Marc Schmidt
Freelance Software Engineer at Marc J. Schmidt
Hamburg, Germany
Summary
🤩
RockstarMarc Schmidt is a freelance software engineer and founder with 11+ years building enterprise-grade deep learning tooling and high-performance web infrastructure from Hamburg. He blends hands-on backend expertise—especially in PHP, TypeScript, SQL adapters and ORM internals—with front-end contributions like container queries, reflecting a full-stack aptitude. As founder of Deepkit and predecessor AETROS he turned an MVP with thousands of users into a production-focused framework for ML engineering and experiment tooling. His open-source footprint includes meaningful contributions to well-known projects (php-pm, Propel2) where he improved process management, migration tooling and database integrations. Colleagues know him for pragmatic refactors, adding production features such as hot-code reload and robust migration options, and for thoughtfully bridging developer ergonomics with scalable system design.
11 years of coding experience
15 years of employment as a software developer
English, German
Stackoverflow
8,381reputation
1.6mreached
71answers
3questions
css
top-5%
html
top-1%
javascript
top-1%
media-queries
top-5%
jquery
top-1%
angular
top-5%
Github Skills (55)
database-migrations10
parserator10
appbundle10
javascript10
application-server10
sqlite10
parser10
sql-parser10
postgresql10
database-connection10
jquery10
object-mapping10
css10
databases10
typescript10
Programming languages (11)
Github contributions (5)
marcj/deepkit
Nov 2018 - Jan 2023
modular high-performance TypeScript framework
Role in this project:
Back-end Developer
Back-end DeveloperContributions:26 releases, 29 reviews, 2228 commits in 4 years 2 months
Contributions summary:Marc contributed to the back-end functionality of the Deepkit framework. Their commits involved refactoring SQL database connections, implementing features in PostgreSQL and SQLite adapters, and creating various test cases. The user also worked on improving serialization, and made a series of fixes to enhance the framework's handling of types, including changes related to the use of different data structures and the support for new features.
typescriptmongodbnodejsframeworkframework-javascript
marcj/css-element-queries
Jan 2015 - Jan 2020
CSS Element-Queries aka Container Queries. High-speed element dimension/media queries in valid css.
Role in this project:Front-end Developer
Front-end DeveloperContributions:17 releases, 86 commits, 77 PRs in 5 years
Contributions summary:Marc primarily contributed to the implementation and improvement of element queries functionality, a core feature of the repository. They added methods for detaching and updating elements, enhancing the core functionality of the element queries. Further commits demonstrate a focus on improving responsive image functionality and fixing related bugs. Additional commits involve improving the demo and performance of the resize sensor used by the library.
container-queriescssmedia-queriesmedia-queryelement-query
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