Senior AI Engineer

Senior AI Engineer

osapiens

Mannheim, Germany

Your Responsibilities

• Design, build, and deploy AI agents and agentic systems that become an integral part of our global SaaS products.
• Develop LLM-powered services and multi-agent architectures, enabling models, tools, and data sources to work together across complex workflows.
• Build, fine-tune, and deploy open-source LLMs and transformer-based models, including use cases such as intelligent search, entity resolution, information extraction, and document understanding.
• Design and operate RAG pipelines and AI services using structured and unstructured enterprise data.
• Take end-to-end ownership of AI solutions - from experimentation and model selection to deployment, monitoring, optimization, and production operation.

Your Experience

• At least 5 years of professional experience in AI, Machine Learning, or AI Engineering.
• Strong proficiency in Python and hands-on experience building production-grade AI applications.
• Practical experience with LLMs and transformer-based models, ideally including open-source ecosystems such as Hugging Face.
• Hands-on experience building AI agents or agentic workflows; experience with multi-agent systems is highly valued.
• Experience with RAG, tool/function calling, structured outputs, and retrieval/search architectures.
• Experience taking AI applications beyond PoCs into production environments, including deployment, monitoring, scalability, and performance optimization.

Nice to have:

• Experience fine-tuning or adapting LLMs/transformer models for specific domains or tasks.
• Experience self-hosting open-source models and working with GPU-based inference infrastructure.
• Experience with multilingual NLP and large-scale document processing.
• Experience working with enterprise, supply-chain, ESG, or compliance data.