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 hungry: Always pushing for better, never settling for average.
• 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

Responsibilities

1. Design and User Experience

• Concept Development:
  • Develop design concepts and prototypes to solve user problems.
  • Collaborate with product managers and developers to understand requirements and translate them into design solutions.
• User Research:
  • Conduct user research to gather insights and validate design concepts.
  • Analyze user feedback and activity to iterate on designs.
• Interface Design:
  • Create wireframes, storyboards, user flows, process flows, and site maps to effectively communicate interaction and design ideas.
  • Design UI elements and tools such as navigation menus, search boxes, tabs, and widgets for our applications.
• Visual Design:
  • Ensure high-quality graphic standards and brand consistency.
  • Use a variety of design software to develop and execute visual design projects.

2. Collaboration and Communication

• Cross-functional Team Collaboration:
  • Work closely with engineering, marketing, and sales teams to ensure seamless implementation of design solutions.
  • Communicate design ideas and prototypes to developers.
• Stakeholder Management:
  • Present and defend designs and key milestone deliverables to peers and executive level stakeholders.
  • Incorporate feedback from stakeholders into design revisions.
• Documentation:
  • Maintain and enhance the design system documentation for use across the company.
  • Document design guidelines and ensure compliance across projects.

Your profile for this job

• Proven experience as a Product Designer or similar role.
• Portfolio showcasing design projects.
• Proficiency in design software (e.g., Sketch, Figma, Adobe XD).
• Strong understanding of user-centered design principles and best practices.
• Excellent visual design skills with sensitivity to user-system interaction.

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.

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.