Are you passionate about digital performance and dreaming of mastering the art of paid acquisition (SEA, Social Ads)? Join the Traffic & Acquisition team at Decathlon Belgium HQ! This internship is your ideal playground to learn how to manage real budgets on the market's most powerful platforms. We are looking for a future expert to help us optimize every click and boost our sales. Your Mission Integrated into the Traffic & Acquisition team, your mission will be to transform our commercial objectives into measurable digital successes, focusing on the performance of our paid campaigns. Your Key Responsibilities: Actively participate in the setup, monitoring, and optimization of campaigns across Google Ads (SEA), Meta (Facebook & Instagram), and TikTok. Conduct in-depth performance analysis (CPC, ROAS, audiences, etc.), write clear reports, and propose concrete recommendations for continuous improvement. Contribute to the creation of ads (copy & visuals) and implement rigorous A/B tests to maximize results. Contribute to the strategic choice of audiences, keywords, budgets, and objectives for Decathlon's digital acquisition. Work in close collaboration with creative and commercial teams to align campaigns with business objectives. Conduct constant competitive and sectoral monitoring on the latest Paid Media & Social Ads trends. You are the ideal candidate if you are ready to juggle creativity and numbers, and if you share our passion for sports ! Early adopter of platforms, you have a great desire to learn about Google Ads and Meta Business Manager. You are an excellent communicator capable of working in a team (with the SEO, Direct Marketing & CRM teams). Moreover, You are studying marketing, digital marketing, business or any other related field. You speak French and/or Dutch. Speaking English is a plus. You are looking for an internship for a minimum of 3 months. Ready to Play? Compétences souhaitées SEA, Social Media, Analytics, Curious, creative.Decathlon HQ