Wybren Kortstra
Co-Founder at Groene Otter
Hengelo, Overijssel, Netherlands
Summary
👤
Senior🎓
Top SchoolWybren Kortstra is a software entrepreneur and Co-Founder with 11 years of experience building web-first SaaS platforms, currently developing a CSRD compliance product that combines user-friendly interfaces with AI to help organizations meet sustainability reporting requirements. With a Master’s in Computer Science from the University of Twente and a background founding web shops and startups, he blends hands-on full-stack development with product and business strategy. He contributes to open-source backend tooling—notably improving core features in the popular TypeScript ORM MikroORM—demonstrating deep expertise in ORMs, database interactions and TypeScript. Based in Hengelo, Netherlands, he pairs a practical belief that “any application can be built on the web” with a focus on making compliance both usable and impactful.
12 years of coding experience
3 years of employment as a software developer
Master’s Degree, Computer Science, Master’s Degree, Computer Science at University of TwenteAtheneum, Atheneum at OSG Sevenwolden
English, frisian, Dutch
Stackoverflow
123reputation
7kreached
5answers
3questions
Github Skills (23)
typescript10
orm10
typescript-types10
nodejs10
typescripts10
testing9
configuration-management9
databases9
configuration-file9
configurations9
database9
unit-testing8
entity7
database-design7
angular-material6
Programming languages (11)
Github contributions (5)
mikro-orm/mikro-orm
Aug 2020 - Nov 2022
TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Supports MongoDB, MySQL, MariaDB, MS SQL Server, PostgreSQL and SQLite/libSQL databases.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:23 reviews, 22 commits, 43 PRs in 2 years 3 months
Contributions summary:Wybren primarily contributed to the MikroORM project by implementing and fixing core features related to the entity manager, configuration, and seeder functionalities. They improved the event subscriber handling and ensured global filters are enabled by default. The user also added a seeder package, refactored the seed manager, and improved the creation of seeder classes. The commits involved changes to TypeScript code, configuration files, and testing infrastructure, indicating strong skills in ORM and database interactions.
data-mapperdatabasedatabasesidentity-maplibsql
RiskChallenger/mikro-orm
Aug 2020 - Dec 2022
TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Supports MongoDB, MySQL, MariaDB, PostgreSQL and SQLite databases.
Contributions:88 pushes, 41 branches in 2 years 4 months
sqlite-databasesmysql-mongodbunit-of-workunitpatterns
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