Jay Martinez

I build software for the web and desktop, with a growing interest in systems and developer tools.

Most of my projects start with something that annoys me enough to fix it.

New York · 19

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Projects

  1. RelayBrowser tab syncing across devices, built for fast propagation and private device identity.TypeScript · WebExtensions · Realtime syncBrowser extension2026
  2. FetchA YouTube utility for working with video, audio, transcripts, thumbnails, and metadata.Next.js · TypeScript · Media processingDeveloper utility2026
  3. InsyghtA desktop-focused Valorant tracker for match history, player profiles, and useful analytics.Desktop UI · TypeScript · Data visualizationDesktop software2026

Now

  1. Building developer tools to fix small annoyances.

  2. Experimenting with desktop apps and native-feeling interfaces.

  3. Learning Rust by working on open-source projects.

Technologies

Languages

TypeScript · JavaScript · Python · Java · Rust (learning)

Frameworks

React · Next.js · Node.js · FastAPI · Tailwind CSS

Tools

Git · WebExtensions · REST APIs · Docker · Linux · Vercel

Recent writing

Notes from the workbench will collect here soon.

Writing archive