Senior AI Engineer (f/m/x)

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. 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 thisWork 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. 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 Our current benefits Work Environment & Support: Flexible working hours with a flexible work set-up combining office & remote work Food & Beverage: Free drinks, fruit and veggie baskets, snacks and Friday beers Sport: Subsidized gym subscriptions Mental Well-being: Access to our mental health platform offering regular 1o1 sessions with coaches, trainers and psychologists Travelling: Free yearly stay in one of our apartments of your choice Tech: Possibility to choose between Windows Lenovo or Macbook Culture: Yearly Company Offsites, regular team events, Christmas party, summer party 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!