Jack Chu

Jack Chu CTO / VP
of Engineering

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I lead engineering teams
at startups,
and I still architect
and code, these days more with AI agents.

  1. 01 fête · CTO
  2. 02 Legacy · VP of Technology
  3. 03 Modern Age · CTO
  4. 04 Away · VP of Engineering
  5. 05 Bonobos · Director of Engineering
  6. B1 Retriable
  7. B2 Code Review Bench

About

Jack Chu, smiling, outdoors in front of autumn trees

My passion is building amazing teams that build just as amazing digital products. My background in software engineering started in web based backend APIs and then later expanded to web frontend expertise and systems architecture.

Later, I found that building teams and leadership was even more fun and challenging, but also let me scale up my ability to impact the product and the business.

Outside of work, I play electric guitar through a mix of new and old effects pedals, plus modeling and capture gear. I also build and mod mechanical keyboards, cook, and listen to a lot of Japanese rock and pop.

Now

Updated November 2026

  1. Between roles and looking for my next one.
  2. Experimenting with agentic AI, including a self-hosted Rakazo setup (a private, local Grokbot) to try AI as more of a personal assistant.
  3. Writing my own agent skills, and trying skills from Matt Pocock and poteto for a better agentic workflow.
  4. Working on Code Review Bench, looking for better ways to do agentic code review.

Experience

Startup engineering leader. I build engineering organizations, with product and design alongside, and ship the product while doing it. CTO or VP at four companies over the last eight years. I still architect and code, these days more with AI agents. Mostly e-commerce and omnichannel retail, more recently health and wellness.

Full history on LinkedIn

  1. fête

    CTO

    Nov 2025 - May 2026

    Early-stage AI gifting startup, built AI-first with a team of 6.

  2. Legacy

    VP of Technology

    Jan 2024 - June 2025

    At-home fertility, sperm testing and freezing.

  3. Modern Age

    CTO

    Sep 2021 - Dec 2022

    Longevity and aging wellness clinics in NYC; built the tech org from zero to 21.

  4. Away

    VP of Engineering

    Oct 2018 - Mar 2021

    DTC luggage brand; grew engineering from 3 consultants to 30+.

  5. Bonobos

    Director of Engineering

    Jan 2015 - Oct 2018

    Men's apparel brand, acquired by Walmart in 2017.

Education

Baruch CollegeComputer Information Systems (CIS) BBA2004-2007

Projects

Retriable

Open source · Ruby gem

A simple DSL to retry failed code blocks with randomized exponential backoff, over 419 million downloads on RubyGems.

Downloads
419M+
GitHub stars
900+

Code Review Bench

Open source · Benchmark

An open benchmark comparing LLM code review setups on real open-source pull requests, measuring findings, cost and false alarms.

Set in Six Caps, Barlow Condensed and Barlow