About Us
An agency for modern attention.
Sin Strès was founded by Sem Hulsmann and Eef Doeleman. What started as a childhood passion for cameras, videos and internet culture evolved into a creative agency focused on modern attention — short-form content, social media growth and the websites brands live on.
Founders
Sem & Eef.
Sem studied at the Herman Brood Academie and developed a strong understanding of branding, storytelling and how content spreads online. Besides marketing, he is also active as a musician, which heavily influences the creative direction of the agency and the understanding of internet culture and audience behaviour.
Eef works as a photographer and focuses strongly on visual quality, creative direction and strategy. Together, they combine creativity with a deep understanding of modern short-form content and how attention works on platforms like TikTok and Instagram.
The beginning
Since they were three.
Sem and Eef have known each other since they were three years old. From a very young age, they were already making videos together, creating YouTube channels and experimenting with content, editing and storytelling — long before social media became what it is today.
That shared passion naturally grew into what is now Sin Strès — a creative agency built on a lifetime of making things together.
What once started with childhood YouTube videos has grown into a modern creative agency built around storytelling, culture and attention.
20+
Years of friendship
∞
Videos made
1
Shared vision
Our focus
Sin Strès creates short-form content for TikTok and Instagram, and designs the websites brands live on — not only visually strong, but built for attention, engagement and conversion.
We work with businesses in tourism, hospitality, lifestyle and experience-based industries — taking the full creative process out of their hands. From concept to filming, editing and posting, all the way to the modern website it all lives on.
Agency values
Made with care.
Visual first
Every frame is composed. Every cut earns its place.
Built for the feed
We design for the platforms people actually live on.
Locally grounded
We live, shoot and think on the island — and it shows in the work.
Long-term partners
We don't ship one-offs. We build seasons of content.
