Sales Planner Trainee

Intern / Student, Full-time · Bruselas

Job Description
We’re looking for a Sales Planner Trainee to join our team in Brussels and help shape the future of contextual advertising as we continue to expand globally.


Who We Are
At Seedtag, we lead the way in contextual advertising with our machine learning-powered platform. Our technology provides superior brand safety, human-like content understanding, and advanced cookieless targeting, making ads more engaging and respectful. Founded by two ex-Googlers in 2014, we’ve grown to over 700 Seedtaggers across 17 countries, raising €250M to revolutionise digital advertising.


Your Challenge
  • Support the Sales team with the preparation of proposals, media plans, and campaign materials.
  • Learn how to build and maintain relationships with agencies and direct clients.
  • Help educate customers on Seedtag’s products and solutions.
  • Collaborate with Account Managers on campaign setups and optimizations.
  • Conduct market research to identify opportunities and contribute with fresh insights.
  • Support in forecasting and reporting activities.


What You’ll Need to Succeed
  • You are a recent graduate or finishing your studies in Marketing, Business, Communication or similar.
  • You are eager to learn about sales, advertising and the digital media industry.
  • You have strong organizational and analytical skills.
  • You are fluent in English and either Flemish or French.
  • You are proactive, curious, and not afraid to share ideas.
  • You enjoy working in a team but can also handle tasks independently.

Why Join Seedtag?
Growth & Opportunity: A key moment to join with vast career development prospects.
Flexibility: At Seedtag, we trust you to balance work and life effortlessly with the option to work from home, the office, or even the beach in our hybrid mode.
Learning & Development: Online courses in ODILO, and optional English or Spanish group classes.
Inclusive Culture: We foster a supportive environment that values personal growth.
Fun & Connection: Participate in team activities, company offsites, and more!


Ready to join the Seedtag adventure? Send us your CV and let’s grow together!


At Seedtag, we’re committed to creating an inclusive environment where everyone can thrive. We welcome diverse perspectives as they fuel our innovation and growth. Please let us know if you require accommodations during the hiring process and we’ll ensure a positive and accessible experience.


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