LLM AI Engineer — Build Production AI Platforms (Hybrid)

Migx; Barcelona; Híbrido; EUR 90.000 - 130.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid work model

25 holiday days per year

Career development opportunities

Fast-growing, international company

Descripción de la vacante

Migx is seeking an Artificial Intelligence Engineer to join its Data and AI Engineering team. You’ll turn latest AI advances into production-ready tools, applications, and platforms, focusing on LLM-powered solutions for life sciences.

You’ll design scalable AI infrastructure, collaborate with Data and Backend Engineers, and contribute to CI/CD, testing, and observability. Fluency in English required; Catalan/Spanish is a plus.

Formación

• Hands-on experience deploying or building LLM-based systems.
• Proficiency in Python with FastAPI or similar frameworks.
• Experience with embeddings for text/document representation and semantic search.
• Familiarity with vector databases like FAISS, Weaviate or Pinecone.
• Understanding of AI infrastructure: versioning, tracking, and deployment with MLflow.
• Experience building production-grade APIs/services in an agile, collaborative environment.
• Awareness of AI ethics, responsible AI practices and explainability.

Responsabilidades

• Design, build, and deploy LLM-powered applications and internal tools for use cases such as document understanding, process automation, and knowledge retrieval.
• Develop reusable AI infrastructure and platform components that support application teams (e.g., retrieval-augmented generation, prompt management, model orchestration).
• Work with embeddings, vector stores, and similarity search to enable contextual AI responses.
• Integrate with vector databases to support semantic search and information retrieval.
• Build scalable APIs and services using FastAPI or similar frameworks.
• Use MLflow to manage model experimentation, versioning, and deployment.
• Collaborate with Data Engineers and Backend Engineers to ensure smooth data access, secure service delivery, and continuous integration.
• Apply good engineering practices around testing, observability, and CI/CD for AI components.
• Support discussions on AI ethics, responsible usage, and explainability — especially for regulated use cases.
• Contribute to architectural decisions, product discussions, and agile ceremonies.

Conocimientos

LLM experience

Python

FastAPI

Embeddings

Vector databases

MLflow

CI/CD

Agile

AI ethics

Herramientas

Docker

Kubernetes

LangChain

LLamaIndex

Azure

AWS

GCP

FAISS

Weaviate

Pinecone

MLOps

Descripción del empleo

Migx is seeking an Artificial Intelligence Engineer to join its Data and AI Engineering team. You’ll turn latest AI advances into production-ready tools, applications, and platforms, focusing on LLM-powered solutions for life sciences.

You’ll design scalable AI infrastructure, collaborate with Data and Backend Engineers, and contribute to CI/CD, testing, and observability. Fluency in English required; Catalan/Spanish is a plus.