AI Engineer – LLM / Agentic Systems (f/m/x)

Your responsibilities, Design and develop production-ready AI systems based on LLMs and agent-based workflows, Build and maintain data pipelines for retrieval, orchestration, and evaluation, Implement solutions using frameworks such as LangChain, LangGraph, LlamaIndex, or custom approaches, Develop and optimize RAG pipelines (chunking, embedding, retrieval, reranking), Integrate LLM models (OpenAI and open-source) and support model selection decisions, Collaborate with Data Science teams to productionize ML models, Build evaluation frameworks (metrics, test sets, regression tests) and monitor system performance, Create and maintain scalable AI infrastructure in a cloud environment What we offer, Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas, Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market, We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022, Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more, Comfortable workplace – class A offices or remote work, Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application, PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers, Investment in your growth – meetups, webinars, training platform and technology blog – you choose, Fantastic atmosphere created by all Sii Power People