👋 Hi there, I'm Jens

Techie heart, entrepreneurial spirit, and philosopher's mind. Learning junkie driven by curiosity and a love for building cool things.

Projects I have worked on

LanguageGuessr

GeoGuessr but for languages. 30k+ users in the first week after launching. Current week-over-week retention is 15-25% Added

personalized recommendation system
Gamification through achievements, points, and leaderboard
Cleaned up dataset to have 1,000 audio files for 100+ languages

AI Projects

MagicStory

Won the Samsung NEXT Hackathon in San Francisco. Interactive children's book that a text, voice, and image, and continues on the user's own imagination.

JournalGPT

An AI Journalling chatbot that helps you to ask about your day, and can give advice based on your previous experiences

ChatJoseph

An AI chatbot based on my favorite meditation teacher Joseph Goldstein. Built this in January 2023, just after the release of GPT-3.5

Career

THYNK

Co-founder & CEO

Learning Management System focused on building virtual communities by integrating gamification and real-time peer-to-peer sessions (or automated workshops). Developed entire app with CTO of the company, some features I built include gamification point system, live games using websockets, dashboard interface. Front-end: React Back-end NodeJS & Express DB: PostgreSQL

Website: https://thynkapp.com (deprecated)

PipeRider

An open-source data observability tool for dbt. Two lines of code to integrate with your existing dbt projects into your CI/CD processes.

Koelrugzak

Built a small e-commerce company in high school, selling cooling backpacks. Built website using Laravel and PHP.

Other projects

Digital Resume

Instead of making a PDF, I digitalized my resume. The data is stored with the use of 'labels' so in the end only to show relevant experience points. This feature is not yet implemented. Data is transformed in a way that would be logical for a back-end, yet for simplicity's sake this is done front-end right now.

Ao Nang Boatservice

I was on holiday in Krabi, Thailand. What's special about Krabi is all the neighboring islands that can only be reached by boat. In Krabi, you have one boat service: you have to go to the service desk, say where you want to go and wait until a minimum amount of people show up. After 2 days of long waiting (especially since I was traveling alone), I got fed up with the inefficiency and spent about a day locked up in my hotel room to build software for them; people could sign up for their preferred destination and time and find other popular times.

YouTube Wrapped

One of the more popular events in my social media feed is Spotify's Wrapped data at the end of the year. Thanks to the GDPR, organizations are required to give personal data. I created a simple analysis of my Youtube data using Python.