L

Leon Lee

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Miami, Florida, United States

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Résumé

Jobs verified_user 0% verified
  • Hebbia
    Senior Software Engineer
    Hebbia
    Jul 2022 - Dec 2025 (3 years 6 months)
    Owned the React + TypeScript frontend for Hebbia's enterprise Al document search product, building the primary user workflows for query composition, Al answer review, and navigation between generated answers and source documents. Implemented backend integrations with Python services that power document ingestion, retrieval, and analysis, defining frontend-backend contracts and consuming structured APIs to support large document collections and complex query workflows. Integrated Retrieval-Augmented Generation (RAG) into the product UI, rendering LLM outputs alongside ranked document chunks and citations, so users could verify, refine, and trust Al-generated answers. Improved frontend performance for Al-heavy views by optimizing state manage
  • Vercel
    Senior Software Engineer
    Vercel
    Apr 2020 - Jun 2022 (2 years 3 months)
    Built and shipped Next.js + TypeScript features in the Vercel developer dashboard, mainly around project configuration and deployment workflows that developers use daily (environment variables, settings, and deployment state). Worked on Node.js backend endpoints that support the dashboard, wiring project metadata and configuration data into APIs consumed by the frontend and cleaning up edge cases that caused inconsistent state between Ul and backend. Improved dashboard performance for large accounts, where pages became slow due to many projects and deployments, by adjusting data-fetching patterns and reducing unnecessary re-renders in the frontend. Collaborated closely with designers and platform engineers to iterate on developer-facing fea
  • Datadog
    Software Engineer
    Datadog
    Jul 2017 - Mar 2020 (2 years 9 months)
    Worked on Datadog's React web Ul, mainly around dashboards and metrics views where users explore, filter, and visualize large volumes of monitoring data in real time. Built and maintained frontend features for charts, query configuration, and dashboard interactions, dealing with state complexity and keeping the Ul responsive as datasets and query combinations grew. Used D3.js for data visualization in performance-sensitive parts of the UI, integrating D3 primitives (scales, paths, axes) with React components to render time-series charts and custom visualizations efficiently. Contributed to backend services in Python and Go that power parts of the metrics and dashboard workflows, adding and adjusting APIs consumed by the frontend and helping
  • Huge
    Software Engineer
    Huge
    Jul 2015 - Jun 2017 (2 years)
    Worked on client-facing web applications built with AngularJS, contributing to real product features shipped for large enterprise clients in close collaboration with designers and product managers. Built AngularJS components, views, and form-heavy workflows, wiring them up to backend APIs and fixing Ul bugs as designs and requirements changed during client engagements. Contributed to Java-based backend services by adding and updating REST endpoints, helping support frontend feature work, and debugging issues where backend responses didn't match what the Ul expected. Did hands-on debugging across the stack, especially around frontend-backend integration, chasing down issues related to data shape, loading states, and error handling in distrib
Education verified_user 0% verified
  • Binghamton University
    Bachelor's Degree in Computer Science
    Binghamton University
    Aug 2012 - May 2015 (2 years 10 months)