apt. was founded in 2015 by Leonie Markhorst-Kushka – a Dutch brand strategist and creative whose international experience and global network guide her in building brands that connect worldwide and resonate locally.

Now based in Berlin, Leonie works with an international roster of clients, helping them position in the German market and beyond. Her work is rooted in the belief that strong brands live at the intersection of performance and connection – where strategic clarity meets authentic engagement.

Leonie founded apt. to meet the growing demand for marketing that delivers both measurable results and meaningful resonance. Taking a multidisciplinary approach, she combines data and insight with creativity and intuition to create brands that both deliver immediate impact and lasting value.

Specializing in strategy, consulting, and advisory, Leonie helps brands define identity and elevate presence through digital marketing, creative direction, events, and bespoke partnerships – delivering tailored solutions that foster relevance, connection, and sustainable growth.