Full Stack AI Engineer

Built and shipped a live paid multi-model AI application using Next.js, TypeScript, Vercel AI SDK, XState, Supabase, Clerk, and Polar. Developed the streaming UI and an XState v5 actor system that orchestrates 13 AI models through Vercel AI Gateway with fallback routing and an interactive manual handoff mode.

Implemented usage-based billing end to end, including pre-stream credit gating, idempotent Redis settlement, wallet-limit stream protection, Polar webhooks, and reconciliation against gateway receipts. Modeled an append-only PostgreSQL entitlement ledger with Clerk-based row-level security, added Spanish localization and Sentry alerting, and delivered more than 1,500 Vitest tests.

Improved initial page-load performance for an ArcGIS-powered enterprise application through lazy-loaded components, memoized computations, normalized data, and lower-complexity global-state accessors.

Completed a technical-debt assessment and upgraded outdated Material UI, ArcGIS SDK, Node.js, and TypeScript dependencies. Mentored engineers through pull-request reviews, pair programming, and walkthroughs covering React, Redux, TypeScript, state management, and performance optimization.

Built the ordering and payment flow for the Rev Voice Recorder iOS and Android application from scratch. Integrated GraphQL queries for dynamic pricing, payment methods, and AI transcript order placement.

Added native iOS functionality in Swift, including Quick Actions, an App Intent for starting recordings, and a Share Extension, and connected these features to the React Native hybrid codebase.

Won and delivered multiple client contracts through direct outreach, managing work from proposal through delivery. For Studdy AI, built a real-time LaTeX rendering engine using XState, chunk queuing, actor isolation, WebView postMessage bridges, and optimized selectors to prevent rendering stalls and cascading rerenders.

Built the Translate Lens feature and more than 10 reusable components that formed the foundation of the product design system. For ShowZone, migrated a Next.js tier builder to @dnd-kit with multi-container drag and drop, portal overlays, optimistic state cloning, and rollback handling; also led Agile web projects and mentored junior developers.

Built and maintained web and React Native applications for more than seven clients, including responsive interfaces, navigation flows, Firebase backends, device integrations, and a Next.js web application. Developed the Stuf customer-facing app with Redux, Material UI, Tailwind CSS, Atomic Design, and standardized ESLint and Prettier configuration.

As the sole engineer for Taisho, architected a 21-screen React Native event-management application with Firebase modules, Redux slices, asynchronous thunks, and an atomic component library. Designed Firestore schemas and a transaction-safe ticketing system, added geospatial discovery and real-time listeners, and integrated GraphQL, Gremlin, Cosmos DB, APIs, and WebSockets across client projects.

Identified and fixed a critical bug in the Auto-GPT Python codebase and submitted a pull request. Learned the required Python concepts quickly while contributing from a primarily JavaScript engineering background.

Contributed under the Significant Gravitas open-source project.

Completed React Developer training.