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Where code meets
Data and conversion

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Johanna Magdalena Profile Picture - CRO and Personalization Developer

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CRO | PERSONALIZATION DEVELOPER
CRO | PERSONALIZATION DEVELOPER
CRO | PERSONALIZATION DEVELOPER
CRO | PERSONALIZATION DEVELOPER
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 People-first conversions. Data-powered decisions. I bridge the gap between code and customer by building experiences that convert -  tested, proven, and refined through data.

5+

Years of experience

170+

Hypotheses Validated

300+

A/B Tests

Data uncovers where opportunities are hiding.

Through deep analysis of user behavior, site analytics, and conversion flows, friction points and potential gains become clear.No guessing. Just insight.

01

Experiments validate what drives real results.

Targeted A/B tests and personalization strategies are designed to confirm what works—moving ideas from assumption to proven outcomes.Precise, measurable, and conversion-focused.

02

Winning solutions are implemented and scaled for growth.

Successful variations go live, and the process repeats. Continuous optimization turns insights into lasting impact.Sustainable growth, not one-time wins.

03
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Showcasing creative and impactful solutions

Explore our work to see the transformative power of creative solutions and envision what we can accomplish together.

Testimonials

We take pride in building lasting partnerships and delivering solutions that exceed expectations.

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I worked with Johanna briefly at Native Instruments and was impressed by her blend of marketing and web development skills. She was able to take minimal direction and quickly turn ideas into working tests. Although our time collaborating was short, I believe she has strong potential and can be a valuable asset to any team looking for someone who understands both the technical and strategic sides of optimization.
Kyle Allain
Associate Direction, Web & E-Commerce - Native Instruments
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I was fortunate to have Johanna on the Lucoyo team as our first employee from the very beginning. Over two years, she developed modern UI components, translated prototypes directly into clean code, and regularly conducted user interviews. Thanks to her input, we were able to significantly lower the barrier to entry for psychotherapists and those seeking help, and today we have several thousand active users.Within the team, she impressed with her proactive ideas, clear communication, and reliable support during urgent challenges, thus playing a key role in our product's success.
Robin Menzel
Co-Founder - Lucoyo Health GmbH
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companies i worked with

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