Daniel Greenfeld
President COO at Feldroy
Philippines
Summary
🤩
RockstarDaniel Greenfeld is a seasoned software leader and open-source maintainer with 17+ years of experience building production-ready web applications and developer tooling. As President/COO of Feldroy and creator/co-author of the Two Scoops of Django series, he blends hands-on engineering (Cookiecutter Django, Django Crispy Forms) with executive product and operational leadership. His career spans NASA to energy and fintech firms, demonstrating an ability to lead teams through complex integrations, payments, and platform work while keeping a craftsman’s attention to clean architecture and minimalism. A prolific contributor to high-profile projects like cookiecutter and oauthlib, he pairs backend expertise in Python/Django with interests in JavaScript, React, and Rust. Based in the Philippines and known online as “pydanny,” he’s equally committed to developer experience—shipping templates, form libraries, and test suites that save other teams months of work. Outside of code, he’s a proud father and collaborator with a track record of turning best practices into widely adopted open-source defaults.
17 years of coding experience
18 years of employment as a software developer
Stackoverflow
8,154reputation
414kreached
20answers
9questions
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top-5%
Github Skills (61)
unit-testing10
authorizations10
javascript10
billing10
restructuredtext10
subscribe10
bootstrap10
python10
back-end-development10
sphinx10
django10
testing10
css10
configuration-management10
authentication10
Programming languages (16)
Github contributions (5)
jazzband/django-admin2
May 2013 - Jun 2016
Extendable, adaptable rewrite of django.contrib.admin
Role in this project:
Back-end Developer
Back-end DeveloperContributions:413 commits, 1 PR, 4 pushes in 3 years 1 month
Contributions summary:Daniel's contributions primarily involve the development of a Django administration interface, as evidenced by the changes to URL configurations, template modifications, and the implementation of views for managing models. The user implemented both class and function based actions within the admin interface and enhanced the interface through the addition of customizable features, such as verbose field names, and page titles. They added tests to the project to ensure quality, and integrated the default theme with other aspects of the project such as the addition of internationalization.
contribpythonadmindjangoextendable
twoscoops/django-twoscoops-project
Jan 2013 - Jul 2015
The sample project layout from the book, "Two Scoops of Django 1.5 and 1.6"
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:105 commits, 3 PRs, 4 pushes in 2 years 6 months
Contributions summary:Daniel contributed to both front-end and back-end aspects of the project. They updated the README file, added test settings, modified project settings, updated base templates, and added a logo. They also integrated Bootstrap CSS and JavaScript files. The user's changes span documentation, configuration, and front-end libraries, indicating a broad skillset.
pythondjangolayoutproject-layoutdjango-project
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