Junior Data Engineer: Data Flow & Architecture

papernest; Barcelona; Hybrid; EUR 32,000 - 46,000; Full time

Benefits offered by this job

Medical insurance

Meals partnership

Training opportunities

Career development

Remote work 2 days a week

Breakfast sessions & partnerships in/​

Job summary

A leading technology company in Barcelona is seeking a Junior Data Engineer to handle data quality and design complex data flows. The successful candidate will implement ETL processes using Python and Airflow, ensuring data lineage transparency. An engineering background and strong skills in Python and SQL are essential. The role offers full-time employment with attractive benefits including health insurance and training opportunities. Join a diverse team driven by innovation and excellence.

Qualifications

• Mastery of Python (OOP) and strong SQL skills.
• Ability to design complex systems with attention to data integrity.
• The Edge: You love designing complex systems and have a high attention to detail regarding data integrity.

Responsibilities

• Design and implement data processing flows using Python and Airflow.
• Help develop tools that track data from source to destination.
• Perform daily reporting on customer and internal data flows.
• Build internal Data Engineering tools to replace manual tasks.

Skills

Python

SQL

Data integrity design

Education

Engineering school background in Software Development

Tools

Airflow

BigQuery

Job description

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.

💸 Compensation: a plan for Subscription Warrants for Company Creators (BSPCE) in accordance with company regulations, as well as a Pluxee card to manage your tax level through a voluntary compensation system across different services (transportation, dining, and childcare).

🏆 Benefits: as a home insurance provider and a supplier of green electricity and gas, we offer attractive deals to our employees. After all, there’s no reason why things should only be simpler for our customers!

🩺 Health: medical insurance through Alan or Sanitas to manage your healthcare expenses in an ultra‑simple, paperless way, with up to 50% coverage by papernest (after 6 months in the company).

🍽️ Meals & partnerships: a healthy breakfast offered every Tuesday, as well as partnerships with various services in Barcelona (restaurants, sports, leisure, and care centers).

📚 Training: the development of our employees is essential. You will have access to ongoing training tailored to your goals, whether it involves technical, language, or managerial skills.

📈 Career Development: numerous opportunities are available for you to grow, whether by deepening your expertise or exploring new paths. We support you in your professional ambitions.

✨ Remote Work: enjoy 2 days of remote work per week to optimise your focus and efficiency.

Hiring process

• 1st call with Talent Acquisition
• Interview with a team member
• Technical Case
• Interview with Alex - Head of Data Engineering

Interested in this challenge? 🙂

Don’t hesitate any longer—we look forward to meeting you! Regardless of your age, gender, background, religion, sexual orientation, or disability, there’s a place for you with us. Our selection processes are designed to be inclusive, and our work environment is adapted to everyone’s needs.

We particularly encourage applications from women. Even if you feel that you don’t meet all the criteria outlined in this job posting, please know that every application is valuable. We strongly believe that diverse and varied backgrounds enrich our team, and we will carefully consider your application. Parity and diversity are essential assets to our success.

Seniority level

Not Applicable

Employment type

Full‑time

Job function

Information Technology

Industries

Technology, Information and Internet