Chad Hietala
Sr. Staff Engineer - Client Quality Domain Owner at LinkedIn
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolChad Hietala is a Sr. Staff Engineer with nearly two decades of experience designing large-scale web platforms and developer tools, currently owning client quality at LinkedIn where he helps 9,000+ engineers safely ship AI-assisted code to over 1.2B members. He helped found LinkedIn Sales Navigator and led company-wide initiatives like the TypeScript migration and a web framework redesign that halved feed load times, blending deep systems thinking with pragmatic execution. A founding contributor to LinkedIn’s agent and GenAI efforts, Chad holds patents on agentic approaches and built autonomous AI testing systems that stopped 200+ revenue-impacting bugs from reaching production. Long active in open source, he’s contributed to prominent projects such as Ember.js and ember-cli, improving build tooling, router architecture, and TypeScript support—work that influenced broader JavaScript reactivity thinking. Based in New York, he pairs product-first engineering with a knack for enabling non-technical teams to participate in quality assurance through natural-language testing.
14 years of coding experience
11 years of employment as a software developer
Pinckney Community High SchoolBA Finance, BA Finance at Eastern Michigan University
Italian, English
Stackoverflow
18,296reputation
888kreached
21answers
42questions
Github Skills (24)
javascript10
npm10
testing10
component-development10
ember-cli10
typescript10
glimmerjs10
ui-design10
gjs10
refactor10
uid10
emberjs10
front-end-development10
typescript-types10
refactoring10
Programming languages (12)
Github contributions (5)
tildeio/router.js
Apr 2014 - Jun 2019
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:103 commits, 62 PRs, 109 pushes in 5 years 3 months
Contributions summary:Chad primarily worked on improving the functionality and structure of the `router.js` library. Their contributions included fixing dependencies for browser builds, improving code shaping, and adding comprehensive TypeScript support. They also focused on refactoring and abstracting the router base class, and adding tests. These commits demonstrate a focus on improving both the codebase and the overall developer experience.
glimmerjs/glimmer-vm
Nov 2015 - Aug 2021
Role in this project:Front-end Developer & UI Designer
Front-end Developer & UI DesignerContributions:2 releases, 5 reviews, 495 commits in 5 years 9 months
Contributions summary:Chad primarily contributed to the Glimmer.js framework by modifying and enhancing its component compilation and rendering capabilities. Their commits demonstrate improvements to the framework's handling of attributes, including those in the HTML template, and support for features like in-element rendering and block helpers. They are also responsible for adding a visualizer link, cleanup of some type information and other updates.
glimmerjsemberjstypescript
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