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Unsolicited Application (all genders)

Bremen, Berlin
Full-time
Permanent employee

Your tasks

At ellamind, we train our own language models and build the tools to measure and systematically improve their capabilities. Our current focus areas are:

  • Training and post-training of LLMs, especially with reinforcement learning
  • Developing RL environments for agentic tasks
  • Building benchmarks and evaluations that show what a model can really do
  • Running clean experiments whose results you and the team can trust
  • Efficient, well-tested training and evaluation infrastructure

Want to join us on our mission, but none of our current openings fits you and your skills? Then we look forward to your unsolicited application. Please include your CV and a short cover letter that explains what you have worked on and what you want to achieve with us. Links to GitHub, publications or your own projects are very welcome.

Your profile

  • You hold a degree in computer science, mathematics, physics or a related field, and/or can demonstrate equivalent skills through projects or work experience.
  • You have hands-on experience training or evaluating language models.
  • You enjoy combining research and engineering: trying out ideas and then implementing them robustly.
  • You work independently and communicate results clearly, both in writing and in conversation.
  • You are proficient in German and English, written and spoken (min. B2).
  • You are happy to work from our Bremen office at least 2–3 days per week, with the prospect of moving to a remote setup in the long term.
  • You have an EU work permit.
  • The following experience is a plus but not required: reinforcement learning, distributed training, sandboxed code execution, open-source contributions.

Why us?

Our founders developed some of the most successful and most downloaded German open-source LLMs. For almost three years, our team has been contributing to the development of European AI models and working at the frontier of model evaluation.

With us, you work closely with an excellent research and development team and have a real impact on our technical direction, without long decision-making processes. On top of that, our Bremen office has a view of the water and comes with a boat, free drinks and smoothies.

About us

At ellamind, we develop language models and the methods that make them better. Our team trains its own models, builds RL environments, datasets and benchmarks, and researches how to reliably measure and systematically improve the capabilities of LLMs. We are known for our leading German-language open-source models. We actively share what we learn, including through the open-source community DiscoResearch and as part of the OpenEuroLLM program.

As a cash-flow-positive startup, we work with well-known partners such as Deutsche Telekom, the German Federal Government and leading healthcare providers. Our headquarters is in Bremen. We offer competitive pay, equity options and a short line to the founders.

Your CV isn't the only thing that counts. We are looking for curious people who want to help shape the next generation of European AI models. Diversity matters to us, because different perspectives make us better. Please apply even if you don't (yet) meet every requirement.