Casey Holzer
Staff Software Engineer at LeanTaaS
Billings, Montana, United States
Summary
🤩
Rockstar🎓
Top SchoolCasey Holzer is a Staff Software Engineer with 13 years of experience building robust front-end systems and improving developer-facing libraries. Based in Billings, Montana, Casey recently advanced to a staff role at LeanTaaS after helping ship features and improve reliability at Hospital IQ. He has a strong track record contributing to popular open-source projects—enhancing FullCalendar’s API and tests, adding flexible container support to intl-tel-input, and extending Summernote’s icon capabilities—demonstrating attention to API design and integration. Casey blends careful, test-driven engineering with a focus on clean, maintainable UI code and pragmatic design patterns. A collaborative mentor and lifelong learner, he balances hands-on coding with teaching teammates and exploring new front-end techniques. Outside work he’s an avid reader and gamer who can often be found walking his dog or watching football.
13 years of coding experience
12 years of employment as a software developer
Bachelor of Science - BS Pre-Medicine/Pre-Medical Studies, Bachelor of Science - BS Pre-Medicine/Pre-Medical Studies at Montana State University Billings
Stackoverflow
3,478reputation
409kreached
21answers
4questions
react-router
top-5%
twitter-bootstrap
top-5%
react-router-dom
top-5%
javascript
top-5%
Github Skills (37)
fullcalendar10
javascript10
text-editor10
testing10
css10
html-editor10
ckeditor10
editor10
summernote10
wysiwyg10
front-end-development10
tel9
telephony9
twitter-bootstrap9
event-handling9
Programming languages (14)
Github contributions (5)
jackocnr/intl-tel-input
Jun 2015 - Oct 2015
A JavaScript plugin for entering and validating international telephone numbers. React and Vue components also included.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:48 commits, 2 PRs, 49 comments in 3 months
Contributions summary:Casey's commits focused on enhancing the `intl-tel-input` plugin by adding and modifying the container option. They implemented support for a custom container, allowing the flag dropdown menu to be appended to a specific element. This involved changes to the JavaScript and CSS files, including modifications to the plugin's core functionality and styling to accommodate the container option, indicating a focus on improving the plugin's flexibility and integration capabilities.
phone-numbervalidationlibphonenumberjavascripttelephone
fullcalendar/fullcalendar
Apr 2016 - Nov 2017
Full-sized drag & drop event calendar in JavaScript
Role in this project:Front-end Developer
Front-end DeveloperContributions:48 commits, 13 PRs, 85 comments in 1 year 7 months
Contributions summary:Casey primarily focused on enhancing the FullCalendar library's functionality and test coverage. Their commits involved removing unused code, adding new methods for event sources, and creating tests to ensure features like refetching events and event sources work as expected. The user also made improvements by adding the getEventSource method and implementing new tests. Overall, the contributions centered on improving the API and reliability of the calendar component.
fullcalendarcalendareventjavascriptdrag-and-drop
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