I am Pepijn van Wijk, currently doing a master's in Artificial Intelligence at the University of Amsterdam. Besides studying full time, I have a parttime job as a software engineer at a startup called Kexxu. At Kexxu, I have a number of tasks. Some notable ones from the last year have been working on the development of a AI-powered delta robot system, used for pick and place tasks in a factory. When not working on this project, I have been working on designing the architecture and implementation of a multi modal data lake for the Kexxu cloud editor.

When I am not working or studying, I like to work on personal coding project. some projects can be found in the section below, however most projects can be found on my Github. Besides programming, some of my interests include fitness, travel, history and geopolitics.

Currently, I am especially interested in learning about different DL frameworks, namely MLX, which is optimized for Apple's sillicon chips, and tinygrad, a minimal, cross-platform DL framework. To learn more about these frameworks, I read papers and implementations and try to translate them to the new framework. Some of these projects can be found below.

Publications


april 2025 @ ECIR - AI-Driven Retrieval and Analysis of Videotaped Council Meeting Archives using Automatic Speech Recognition, Speaker Identification, and Retrieval Augmented Generation

Highlighted projects


MediaBuzzWords.com

Daily scraping of media headlines & using TFIDF to plot media buzz word statistics.


GeoClassiffr

Building a simple convnet to predict the country an image was taken in.


MLX optimizer collection

MLX implementation of Amsgrad and ADOPT optimizer. Also an MLX optimizer test suite.


Llama facts

Llama3.1 finetuned on 300.000 twitter facts


Llama conspiracy

Llama3.1 finetuned on a couple thousand Reddit r/conspiracy posts


MLX DeepDream

Google's DeepDream algorithm ported to Apple's mlx framework


Subber

Transcribe, translate and embed videos from different languages easily using the Apple mlx framework


PDFgpt

Chat with any PDF file using vector search, document embeddings and large language models. This project was made a couple months before large scale releases of similar tools by e.g. OpenAI


Videotulen

A search engine built for thousands of hours of Dutch Municipality video meetings. This project was my bachelor's thesis project.


GymVis

First ever app made. A simple webapp showing what muscle groups get activated by a large variety of exercises