostGIS for spatial data modeling. Engineered a high-performance ETL pipeline ('Sequoia') to process 12 million+ records, utilizing Node.js Streams and Postgres COPY to handle massive CSV and Shapefile ingestion with minimal memory footprint. Designed a scalable asynchronous processing architecture using BullMQ and Redis, orchestrating worker queues to handle heavy data insertion batches (5k records/batch) without blocking the event loop. Built a custom Vector Tile pipeline for frontend visualization, automating the conversion of GeoJSON to PMTiles (via Tippecanoe) and serving data via Martin for optimized Mapbox rendering. Maintained and optimized the crypto Data Collector, enhancing exchange integrations and ensuring reliable storage of snapshots and trades into ClickHouse.

Klever is a financial services company within the crypto ecosystem. Core System Refactoring Led the architectural refactoring of a critical custody service managing over $1M in assets, ensuring secure liquidity provision and high availability. Performance Optimization Re-engineered legacy services to support concurrent processing, achieving a 10x reduction in application startup time and significantly improving throughput. Internal Tooling Designed and built developer experience DX tools, including custom SDKs and CLIs, to standardize integrations and accelerate internal development cycles. Trading Automation Developed automated trading bots and execution strategies, ensuring reliable operation within the crypto ecosystem.