Daniel Schafer
Software Engineer at iMeta Technologies Limited
Portola Valley, California, United States
Summary
🤩
Rockstar🎓
Top SchoolDaniel Schafer is a software engineer and engineering leader with 13 years of experience best known as a co-creator of GraphQL and a primary contributor to the graphql-js reference implementation. He led large cross-functional teams at Meta, building the first cross-app design system and Bloks, a server-side rendering platform used across Facebook, Messenger, Instagram, and WhatsApp. His hands-on work spans backend schema design, mutations/subscriptions, and test automation, plus Android UI framework contributions to projects like Litho and RecyclerView integrations. Based in Portola Valley, he combines deep systems design experience with a track record of shipping infra that powers mobile news feeds and cross-product platforms, and he has shared that expertise at major industry conferences.
12 years of coding experience
13 years of employment as a software developer
Thomas Jefferson High School for Science and TechnologyBachelor of Science - BS, Mathematics and Computer Science, Bachelor of Science - BS, Mathematics and Computer Science at Carnegie Mellon University
Stackoverflow
426reputation
5kreached
4answers
0questions
graphql
top-5%
Github Skills (22)
javascript10
ui-components10
testing10
schema-design10
android-recyclerview10
wpgraphql10
java10
javas10
wordpress-graphql10
android10
litho10
graphql10
nodejs10
recyclerview10
mochajs8
Programming languages (11)
Github contributions (5)
graphql/graphql-relay-js
Aug 2015 - Dec 2015
A library to help construct a graphql-js server supporting react-relay.
Role in this project:
Back-end Developer & QA Engineer / Test Automation Engineer
Back-end Developer & QA Engineer / Test Automation EngineerContributions:6 releases, 33 commits, 19 PRs in 4 months
Contributions summary:Daniel primarily focused on updating the project to work with newer versions of the core GraphQL library and added more test coverage. Their work included modifications to existing test files, such as `src/mutation/__tests__/mutation.js`, `src/node/__tests__/node.js`, and `src/connection/__tests__/arrayconnection.js`, to ensure compatibility. The user also contributed to the test suite, specifically related to object identification and connections within the GraphQL Relay framework.
reactrelayclient-siderelay-modernreact-relay
graphql/graphql-js
Jul 2015 - Jul 2016
A reference implementation of GraphQL for JavaScript
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:5 releases, 34 commits, 24 PRs in 1 year
Contributions summary:Daniel primarily contributed to the project by implementing and modifying GraphQL schema and associated tests, specifically within the `graphql-js` repository. They added features like the ability to pass an episode to the hero query, fixed issues in the schema printing script, and ensured the correct detection of unreferenced types implementing interfaces. Additionally, the user focused on testing the schema's behavior through various test cases, including introspection and field validation scenarios, increasing the robustness of the GraphQL implementation.
javascriptgraphql-jsgraphqlreference-implementation
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.