David Baumgold
Professional Freelancer at LeafTech
Amsterdam, North Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolDavid Baumgold is a seasoned full-stack web developer and technical trainer with 14 years of experience building and migrating production systems in Python and JavaScript. As a freelance tech lead and staff engineer, he has led migrations from Python 2 to 3, moved CI to GitHub Actions, and shipped calendar-driven features that contributed millions in ARR. He mentors teams, delivers in-person training across Europe, and enjoys explaining complex topics clearly on stage. An active open-source contributor, his work spans popular projects like PostGraphile/Graphile Starter, Flask-Admin, moto and Open edX, with contributions ranging from security hardening to test automation and geospatial support. Based in Amsterdam and frequently traveling, he combines hands-on engineering with developer advocacy and documentation experience. He’s as comfortable refactoring backend auth flows as polishing React/TypeScript front ends, and he values community impact over mere code.
14 years of coding experience
8 years of employment as a software developer
BA, Computer Science, Psychology, BA, Computer Science, Psychology at Brandeis University
Stackoverflow
5,426reputation
1.9mreached
32answers
8questions
logical-operators
top-1%
flask
top-5%
python
top-5%
Github Skills (109)
ec10
flask-admin10
cms10
authorizations10
postgresql10
restructuredtext10
github10
python10
ui-components10
testing10
authentication10
logical-operators10
backbonejs10
aws-s310
ansible-galaxy10
Programming languages (29)
Github contributions (5)
requests/requests-oauthlib
Sep 2014 - Nov 2019
OAuthlib support for Python-Requests!
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 1 review, 55 commits in 5 years 2 months
Contributions summary:David primarily contributed to the `requests-oauthlib` library by adding and modifying core functionality. Their work included integrating with CI/CD tools (Travis CI and Coveralls), implementing exception subclasses for OAuth1, and adding properties to the sessions for authorization. The user also added features like allowing `base_url` parameters for sessions and providing tests to verify the authorization boolean property.
python-requestspythonoauth2-clientoauth-client
singingwolfboy/flask-dance
Sep 2014 - Jan 2023
Doing the OAuth dance with style using Flask, requests, and oauthlib.
Role in this project:Back-end Developer
Back-end DeveloperContributions:34 releases, 33 reviews, 495 commits in 8 years 6 months
Contributions summary:David implemented the OAuth1ConsumerBlueprint and OAuth2ConsumerBlueprint classes, introducing support for OAuth 1 and OAuth 2 authentication flows using Flask, requests, and oauthlib. They refactored existing code into a base class to share common blueprint functionality, enhancing code reusability. Moreover, the user ensured tokens were loaded when users were authenticated and refactored the session handling for OAuth2 implementations. This effort expanded the project's authentication capabilities and improved the overall structure.
flaskoauth
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