Senior Data Scientist (Agentic AI)

Requirements

• Machine learning fundamentals (supervised, unsupervised, reinforcement learning)
• Data wrangling and preprocessing (Pandas, NumPy, etc.)
• LLMs and NLP expertise (Transformers, BERT, GPT, etc.)
• Prompt engineering & fine-tuning
• Knowledge of tokenization, embeddings, and attention mechanism
• Using and fine-tuning Hugging Face models
• Evaluation metrics for generative models (BLEU, ROUGE, faithfulness, hallucination detection)

Nice to Haves

• Open-source model experience (LLaMA3, Mistral, Mixtral) or custom inference stacks
• Judge models, feedback loops, or synthetic user testing architectures
• Familiarity with prompt injection defenses, output validation, or agent safety
• Experience deploying generative AI in web or mobile products
• Academic or industry background in statistics, cognitive science, or human-AI interaction

What You'll Be Doing

• Architect and deploy agent-based systems using LangChain, CrewAI, AutoGen, or custom frameworks
• Build and optimize RAG pipelines — from smart chunking to embeddings and vector search
• Fine-tune and evaluate LLMs for reliability, relevance, and factuality
• Design evolving prompt and memory systems driven by LLMs and user feedback
• Implement simulation and feedback loops using judge models or agent testing harnesses
• Partner cross-functionally with product, research, and engineering teams
• Stay current with the latest research in LLMs, generative modeling, and agent systems

Perks and Benefits

• Make the most of our hybrid working model and join the team for face-to-face connection and collaboration in our beautiful Berlin campus 2 days a week
• We offer 27 days holiday with an extra day on 2nd and 3rd year of service
• We will support you in developing yourself and your career growth opportunities: 1.000 € Educational Budget, Language Courses, Parental Support and access to the Udemy Business platform to explore a variety of online courses.
• Get moving and release those wonderful, mind-boosting endorphins: Health Checkups, Meditation, Yoga, Gym & Bicycle Subsidy
• Cash. Dough. Cheddar. Whatever you call it, we’ll help you with it: Employee Share Purchase Plan, Sabbatical Bank, Public Transportation Ticket Discount, Life & Accident Insurance, Corporate Pension Plan
• The power of getting together over some food is unrivaled. Here are a few ways to help you do that. All the yum: Digital Meal Vouchers, Food Vouchers, Corporate Discounts. Courses.