AI Data Engineer

On Site Full TimeBarcelona, Catalonia, SpainLifelancer

We are seeking a mid-level Data Engineer to join our AI team. The role will involve building, operating, and enhancing the data infrastructure supporting our Agentic AI initiatives.

Requirements

  • Design, develop, and maintain scalable data pipelines and ETL/ELT processes supporting AI research, prototyping, and production use cases.
  • Collaborate with AI scientists and engineers to translate data requirements into ingestion, transformation, and serving solutions.
  • Apply data governance and security controls ensuring compliance, auditability, and protection of sensitive information.
  • Monitor, troubleshoot, and resolve data pipeline failures, performance issues, and schema changes.
  • Continuously improve reliability through testing, observability, documentation, and automation.
  • Design and maintain efficient data models (e.g., star schemas, feature-ready datasets, semantic layers) supporting analytics, ML workflows, and AI agent operations.
  • Implement automated data validation, schema checks, and pipeline testing to ensure high-quality data delivery across systems.
  • Contribute to data architectures supporting agent workflows, including training data preparation, retrieval layers, and inference logging.
  • Build and enhance pipelines supporting near real-time agent interactions and feedback signals.
  • Strong SQL skills, with experience designing analytical queries and working with relational and NoSQL databases.
  • Implement and operate vector embedding stores, knowledge graph ingestion pipelines, and retrieval mechanisms.
  • Implement data quality controls suitable for ML/LLM pipelines in regulated environments.
  • Assist with performance tuning to reduce latency in agent-driven workflows.
  • Familiarity with infrastructure-as-code and automated deployment for data pipelines.

Benefits

  • Generous Paid Time Off
  • 401k Matching
  • Retirement Plan

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