AI Engineer - LLM / Agentic Systems (f/m/x)
We are building a new AI team within a project in the digital healthcare / data-driven marketing domain. We are looking for both a Tech Lead and Senior Engineers who will work together as one cohesive team.
The role focuses on designing and delivering production-grade AI systems powered by LLMs in a real-world, regulated environment.
Your tasks
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
Requirements
Minimum 5 years of commercial experience in software development or AI/ML engineering
Strong Python skills with solid software engineering practices (modular design, testing, code reviews)
Hands-on experience with LLM frameworks such as LangChain, LangGraph, or LlamaIndex
Experience with vector databases (e.g., Pinecone, Weaviate, pgvector, OpenSearch)
Practical experience building RAG pipelines and working with unstructured data
Experience working with SQL and cloud-based data systems
Availability to start within 2 weeks due to a fast project kickoff
Fluency in English
Residing in Poland required
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
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
If you want to work on systems with high operational significance - apply now!