Jan Scheurer
Founder CEO at Xe-Development UG
Berlin, Germany
Summary
👤
Senior🎓
Top SchoolJan Scheurer is a founder-CEO and software architect with 12+ years building high-performance real-time web and 3D applications from Berlin, focusing on maintainable, extendable and visually polished systems. He drives end-to-end architecture and hands-on implementation, having led product and engineering teams as Interim CTO for a WebGL-based PAAS while running his own real-time 3D consultancy. An active open-source contributor, he has improved core database behavior in the popular Sequelize ORM, demonstrating deep backend and database expertise alongside real-time frontend work. His background spans cyber security, data scraping and medical imaging, and he communicates effectively across disciplines including 2D/3D artists and music producers. Outside commercial work (often NDA-bound) he publishes technical answers, competes in demoscene realtime audiovisual coding contests, and favors deep focus over multitasking. That blend of creative coding, math-driven engine work and pragmatic architecture makes him a rare practitioner who reinvents parts of the stack to truly understand and optimize them.
12 years of coding experience
1 year of employment as a software developer
Self TaughtSoftware Developer, Computer Software Engineering, Software Developer, Computer Software Engineering at G18
English, German, French
Github Skills (15)
sequel10
databases10
javascript10
database-administration10
orm10
postgresql10
admin10
sql10
sequelizejs10
database10
typescript-types9
typescript9
typescripts9
nodejs9
unit-testing9
Programming languages (10)
Github contributions (5)
sequelize/sequelize
Sep 2013 - Feb 2014
Feature-rich ORM for modern Node.js and TypeScript, it supports PostgreSQL (with JSON and JSONB support), MySQL, MariaDB, SQLite, MS SQL Server, Snowflake, Oracle DB (v6), DB2 and DB2 for IBM i.
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:5 commits, 1 PR, 3 comments in 5 months
Contributions summary:Jan contributed to the core functionality of the Sequelize ORM, focusing on enhancing its database interaction capabilities. Their work included adding support for handling typed arrays within the `SqlString` module, ensuring proper data conversion for PostgreSQL. They also implemented and updated unit tests to validate the correct behavior of typed arrays in database queries, specifically in a PostgreSQL context. Further commits involved minor code style improvements in the `SqlString` module and addressing an issue related to enum indexing during database synchronization.
feature-richormsql-servermicrosoft-sql-serversequelize
LJ1102/avconv
Apr 2015 - Apr 2015
Contributions:10 pushes, 4 branches in 4 days
parametersdata-conversionmetastreamsmeta-data
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