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Anton Castro

Product Engineer & Designer

Designing products for high-stakes work, where the real challenge is building trust. Four 0→1s across healthcare, fintech, and govtech.

Work

Led the company's first AI product, from a chatbot to an analyst agent. First enterprise customers: Walmart and DoorDash.

The State Affairs AI agent answering a question about a bill
AI Chat expanded: policy intelligence on demand, with cited answers over legislative data
AI Chat generating a 360° View: briefing, active-states map, momentum and forecast in one surface
What's Changed panel: the most important items since your last visit, ranked by priority
Custoria Vault

Co-founded and built an AI vault for valuables, designed end to end and shipped to the App Store in Swift.

The Custoria iOS app: an item detail for a vintage ring, vault analytics by category, and the AI analyzing three photos
The Custoria Labs web vault on a MacBook in a jewelry studio: a private catalog of rings, earrings, and loose stones
Augmedix

Scaled AI clinical documentation from one product to four, through a $139M acquisition.

Augmedix Assist: a phone showing an AI-drafted clinical note
Two HCA emergency medicine clinicians reviewing an AI-drafted note on Augmedix Go ED
Augmedix platform diagram: visit, documentation, and EHR stages
Rocket

Founding designer on Liv, Rocket's conversational AI for homeowners. Cut client onboarding time by 75%.

Rocket Mortgage homepage with the Liv chat assistant open
Rocket onboarding as a familiar web form and as a conversation with Liv, sharing the same goals
A loan-type selection on mobile flowing into a personalized Rocket dashboard
Before and after of the banker console with routing accuracy results

Experience

  • Custoria Labs · Founding Design Engineer2025 –
  • State Affairs · Sr. Interaction Designer2026 –
  • Augmedix · Product Designer, AI & Growth2023 – 24
  • Rocket · Conversational AI Designer2022 – 23
  • Anti-Defamation League · Product Designer2021 – 22
  • Intuit & Electronic Arts · Design Internships2019 – 20

What's more?

Agent Pit Stop

An open-source design system for the moments an agent hands control back to a person.

Agent Pit Stop: an agent run as a lap around a track, pulling into a human-in-the-loop pit to approve, deny or steer
Terrarium

Build closed terrariums and watch them live: water cycle, plants, mold and springtails, in 3D.

A 3D greenhouse terrarium on a desk: fittonia, fern, moss and driftwood over soil and gravel, its glass beaded with condensation