← PortfolioNokaut.pl · 2009

Conversion Optimization

A 24% conversion lift from a button color — and the experiment that established design as a discipline inside an engineering-driven company.

First in-house product designer

Conversion Optimization
24%
Conversion rate growth
1st
In-house designer at Nokaut.pl
Millions
Of product pages affected
2009
Promoted to leadership after

Context

In 2008 I was hired as the first in-house product designer at a Polish eCommerce startup, Nokaut.pl. Before I joined, design was either outsourced or done by engineers. Shortly after coming on board I noticed that most of the team considered design to be mere decoration.

Nokaut.pl was consumer-focused, and this disregard for design was starting to harm the business. To help the company grow I had to introduce a proper user-centered design process and prove the value of design. The beginnings were not easy — but thanks to my mentor, the co-founder and VP of Product, I found a way: direct collaboration with engineers, and constant work on business metrics.

In 2009 I was trusted with optimizing critical elements of the Nokaut.pl product page — really a collection of millions of individual pages, one per product, which collectively had the largest impact on overall conversion.

The approach

Together with the engineering team we worked out a series of hypotheses grounded in the factors that affect human attention — contrast, color, movement, pattern — and ran a series of multivariate split tests.

My role was as much about the team as the tests: running workshops to help engineers understand the value of design, showing how knowledge of human cognition leads to better business results, leading the collaborative “state the design hypothesis” exercise, and then wireframing, prototyping, and analyzing the results.

The buttons used in the test. Blue increased conversion by 24%.
The buttons used in the test. Blue increased conversion by 24%.

Results

One test — the contrast and color of the primary buttons — led to 24% conversion rate growth and changed Nokaut.pl forever.

The change was exciting for the entire team and was essential in establishing a real design process in the organization. Soon after, I was promoted to the leadership team.

Lessons learned

  • Great design is a result of understanding and empathizing with people.
  • Proving value in the currency the business already respects is the fastest way to earn design a seat.
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