← Frontend Case Studies
Slack
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Engineering blog
• 24 case
studies
Build better software to build software better
November 2025
Optimizing Our E2E Pipeline
April 2025
Automated Accessibility Testing at Slack
January 2025
Balancing Old Tricks with New Feats: AI-Powered Conversion From Enzyme to React Testing Library at Slack
October 2024
Building Custom Animations in the Workflow Builder
December 2023
Building Background Effects for Clips
June 2022
Managing Focus Transitions in Slack
July 2021
Creating a React Analytics Logging Library: Part 2
December 2020
Creating a React Analytics Logging Library: Part 1
November 2020
The Unsuspecting Beauty & Complexity of Web Forms
September 2020
How Slack changed the way it designs accessible frontend components
May 2020
A Day in the Life of a Frontend Product Engineer at Slack
February 2020
Gantry: Slack’s Fast-booting Frontend Framework
October 2019
Building Dark Mode on Desktop
September 2019
The Gradual Design System: How We Built Slack Kit
September 2019
Service Workers at Slack: Our Quest for Faster Boot Times and Offline Support
August 2019
When a rewrite isn’t: rebuilding Slack on the desktop
July 2019
Keep webpack Fast: A Field Guide for Better Build Performance
January 2018
Rebuilding slack.com
October 2017
Localizing Slack
September 2017
Rebuilding Slack’s Emoji Picker in React
May 2017
TypeScript at Slack
April 2017
Reducing Slack's memory footprint
March 2017
Getting to Slack faster with incremental boot
July 2016