Lead Data Engineer

Sparteo is an independent suite of AI-powered advertising technologies built on sustainable, sovereign infrastructure.

Since 2018, we’ve been reshaping programmatic advertising to make it faster, more transparent, and more profitable by building the most direct path between publishers and advertisers.
But we don't stop here: wherever attention lives, on the web, in apps, on CTV, and beyond, our mission is to monetize all audiences , across every format: display, video, audio, and more. Our data-driven tech delivers 30% higher revenues on average than traditional solutions.Our Solutions:
→ Actirise for intelligent display monetization
→ FastCMP for seamless and compliant consent management
→ Meetscale SSP for programmatic optimization
→ Viously for High-impact video monetization
→ Voxeus for audio monetizationBehind Sparteo’s growth is a team of 100+ talents across 11 countries, united by a shared ambition to redefine the future of digital advertising.Our dedication has placed Sparteo among the most dynamic tech players in Europe:

• FT1000 ranking – Among the fastest-growing European companies in 2024 & 2025
• The Europas – Featured in the list of 100 hottest startups
• Pixalate Ranking – #1 Web SSP in France with our Actirise solution

These milestones are just the result. What truly sets us apart is how we work: at Sparteo, we don’t settle, we act.

• We are Drivers, not passengers: We take the wheel and own our results.
• We are data-obsessed : Facts guide us — not assumptions, not egos.
• We think as one : Collective goals come before personal wins.
• We trade off : We simplify, prioritize, and go for high-impact results.
• We solve problems : We own challenges and turn ideas into action.
• We say what we do : Radical transparency is how we grow — no fluff, no hiding.

Discover our journey, products, and culture on 👉 our website 👈

Your Job

To specify

• Data Infrastructure Design and Optimization
  • Lead the design, implementation, and optimization of data architectures to support massive data pipelines.
  • Ensure the scalability, security, and performance of the data infrastructure.
  • Collaborate with software and data scientists to integrate AI-driven models into data workflows.
• Leadership and Team Management
  • Manage and mentor a team of 2 data engineers, fostering a culture of continuous improvement.
  • Oversee project execution and delegate responsibilities within the team.
  • Guide technical decisions and promote best practices in data engineering.
• Collaboration and Cross-Functional Engagement
  • Work closely with product managers, developers, and analytics teams to define data needs and ensure alignment with business objectives.
  • Ensure the data team supports the product’s analytical capabilities.
• Innovation and Problem Solving
  • Identify opportunities to leverage new technologies or improve existing workflows to optimize data processing.
  • Maintain a deep understanding of data trends and emerging technologies.

Your profile for this job

• Technical Skills :
  • Proficiency in distributed data systems.
  • Proficient in clustering, various table types, and data types.
  • Strong understanding of materialized views concepts.
  • Skilled in designing table sorting keys.
  • Solid programming skills in Python, Java, or Scala.
  • Expertise in database technologies (SQL, NoSQL).
  • You are comfortable using AI-assisted development tools (e.g., GitHub Copilot, Tabnine).
• Leadership Skills :
  • Proven experience leading data teams in fast-paced environments.
  • Ability to mentor junior engineers and foster a culture of growth and collaboration.
• Analytical Mindset :
  • Data-driven decision-making abilities aligned with Sparteo's focus on results and improvement.

Your mind set to share our adventure

• You want to make an impact and move things forward collectively. Does hearing phrases like "Yes, but we've been doing it this way for years..." make your hair stand on end? We feel the same way: progress is made by questioning what already exists.

• You solve problems pragmatically and analytically.

• You're looking for a fast-moving environment where your agility will be an asset. The 80-20 (Pareto) principle holds no secrets for you.

• Your ability to listen encourages you to challenge and improve yourself on an ongoing basis.

Our working conditions

• A convivial and flexible working environment, with our telecommuting culture integrated into the company's organization.

• A friendly and small-sized team that you can find in our offices near Lille or in Paris.

• Social gatherings and company events organized throughout the year.

• Sparteo is experiencing significant growth both in terms of business and workforce, especially internationally.

• Additional benefits include an advantageous compensation system with non-taxable and non-mandatory overtime hours, as well as a Swile restaurant ticket card.

At Sparteo, we believe diversity is a strength. We are committed to providing equal opportunities and fostering an inclusive work environment. We encourage applications from all backgrounds, identities, and experiences.

Ready to join Team Sparteo? Send us your CV and continue the recruitment process!

Here are the stages in our recruitment process

• Discussions about your driving forces, your ambitions and our Sparteo mindset

• Analytical and business logic tests

• Discussions with one or more members of the Sparteo team, including your future manager

• Taking up references

Our recruitment process is mainly conducted by videoconference; however, certain stages may require a face-to-face meeting.