Senior AI Engineer (f/m/x) Office HQ - Berlin, Germany · On site →

Welcome to Arbio – where AI meets hospitality, and every day is a step toward redefining short-term rentals across Europe.

Arbio is a fast-growing, AI-enabled hospitality company. We are redefining the short-term rental industry through technology-driven efficiency, exceptional guest experience, and scalable operations. As a team, we're shaping the future of hospitality with cutting-edge AI solutions, expanding rapidly across Europe, and building on a culture of performance and accountability. Join us as we lead the industry and create opportunities for growth, innovation, and success.

Job requirements

What you will add to our Crew

• Deep knowledge of LangChain and agent architectures
• Expertise in MongoDB vector search
• Comfort working with multiple LLM APIs

What you will add to our Crew

• Strong TypeScript skills
• Proven experience building RAG systems end-to-end
• Deep knowledge of LangChain and agent architectures
• Expertise in MongoDB vector search
• Comfort working with multiple LLM APIs

Bonus Points

• Prompt engineering, fine-tuning, or chunking strategies
• Debugging production AI systems and familiarity with evals techniques
• Background in hospitality or enterprise knowledge management

Why you will love this

• Work with cutting edge technology
• Build something some scratch, with direct impact on product direction
• Competitive salary and a cool Berlin office
• Be among other builders, with an AI-first mindset.

Job responsibilities

As an Senior AI Engineer, you’ll build the intelligence layer that powers our operations—from property management to guest services. We’re developing cutting-edge Retrieval-Augmented Generation (RAG) systems that transform scattered data into instant, actionable insights, enabling our teams to deliver world-class guest experiences.

As an Senior AI Engineer, you’ll build the intelligence layer that powers our operations—from property management to guest services. We’re developing cutting-edge Retrieval-Augmented Generation (RAG) systems that transform scattered data into instant, actionable insights, enabling our teams to deliver world-class guest experiences.

You will have an impact on

• Designing high-performance RAG pipelines using MongoDB Vector DB for lightning-fast semantic search
• Building LangChain-based agent workflows for complex reasoning tasks
• Integrating multiple LLM providers (Claude, OpenAI, Gemini)
• Writing clean, scalable TypeScript code to support rapid growth
• Monitoring & optimizing with LangSmith and other LLMOps tools
• Collaborating with a small, agile team to push the boundaries of AI in hospitality

• Real impact, not AI theater. Airbnb & Booking hand you soulless AI replies - build the better ones.
• Unlimited token budget, seriously. Opus 4.6, GPT 5.4, Gemini 3.1 Pro - whatever makes you more productive, you get.
• A culture that ships, not debates: short, direct decisions instead of endless meetings. Plus a competitive salary, benchmarked against the market.
• Modern, centrally located office in Berlin. 25 days of paid vacation, Urban Sports or Wellpass, access to the Nilo mental health platform.
• Fully taken care of: lunch & dinner 3x/week, breakfast daily, snacks, coffee & matcha always stocked.
• Office Yoga, run club, team events - plus free stays at our apartments across Europe.

Our current benefits

• Real impact, not AI theater. Airbnb & Booking hand you soulless AI replies - build the better ones.
• Unlimited token budget, seriously. Opus 4.6, GPT 5.4, Gemini 3.1 Pro - whatever makes you more productive, you get.
• A culture that ships, not debates: short, direct decisions instead of endless meetings. Plus a competitive salary, benchmarked against the market.
• Modern, centrally located office in Berlin. 25 days of paid vacation, Urban Sports or Wellpass, access to the Nilo mental health platform.
• Fully taken care of: lunch & dinner 3x/week, breakfast daily, snacks, coffee & matcha always stocked.
• Office Yoga, run club, team events - plus free stays at our apartments across Europe.

What joining the Arbio Squad means for you

You will be part of a dynamic team of top-tier professionals from every domain, all united by a relentless drive. We are dedicated to nurturing and pushing each of our team members to unleash the best version of their professional selves. We believe in a culture of trusted ownership, caring meritocracy, and constructive feedback where we elevate each other while constantly challenging the status quo. Join a dynamic, young company with an entrepreneurial culture operating at lightning speed — with eyes set on global horizons!