Justin Hileman
Staff Software Engineer at Datadog
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJustin Hileman is a Staff Software Engineer in San Francisco with 15 years building web applications, developer tooling, and UX at companies including Datadog and Dropbox. He blends a designer's attention to clean, standards-compliant front-end work with deep back-end and testing expertise—open-source contributions span mustache.php and nanoc to gulp-rev and cross-platform PHP libraries. As a former co-founder of Presentate, he favors developer-facing experiences, improving shell themes (bobthefish), git-flow completions, and build tooling while adding pragmatic support like rbenv/RVM and Kubernetes context. Known for shipping robust tests and automation (PHPUnit upgrades, manifest handling, Windows compatibility fixes), he consistently improves portability and maintainability across platforms. Practical, full-stack, and open-source-oriented, he pairs usability and accessibility instincts with production-grade engineering in both UI and infrastructure layers.
16 years of coding experience
19 years of employment as a software developer
Brigham Young University
Github Skills (73)
custom-theme10
node-js10
testing10
bash10
phpunit10
ruby10
e-mail10
customizer10
markdown10
thunderbird10
phpunit1010
javascript10
software-design10
gulp10
prompt10
Programming languages (21)
Github contributions (5)
bobthecow/Ruler
Jun 2011 - Jun 2022
A simple stateless production rules engine for modern PHP
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 90 commits, 10 PRs in 11 years 2 months
Contributions summary:Justin's primary contribution was focused on the functional testing of the ruler engine, ensuring the engine correctly implements logical propositions. They implemented functional tests for the engine, specifically focusing on de Morgan's laws, commutation, association, distribution, double negation, tautology, excluded middle, and non-contradiction. Additionally, the user made coding standard changes to improve code quality and readability.
statelessphp-5rulephprules
bobthecow/mustache.php
Mar 2010 - Aug 2022
A Mustache implementation in PHP.
Role in this project:Back-end Developer
Back-end DeveloperContributions:10 releases, 2 reviews, 721 commits in 12 years 7 months
Contributions summary:Justin primarily focused on improving and updating the core functionality of a Mustache implementation in PHP. Their contributions included fixing bugs related to partials within instantiated Mustache objects, adding documentation for partials, and updating the rendering logic to handle context more effectively, particularly for iterable blocks. They also made a series of improvements to enhance the robustness of template processing.
phpmustache
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