Hadrien Gaillet

Background

About Hadrien Gaillet

Digital-first marketing leader with 6 years of end-to-end expertise - strategy, execution and data science. I turn complex acquisition challenges into predictable growth engines, blending paid media (Meta, Google, TikTok, Snapchat) with SEO, CRO and CRM automation. Today, I own the full digital mandate for Plan International Belgium, managing the annuel media budget, a company-wide SEO transformation and a server-side tracking stack on GA4 + BigQuery - all while leading and coaching a junior marketer from my remote base in Montréal. What I do today- Own the full digital mandate at Plan International Belgium: management of annual media spend across Meta, Google, TikTok & Snapchat- Build the data backbone: server-side GTM, GA4 + BigQuery models, Looker dashboards everyone understands- Lead & coach a junior marketer, translating strategy into agile sprints and clear feedback loops- Develop SEO to position the organisation as an authority and unlock sustainable organic growth. How I work- Collaborative & autonomous: I thrive in cross-functional teams or as a one-person growth lab, moving seamlessly between brainstorming sessions and deep-focus execution- Self-learner & adaptable: I continuously up-skill (from server-side GTM to GA4 SQL models) and pivot quickly when platforms, algorithms or business goals shift- Ambitious, outcome-driven: I set bold targets and track every metric to ensure each initiative delivers concrete, measurable impact- Technical depth + strategic altitude: equally at ease writing SQL in the morning and presenting board-level growth scenarios at noon, always linking data to business value.