Built a Chrome extension in TypeScript, Svelte, and Vite Bundler that enables instant gene lookup via text selection, displaying contextual metadata through the Chrome Extensions API Built an ETL pipeline (Node.js) to merge HGNC gene data with Ensembl REST API enrichment (genomic coordinates, biotype, description) via rate-limited batch requests, indexing the output by gene symbol for instant client-side lookups with no runtime API calls