We’re looking for a Client Success Trainee to join our team in Madrid and play a key role in shaping the future of neuro-contextual advertising at a global scale. Who We Are Seedtag is the leading Neuro-Contextual Advertising Company. We are redefining how advertising works in a privacy-first world by moving beyond keywords and cookies, towards understanding human emotion, intent, and context. Powered by advanced AI and neuroscience, our proprietary technology, Liz, delivers a deep, human-like understanding of content and attention. This enables brands to connect with audiences at the right moment, in the right mindset, with ads that are relevant, engaging, and respectful of the user experience. Founded in 2014 by two ex-Googlers, Seedtag has grown into a global company with 700+ Seedtaggers across 17 countries, backed by €250M in funding, and expanding rapidly across the open web and Connected TV. We’re not just building technology, we’re rewriting the rules of advertising. Your Challenge As Client Success Trainee, you will:



Support the day-to-day management of digital advertising campaigns to ensure smooth execution Collect and organise performance data to assist in the preparation of client reports Participate in internal and client meetings to better understand objectives and needs Collaborate with Sales and Operations teams to support campaign delivery and optimisation What You’ll Need to Succeed Advanced proficiency in Excel or Google Sheets and data analysis tools Good level of English (minimum B2) International and multicultural mindset, with an interest in working with global teams Proactive attitude, willingness to learn, and ability to suggest improvements and new ideas Why Join Seedtag? This is a defining moment to join Seedtag, a company that combines scale, ambition, and soul. Growth & Opportunity: Accelerated, hands-on development with real ownership, integral projects, and internal mobility. Flexibility: We trust you to balance work and life with flexi

📌 Client Success Trainee (Madrid)
🏢 Seedtag
📍 Madrid