Learn directly from Jakub Linowski

I came into this course with a mature experimentation program already in place and still walked away with clearer thinking, sharper frameworks, and a much stronger guardrail for designing tests that actually matter. What stood out most is how practical the content is. Jakub doesn’t waste time on theory for theory’s sake. He goes straight into the real design flaws that quietly kill experiments: weak triggers, underpowered setups, confounding changes, poor metric design, and tests that are structurally incapable of surfacing the signal you think you’re measuring. Even with an experienced team, I found immediate ways to improve how we design and evaluate tests. The examples, discussions, and review session make the concepts stick, and you walk away with tools you can use the same day. If you want to reduce throwaway tests and run experiments that actually move the business, this course is a strong investment.

The course helped me think through many ways I can improve my experimentation workflow and factors that can influence results. Jakub clearly has a breadth of experience in the space and provides many examples that drill down the concepts.

As a product designer, this course helped me a lot to build a strong foundation in A/B testing and also during the planning phase. Jakub also provides a deep understanding of all the variables that need to be taken into account when preparing an experiment. Additionally, he shares valuable resources and an excellent workflow to collaborate with your team and run better experiments. Definitely a great course.

I really appreciated that the course was packed with real life examples and was interactive, it made the concepts much easier to grasp. Thanks to this course, I now have a more structured approach to running experiments and less throw away experiments.

This course really helped me step back and see the bigger picture with my A/B tests. It breaks down all the different factors that can impact results, which is super helpful when you're deep in the weeds. It gave me the clarity I didn’t realize I was missing.