Data Science Intern

Machinebouw Waal is a global biopharmaceutical company with medicines approved in more than 60 countries. Founded in 1966, we now have 450 employees. Gowning for cleanroom work takes about 15 minutes each time.

OVERVIEW

We are building text classification and search features using LLMs and classic ML. The intern will help with experiments, evaluation and data labelling. Fully remote. You can work from anywhere in the Netherlands. Strong written English is important, since much of our work is async.

RESPONSIBILITIES

• Fine-tune small transformer models with Hugging Face for classification tasks.
• Engineer features from transaction, text or event data.
• Write prompts and evaluation sets for LLM features, and score the outputs.
• Evaluate models using precision, recall, AUC and other metrics that fit the problem.
• Pull data from BigQuery or PostgreSQL with SQL queries.
• Train baseline models with scikit-learn and compare them against simple rules.
• Package a trained model behind a simple FastAPI endpoint for testing.

WHAT WE'RE LOOKING FOR

• Based in the Netherlands for the duration of the internship.
• Eligible to work in the Netherlands.
• Currently enrolled in a bachelor's or master's degree, graduating 2028.
• A GitHub repo or Kaggle notebook showing at least one ML project end to end.
• Working knowledge of SQL.
• Basic statistics: distributions, hypothesis testing, sampling.
• Coursework or projects in machine learning, such as regression, classification and clustering.
• Clear written English, since most discussions happen in docs and Slack threads.
• Pursuing a degree in Computer Science, Statistics, Mathematics, Data Science or a related field, graduating in 2028.

WHAT YOU'LL LEARN

• Working with messy production data and real business constraints.
• Experiment tracking and reproducible notebooks, the way the team actually does it.
• How to judge whether a model is worth deploying, not just whether its accuracy is high.
• You will take one model from raw data to an evaluated prototype.

Duration: 4 months

Start date: Mar 2027

Stipend: €2,000 to €2,250/month

PERKS

• Online learning budget.
• Letter of recommendation.
• Mentorship.
• Possibility of a full-time offer.

Duration: 4 months. Start: Mar 2027.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Machinebouw Waal B.V..