Fer Díaz
Design Engineer in San Francisco. I build user experiences from design to code.
Sub-agent animation inside the chat interface.
Sub-agents keep the main chat open while heavier work runs in parallel.
Native swipe interaction for chat image attachments.
Floating AI toolbar for editing React interfaces directly in the browser.
Interaction design detail for the contextual AI toolbar.
AI-assisted visual IDE for frontend development.
Microinteraction detail for toolbar hover states.
AI launcher expanding into a command palette.
Based demo: editing a React app with AI.
Demo of a Slack-based designer agent that codes.
Text-to-frontend alpha launch video.
Product design iterations for a streamer dashboard and creator tools.
Twitch extension onboarding from install to activation.
Twitch extension demo for live viewer interactions on stream.
Streamer profile onboarding from bio to shareable link.
Viewer web app for animated avatars on stream.
Mobile app explore screen for streamer content and reactions.
Creator profile screens for a Twitch companion app.
In-app purchase flow embedded in the send action.
Viewer profile and wallet screens for the mobile app.
Mobile app screens for explore, uploads, and reaction composing.
Reaction composer for sending memes, GIFs, and TTS on stream.