Rosanna Yau

Founder

Founder at BackerKit

San Francisco, California

Writes $200K – $300K checks · typically $250K

Latest on 𝕏

Rosanna Yau 🤘 (she/her) @oannasoro

Proud to be the 2,803rd backer 😎 on @BackerKit Crowdfunding for Nail House! https://t.co/DRKSfU0WxT

Nov 5, 2025

Rosanna Yau 🤘 (she/her) @oannasoro

Proud to be the 85th backer 😎 on @BackerKit Crowdfunding for The Slow System Pitcher! https://t.co/Yr2xt67y9e

Oct 17, 2023

Rosanna Yau 🤘 (she/her) @oannasoro

Really excited to open our @BackerKit crowdfunding platform to all creators today 🎉 Learn more about what sets us apart: https://t.co/x9AvTPjsEn

Jul 18, 2023 · ♥ 1

Founder at BackerKit YC S12

Rosanna went through Y Combinator (Summer 2012) — any YC alum in your network can reach them through the YC community.

→

In turn, Rosanna can intro founders to BackerKit's investors below.