About the position:
Can you imagine building AI-powered products that transform how business teams generate strategic insights?

Join our expert team to work on a Pharmaceutical sector product, contributing to the development of an AI platform that transforms enterprise knowledge into intelligent decision support.
- At ERNI, you are never just a number. Even if you work on an external project, you will feel part of the team and always supported.

How do we make this happen?

With people. Besides your team and manager, you will have several support figures like a godparent, who will help you with the practical and administrative aspects of daily life during your first 6 months.

And the second most important person after you, your mentor, who will guide you through your entire onboarding and career at ERNI. You will have regular 1:1 meetings with them, and recurrently, you will work on your development plan to define your short-, medium-, and long-term goals.

At ERNI, we highly value experience and technical knowledge. As a senior profile,



you will have the space to continue growing, whether by deepening your technical skills or having greater influence on project decisions, with autonomy and the opportunity to share knowledge with other experts.
- And if you are interested in mentoring, there is also space for that: supporting other ERNIans while still focusing on the technical excellence that sets us apart.

What you will bring
- Proven experience designing RAG and GraphRAG solutions, working with knowledge graphs, embeddings, vector search, semantic chunking, retrieval optimization and processing structured and unstructured enterprise data.
- Experience implementing agentic AI workflows using frameworks such as LangChain, LangFuse or Haystack, including prompt orchestration, tracing, evaluation and observability.
- Strong experience designing cloud-native microservices and APIs, working with Snowflake, PostgreSQL, Docker, OpenShift, Kubernetes and modern CI/CD pi

📌 Senior Full Stack Ai Engineer/llm (Barcelona)
🏢 Erni
📍 Barcelona