About the job

We are offering a Sr Account & Ad Operations position in our Madrid office, to build the global contextual advertising leader.


Seedtag is the leading Contextual Advertising Platform. Our proprietary, machine learning-based technology provides human-like understanding of the content in the web, the highest level of brand safety in the industry and unmatched cookieless targeting capabilities.

We engage with the market on both demand and supply side to create, activate and launch high-quality advertising campaigns at scale. We are committed to creating a more beautiful, respectful and engaging way to do advertising.


2014 · Founded by two ex-Googlers

2018 · 16M total turnover & Internationalization & Getting growth

2021 · Fundraising round of 40M€ & +10 countries & +230 Seedtaggers

2022 · Fundraising round of 250M€ + expansion into the U.S market + 400 Seedtaggers


  • Working as an extension of the sales towards the client, by understanding their needs and looking for the best way to work together, creating strong relationships and happy clients
  • Coordinating with the design team to develop all the creative projects on time according to client requirements
  • Setting up and optimizing advertising campaigns with different KPIs.
  • Creating programmatic deals and advising traders on the best way to succeed with delivery and KPIs
  • Supporting with creative proposals and presentations, fully customized with the clients needs
  • Sharing weekly and monthly reports to clients and other departments involved in the process of a campaign
  • Participating on upselling strategies while highlighting optimisations made and results achieved in our campaigns
  • Ensuring a smooth invoicing process by collecting all the information and sharing it with our finance team on time


  • Have more than 2 year of experience as a trader or ad-trafficker in media agencies, DSPs, SSPs, publishers, or any related area
  • Have interacted directly with clients, agencies or partners, providing great service and ensuring fluent communication
  • Have worked with international brands or big clients that require tight deadlines and clear processes
  • Have experience with platforms like Xandr, Display & Video 360, Adform, SmartRTB+, Amazon DSP…
  • Have knowledge of programmatic campaigns and PMPs creation
  • Have experience with reporting tools (Ad Servers, Google Analytics, Turnillo, Redash, MODE, etc)
  • Are data-centered and are used to work and process data with Excel / spreadsheets, or other data tools, using formulas and dynamic tables
  • Are Dutch native speaker and English bilingual
  • Feel comfortable on dynamic environments, with flexible structures and project-oriented solutions


🚀 Key moment to join Seedtag in terms of growth and opportunities.

💯 One Seedtag: Work for a month from any of our open offices with travel and stay paid if you’re a top performer (think of Brazil, Mexico..., 🏖️)

🍽️🚘 Access to a flexible benefits plan with restaurant, transportation, and kindergarten tickets and discounts on medical insurance.

⌛ Real flexible schedule to balance work and personal life. You will be free to choose your work from home and office time with our hybrid style.

🏋 Gympass, you will have access to wellness apps with certified psychologists, nutritional plans, on-demand classes and much more.

🇬🇧 🇪🇸 🇫🇷 Optional company-paid English, Spanish and/or French courses.

📚 Odilo online school, where you can learn as much as you want.

🍻 We love what we do, but we also love having fun. We have many team activities you can join and enjoy with your colleagues!


    • Growth: International, highly demanding work environment in one of the fastest growing AdTech companies in Europe. We reject "that’s the way it’s always been done". In Seedtag you can find an energetic, fresh workplace, multicultural work environment where our members are from different countries in Europe, LATAM, US and so many more!
    • Impact: The chance to have a direct impact, here you don't work for the sake of working, we all have an impact on seedtag in our own way, rowing in the same direction.
    • Diversity of methodology and people: Seedtag DNA is unique and highly appreciated by very different types of Seedtagers. We embrace diversity and encourage everyone to seek the best version of themselves and to show who they really are. With a total flexible methodology.
    • Flexibility: At Seedtag, we trust you, you can work from home, the beach or the office in our hybrid mode .

    Are you ready to join the Seedtag adventure? Then send us your CV!