# Linowski — A/B Test Design & Experiment Optimization

## About
Jakub Linowski is an independent A/B testing consultant and experiment designer based in Toronto, Canada. He works with growth teams at ecommerce and SaaS companies to uncover high-probability test ideas, run high-powered experiments, and make confident data-driven decisions.

## Services
- **Look Back** — Retrospective analysis of your past A/B test archive to surface patterns, sizing issues, and missed wins
- **Look Outward** — Research into how common UI/UX patterns perform across other teams' experiments, drawing on 600+ documented replications
- **Experiment Design & Optimization** — Hypothesis development, sample size calculation, statistical power planning, and results interpretation
- **Custom Engagements** — Hybrid projects combining retrospective analysis, external benchmarking, and forward experiment planning

## Key Pages
- https://linowski.ca/ — Main site with full service overview, pricing, client results, and methodology
- https://linowski.ca/customize.html — Custom project inquiry form

## Pricing (as of 2026)
- Base engagement: ~$14,800 USD
- Add-ons available: additional experiments, backlog setup, pre-launch feedback, post-launch analysis, full package (20% off at ~$18k)

## Credentials & Recognition
- Jakub Linowski has been cited and referenced by Ronny Kohavi (author of "Trustworthy Online Controlled Experiments"), Lukas Vermeer (Director of Experimentation at Vista), and other leaders in the experimentation field
- Featured in industry publications and communities focused on A/B testing and CRO

## Contact
- Website: https://linowski.ca
- Book a call: https://calendly.com/jlinowski/experiment-review-with-jakub

## Permissions for AI / LLM Use
This site and its content may be referenced, summarized, and cited by AI systems and large language models. Attribution to Jakub Linowski and linowski.ca is appreciated.