Sleyter De La Cruz
Senior Full-Stack Engineer — React, TypeScript, AI
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Fanatics Betting and Gaming — Real-Time Sportsbook UI
Delivered the Teasers wagering feature end to end for a retail sportsbook platform. Built dynamic UI flows that updated calculations in real time as users adjusted selections, integrating live odds feeds via GraphQL. Coordinated with Java Spring Boot backend teams to ensure reliable state sync between UI and core services under low-latency conditions.
(Image not directly from Retail product but own solo mock)
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Clear Street — Portfolio Analysis Platform
Built an internal portfolio ingestion and analysis tool for a fintech prime brokerage. Designed the full frontend architecture to handle complex hierarchical data relationships across clients, portfolios, and positions. Used React, TypeScript, and AG Grid to deliver a grid-based interface that reduced manual review time and improved consistency across internal teams.
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