Verified testimonials
Client reviews
What clients and partners say about Stefan Dacey — a Geneva creative technology agency (branding, Next.js web, AI content systems, SEO/GEO and growth). Authentic testimonials from project archives and LinkedIn recommendations, across 250+ projects for 200+ clients (Caterpillar, L’Oréal, ICRC, Maurice Lacroix…).
Blandine Mandrillon
Marketing Director, Ladière Cellular Science · May 2020
“I presented the creative mockup internally and everyone loved it. Bravo to the whole team.”
Fabien Clerc
Co-founder, Helvecy · October 2020
“We never doubt your skills — we have the best. This project was a real challenge on every front, and the result is all the better for it.”
Joe Dincau
Co-founder, Helvecy · October 2020
“Day and night. We never questioned their dev capabilities — we've always been pleasantly surprised.”
Antoine Gustin
PhD in Finance · March 2018
“A rare combination of talent and execution speed. Stefan turns complex ideas into reality faster than anyone I've worked with.”
Leo Fritsch
Digital Professional · May 2021
“Stefan's energy and entrepreneurial spirit are contagious. His approach to problem-solving and his work capacity make him one of the most impressive professionals I've worked with.”
Kesja Plecha
SEO Specialist, Blueberry Dreams · March 2024
“AI, big data, social, SEO — Stefan delivers across every discipline. Versatile, efficient, consistently above expectations.”
Hannah Chinonso
Youth Development Consultant · April 2024
“I referred an influencer stuck at 10K to Stefan. Engagement went from 10–20 comments to 100+ per post, with likes consistently above 1,000. His growth strategies are unmatched.”
Jon Billington
Data & Analytics · April 2024
“Outstanding work on our big data project — ML-based customer segmentation, predictive ad targeting, dynamic pricing models, and marketing automation. Exceptional results.”
German Rodriguez
AI & Data · April 2024
“Stefan gave incredibly actionable advice on AI and automation, especially for social media. His understanding of how to leverage technology for real business impact is remarkable.”