Alex Holachek
Senior Software Engineer at Datadog
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolAlex Holachek is a Senior Software Engineer based in New York with 12 years of experience and a five-year specialty in front-end engineering, shipping highly interactive React/Redux/TypeScript interfaces at companies like Datadog, Stash, and Codecademy. He focuses on web animations, data visualization, and accessibility, and has produced multiple open-source React libraries—most notably a lightweight magic-move transitions toolkit and gesture-driven mobile animation demos showcased at React Conf. Alex combines product-minded feature delivery (drag-and-drop builders, design system facelifts, and extensive E2E testing) with deep UI craftsmanship, optimizing motion and touch interactions for better user experiences. He brings a background in data-heavy visualization from the Harvard–Smithsonian ADS work and even practiced data munging and tooling in Python early in his career, which informs his pragmatic approach to front-end engineering.
13 years of coding experience
6 years of employment as a software developer
Bachelor of Arts, History, Bachelor of Arts, History at Wesleyan University
Github Skills (15)
css10
css-grid10
uid10
javascript10
mobile-web10
front-end-development10
ui-design10
animation10
react10
transition10
gesture-recognition9
styled-components9
typescript4
typescripts4
typescript-types4
Programming languages (9)
Github contributions (5)
aholachek/react-flip-toolkit
Jun 2018 - Sep 2022
A lightweight magic-move library for configurable layout transitions
Role in this project:
Front-end Developer
Front-end DeveloperContributions:37 releases, 810 commits, 78 PRs in 4 years 4 months
Contributions summary:Alex contributed to the react-flip-toolkit library, developing features related to animated transitions. They implemented new animations, optimized for a better user experience, and also introduced support for flexible customization options, like delaying animation with ease and applying spring animations. The commits demonstrate expertise in building interactive and animated front-end components using React.
layout-animationreactconfigurablemagiclayout
aholachek/animate-css-grid
Mar 2018 - Jan 2023
Painless transitions for CSS Grid
Role in this project:Front-end Developer
Front-end DeveloperContributions:7 releases, 126 commits, 33 PRs in 4 years 11 months
Contributions summary:Alex primarily focused on enhancing the animation and visual presentation of a CSS Grid library. Their commits centered around improving the staggering effect of grid item transitions, implementing transform origin changes for better visual effects, and fixing related issues. The contributions involve refactoring the core logic of the library and updating the demo to showcase and test the new features.
css-gridtransitionsanimations
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