sheeny

Led migration of a legacy Aurelia-based trading portal to SvelteKit, rewriting 120+ components to leverage SSR and reactive stores; delivered 50% faster load times and a 45% reduction in bundle size for the client. Developed a Svelte component library with theming and accessibility compliance (WCAG 2.1 AA), used across multiple crypto dashboards and NFT marketplaces. Implemented a TypeScript + .NET7 on/off-ramp SDK integrating with Stripe and Ethereum smart contracts, facilitating $2M+ in user transactions with 99.8% uptime. Established CI/CD pipelines (GitHub Actions, Docker) and Sentry monitoring for all projects, reducing deployment errors by 65%.

Architected a cross-platform React Native wallet and accompanying Svelte admin dashboard to monitor real-time transactions; handled 150K+ daily transactions with sub-200ms confirmation times. Built a Redis caching layer for on-chain data and implemented GraphQL endpoints, decreasing API response times by 50% and cutting infrastructure costs by 30%. Collaborated on PCI DSS-compliant payment integrations for fiat on-ramp, leveraging WebSocket streams for live price updates.

Developed and audited Solidity smart contracts for NFT staking, governance, and in-game token economies; secured $2M+ in assets under management without security incidents. Designed a Svelte dashboard for GuildDAO voting and real-time proposal tracking, boosting community participation by 35%. Implemented a CQRS pattern with .NET Core backend services, supporting 20K+ concurrent users during peak gaming events.