Sarah Zhang

Software designer for early-stage startups. I've been the first product-design-minded engineering hire at pre-seed to Series A, shipping products from 0→1. Based in SF.

Howie

Contractor 2026–present

AI scheduling agent, now over SMS. Built proactive features like calendar alerts that have flagged 700+ scheduling issues users then delegated to the agent. Own the illustrated monthly recap end to end: art direction, prompt design, LLM evals, image generation, and delivery of ~400 personalized recaps each month.

Howie

Founding Designer 2023–2025

AI scheduling agent that handles meetings over email. As the first hire, I designed and built features end-to-end, including personalized onboarding, preferences, briefings, growth levers, and internal tooling to train and observe the models.

Lit Protocol

Design Engineer 2022–2023

Decentralized key management for the web. Sole designer on a team of 10. Built JavaScript SDKs and React starter apps that helped developers add simpler, safer wallet onboarding to their products, owned design and frontend for domain-linked wallets, and redesigned the marketing site and developer docs.

Racket

Frontend Developer 2021–2022

Short-form social audio app. Ran product, design, and QA as the sole frontend dev. Shipped a recording studio, audio DMs, and playlists. 20K users, 75K listens. Same team as Capiche, ~5 people.

Capiche

Frontend Developer 2020–2021

Community platform where SaaS buyers shared pricing and negotiated deals. As the first and only frontend/design hire, I built onboarding, notifications, search, and product wikis. 10–20% MoM growth in active users. Acquired by Vendr.