Senior AI Scientist (Agentic AI)

Your role in the team

• We are on a lookout for a hands-on Senior AI Scientist (Agentic AI) to join the Vendor Data Team on our journey to always deliver amazing experiences to go beyond prompt engineering into autonomous orchestration: designing agents that generate their own prompts, tools that empower AI with real-world actions, and judge models that validate outputs.
• Your work won't sit in research notebooks - it'll ship.
• The Agentic AI team is building the next generation of AI-native products - intelligent systems that reason, act, and adapt.
• We combine the power of large language models (LLMs), autonomous agents, and retrieval-augmented generation (RAG) to move beyond static prompts and chatbots into dynamic AI systems that solve real problems at scale.
• We don't treat LLMs as tools to micromanage - we treat them as collaborators.
• Our products are designed to build and evolve themselves, leveraging AI to orchestrate workflows, make decisions, and continuously improve.

What we offer

• Ensuring you and all our Heroes are looked after, happy, and healthy is always on the menu.
• 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 of holiday, with an additional day in the 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.

Technologies and skills

• LangGraph
• Haystack
• LangChain
• Pinecone
• Python
• LlamaIndex
• Weaviate

Our expectations:

Qualifications

• Deep knowledge of RAG, LLM mechanics, prompt design, and chaining.
• You take ownership. If something is unclear or blocked, you figure it out or find a way around it.
• You move fast but don't cut corners - you care about quality and impact.
• You believe working code beats perfect plans, and that iteration is the fastest way to clarity.
• Judge models, feedback loops, or human-in-the-loop architecture.
• Vertrautheit mit Prompt-Injection-Abwehr, Output-Validierung oder Agentensicherheit.
• Background in shipping AI inside real-world web or mobile products.

Experience

• 2+ years of experience in applied AI/ML engineering with real-world deployments.
• Strong Python skills and experience with frameworks like LangChain, LlamaIndex, or Haystack.
• Experience with vector databases (Pinecone, Weaviate, FAISS) and embedding models.
• Nice to have: Open-source model experience (e.g., LLaMA2, Mixtral, Mistral) or custom inference stacks.
• Experience designing test harnesses using agent personas or synthetic users.

Benefits

• Day Care for Kids
• Flexible Working Hours
• Snacks, Sweets
• Fresh Fruit
• Massage, Yoga, etc.
• Relocation Support