Senior AI Data Engineer — NLP Pipelines & RAG Systems

Billennium; Poland; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Udemy for Business

Private medical care

Multisport card

Veterinary package

Language lessons

Shopping vouchers

Remote/hybrid options

Tech partnerships

Global collaboration

Innovative environment

Team-building events

Welcome pack

Job summary

Billennium is seeking a Senior AI Data Engineer to support enterprise AI solutions, copilots, and RAG-based systems, turning complex business data into AI-ready knowledge assets that power reliable applications.

You will lead ingestion pipelines for unstructured data, design governance and data quality frameworks, and ensure privacy and lineage while collaborating with global teams to deliver scalability AI data services.

Qualifications

• 5+ years in Data Engineering or Analytics with production pipelines.
• Strong Python and data processing skills.
• Experience with unstructured content like PDFs and Office docs.
• Experience building NLP/RAG data pipelines.
• Excellent stakeholder management across teams.

Responsibilities

• Lead data discovery, cleanup, and standardization across sources.
• Design robust ingestion pipelines for unstructured data.
• Build AI-ready knowledge bases using Postgres + pgvector.
• Define data quality and governance frameworks.
• Ensure data lineage and privacy compliance.

Skills

Python programming

Data processing & ETL

Unstructured data handling

NLP / RAG knowledge

Data quality & governance

Stakeholder management

Tools

PostgreSQL

pgvector

Job description

Billennium is seeking a Senior AI Data Engineer to support enterprise AI solutions, copilots, and RAG-based systems, turning complex business data into AI-ready knowledge assets that power reliable applications.

You will lead ingestion pipelines for unstructured data, design governance and data quality frameworks, and ensure privacy and lineage while collaborating with global teams to deliver scalability AI data services.