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

As Head of Agency Sales UK, your role is to develop and expand our agency partnerships to maximize revenue growth. You will be responsible for driving adoption of Sparteo’s solutions within media agencies, ensuring strong relationships with key decision-makers, and delivering exceptional value to our partners.

To specify

Business Development & Revenue Growth

• Identify, prospect, and onboard new agency partners across the UK market.
• Develop and execute a strategic sales plan to grow revenue within agency accounts.
• Negotiate and close high-value deals, ensuring alignment with Sparteo’s commercial objectives.
• Monitor and optimize sales performance metrics, forecasting revenue and ensuring targets are met.

Relationship Management & Key Account Growth

• Build and nurture long-term relationships with media agency executives (MDs, Heads of Programmatic, Trading Directors).
• Act as a trusted advisor, educating partners on Sparteo’s solutions and market trends.
• Work closely with internal teams (CSM, Product, Marketing) to maximize agency satisfaction and retention.

Market Intelligence & Competitive Positioning

• Stay ahead of industry trends, competitor strategies, and emerging technologies.
• Identify new opportunities to differentiate Sparteo’s offering and strengthen our position in the agency ecosystem.
• Provide market feedback to product teams to enhance Sparteo’s value proposition.

Your profile for this job

• 7+ years of experience in AdTech/MarTech with a proven track record in agency sales
• Strong network within the UK media agency landscape
• Expertise in consultative sales and engaging C-level stakeholders
• Solid understanding of programmatic, digital advertising, and data-driven marketing
• Resilient, driven, and thrives in a fast-paced, high-growth environment

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.

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.