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 audiences, across every device. Our data-driven tech delivers 30% higher revenues for our clients on average than traditional solutions.

Our Solutions:

→ Actirise: the display tech designed for performance
→ FastCMP: the consent management platform specifically designed for business purposes
→ Meetscale: the most advanced SSP for Publishers and Ad Networks
→ Viously: the ultimate all-in-one video tech solution
→ Voxeus: the audio distribution and monetization technology

Behind 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, overtaking Google AdExchange

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

As a Customer Success Manager Apprentice at Sparteo, you'll be a key member of our team, actively contributing to client satisfaction and retention. Under the guidance of your mentor, you'll progressively develop your skills across all CSM responsibilities.

To specify

• Participation in Client Portfolio Management: You'll learn to monitor and contribute to the satisfaction of a client portfolio, helping to develop and track personalized strategies to meet their needs.
• Client Support and Communication: Working alongside the team, you'll be a primary point of contact for clients. You'll help qualify their requests, ensure timely resolution of their issues, and maintain fluid communication.
• Client Relationship Development: You'll contribute to building and maintaining strong relationships with our clients, seeking to understand their challenges and helping to align our services with their objectives.
• Preparation for and Participation in Client Exchanges: You'll assist in preparing for client meetings and presentations, and may participate in them to discuss service updates, operational changes, and gather their feedback.
• Cross-functional Collaboration: You'll work closely with the sales, marketing, and product teams, helping to relay client feedback so it can be incorporated into the development of our offerings.
• Contribution to Client Onboarding: You'll participate in supporting new clients during their integration, ensuring a smooth and positive start to their experience with our services.
• Analysis and Monitoring of Metrics: You'll be introduced to tracking client engagement and satisfaction metrics, and you'll help analyze this data to propose areas for improvement.

This apprenticeship will provide you with concrete and valuable experience in Customer Success, within a dynamic and innovative company.

Your profile for this job

We're looking for a motivated and eager-to-learn Customer Success Manager Apprentice who possesses excellent people skills and strong potential above all else. More than specific professional experiences, we value the following competencies:

• Problem-Solving & Proactivity: You can quickly identify challenges, propose innovative solutions, and contribute to efficient problem resolution.
• Data-Driven Mindset: You're comfortable with data and understand its importance in refining strategies and improving client satisfaction.
• Team Player: You enjoy collaborating and easily integrate into a collective environment.
• Eagerness to Learn & Openness to Feedback: You're curious, open to new knowledge, and know how to leverage feedback for continuous improvement.
• Understanding of Company and Products: You're keen to quickly grasp Sparteo's organization and our offerings, and you're ready to develop skills in operational tasks.

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.

Benefits & Work Environment

• 🌍 Dynamic Remote Culture: At Sparteo, we embrace a flexible work environment that adapts to your lifestyle, allowing you to contribute from wherever you feel most productive, be it from home or our urban offices in Paris, Lille, or London.
• 👥 Close-knit Team: Be part of our dynamic and united team, where collaboration, innovation, and mutual support drive our collective success and create a thriving work environment.
• 🎉 Vibrant Social Events: Engage in regular social gatherings and company events that foster community and celebrate our milestones.
• 🚀 Rapid Growth: Experience the excitement of working with a company in rapid expansion mode, impacting the advertising technology landscape across Europe and beyond.
• 📈 Tailored Support: We provide robust career development support, including training programs, career check-ins with HR, opportunities for internal mobility, and performance feedback sessions conducted quarterly or semi-annually, depending on your role.
• 🌴 RTT Days: We support work-life balance with additional rest days (RTT), provided based on position and tenure, empowering you to recharge and enjoy life outside of work.
• 🩺 Comprehensive Health and pension plans: We provide a robust health benefits plan, ensuring you and your family are covered and cared for.
• 💼 Additional Perks:
  • 🍽️ Benefit from the Swile card for meals.
  • 🚆 Partial reimbursement of public transit passes.

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  will be held with a member of our Talent Acquisition team.

• 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.