Customer Success Manager - Demand

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 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

We are looking for a Supply Monetization Technical Expert to support our publisher partners in maximizing the value of their inventory. In this role, you will work closely with supply teams to provide technical assistance, best practices, and implementation guidelines, with a strong focus on monetization strategy and demand optimization.You will act as a trusted technical advisor to English- and French-speaking publishers, helping them configure and optimize their ad stack and ensure seamless integration with the Sparteo Prebid stack. A deep expertise in Google Ad Manager (GAM) is essential, as more than 80% of our clients use this environment.

Ad Stack Integration & Implementation

• Support publishers in integrating their inventory with the Sparteo Prebid stack

• Ensure correct implementation of ad tags, wrappers, and demand connections

• Validate end-to-end integrations from the publisher environment to Sparteo systems

• Troubleshoot integration issues impacting delivery, revenue, or reporting

Google Ad Manager Expertise

• Act as an internal and external subject-matter expert on Google Ad Manager

• Optimize GAM setups including line items, key-values, pricing rules, and ad units

• Diagnose issues related to trafficking, delivery discrepancies, and revenue drops

• Provide debugging support using relevant tools and methodologies

Demand Optimization

• Identify revenue opportunities and underperforming segments

• Work closely with demand and supply teams to improve bid density and win rate

Your profile for this job

• 3+ years of experience in AdOps, Technical Account Management, or Publisher Support

• Expert-level knowledge of Google Ad Manager (mandatory)

• Strong understanding of ad server and header bidding setups

• Experience with Prebid or similar wrapper solutions

• Technical understanding of programmatic advertising and demand partners

• Hands-on experience debugging monetization issues (GAM, Prebid, SDKs, macros, etc.)

• Ability to translate complex technical topics into simple guidance

• Comfortable working directly with publishers and external stakeholders

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.