Junior Data Engineer: Data Flow & Architecture

This year marks 10 years since we launched the idea that simplifying our customers' lives is possible by offering an innovative solution that allows them to easily subscribe to, manage, and switch all types of contracts through a unique and intuitive platform.

In that time, we have supported more than 2 millions customers in France, Spain, and Italy, while investing in new verticals and positioning ourselves as a highly efficient, innovative, and competitive scale‑up in a rapidly growing market.

With over 900 employees across 3 locations, we are solidifying our position as a market leader in Europe. We are always on the lookout for talent ready to join a dedicated and motivated team driven by a meaningful project. Working with us means embracing a culture of excellence, innovation, and real impact.

As a Junior Data Engineer you will be the guardian of data quality and lineage. You’ll be assigned to a squad where the complexity of data flows is high.



You won't just move data; you will design the logic that ensures our BigQuery data lake remains a "Single Source of Truth".

Responsibilities

- Advanced ETL/ELT: Design and implement data processing flows using Python and Airflow.
- Data Lineage: Help develop tools that track data from source to destination, ensuring transparency for all users.
- Reporting & Quality: Perform daily reporting on the health of customer and internal data flows.
- Custom Tooling: Build internal Data Engineering tools to replace manual tasks—no SaaS "black boxes" here.

Your profile

- Engineering school background in Software Development.
- Tech: Mastery of Python (OOP) and strong SQL (BigQuery is a plus).
- The Edge: You love designing complex systems and have a high attention to detail regarding data integrity.

What we offer

Thrive in an international and inclusive environment: everyone has a place at papernest. With over 46 different nationalities, it’s not uncommon here to start a sentence in English and finish it en français or en español.

📌 Junior Data Engineer: Data Flow & Architecture (Barcelona)
🏢 Talent
📍 Barcelona