Chengyin Liu

Seasoned software builder, team leader, and company founder.


Co-founder/CTO @ Slab, Jun 2017 — Dec 2023
  • Co-founded company with investment from Matrix Partners, CRV, and NEA.
  • Achieved profitability with multi-million dollar ARR, serving notable clients such as Asana, Ramp, Fivetran with full company adoption.
  • Led the engineering, support engineering, support, and recruiting teams with a remote-first approach and a strong culture.
  • Directed technical strategy jointly with co-founder in a React, GraphQL, Elixir, Postgres, GCP stack.
Senior Software Engineer @ Airbnb, Apr 2016 — Jun 2017
Lead Software Engineer @ Place / Backplane, Feb 2012 — Apr 2016
  • Led frontend development for a social media platform, serving high-profile clients such as Lady Gaga, Coca-Cola, Guns N’ Roses, and MLBPA.
  • Migrated whole site from Backbone.js to React as an early adopter.

Early Career

Software Engineer Intern @ WePay, Jul 2011 — Sep 2011
Designed and implemented a store that is embeddable in any page, which made to the TechCrunch and drew 300 new sellers for WePay on the launch day alone.
Software Engineer Intern @ Wandoujia, May 2010 — July 2010
Built a dashboard using HTML, CSS and JavaScript as the front-end developer for Wandoujia, the missing managing software for Android phones.

Personal Projects

The easiest way to inspect fonts on webpages. Serving 3-million weekly users.


WhatFont App
Same WhatFont experience, now available on the iPhone, iPad, and iPod Touch.
Bamboo App and Extension
Save and share web highlights through Bamboo's iOS App, Chrome extension and Safari extension.
Create a color pallete from an image in JavaScript. Inspired by iTunes 11's album view.
Earth Pulse
Track earthquakes with social media.
UIUC CS 473 Grader Helper
A Python script to help CS 473 UIUC grader smoothen the grading process by auto handling homework files.
UIUC Course Open API
Provide an open API for UIUC hackers as an infrastructure to build UIUC hacks.
Innovation Works Website
Built the official website for the most important Chinese tech incubator.