Data Scientist Intern

We run a marketplace with over 300,000 active sellers and fulfillment centers in four regions. We're looking for a Data Scientist Intern. We are building text classification and search features using LLMs and classic ML. The intern will help with experiments, evaluation and data labelling. You will intern remotely with our team in Cologne. We have hosted remote interns from several countries before. Working hours overlap with Central European Time. We use Slack, Notion and Google Meet. Cameras on for team calls.

You'll help with

• Write prompts and evaluation sets for LLM features, and score the outputs.
• Label and review samples of training data to check quality.
• Clean and prepare datasets in Python using pandas and NumPy.
• Document assumptions, data sources and results in Confluence or Notion.
• Engineer features from transaction, text or event data.

You should be

• Available 40 hours a week for the full internship.
• Based in the US for the duration of the internship.
• Basic statistics: distributions, hypothesis testing, sampling.
• A GitHub repo or Kaggle notebook showing at least one ML project end to end.
• Available at least 30 hours a week, with some flexibility during exam weeks.

10-12 weeks, starting June 2027. Stipend: $43.50 - $46.00/hr.

Perks: Learning and development stipend, Final presentation to leadership, Company laptop, Return offer opportunities, Paid company holidays.

Duration: 10-12 weeks. Start: June 2027.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Hofmann Commerce.