John Ostrowski 🔎📈💰

I hired and structured the first Growth/CRO cross-functional team to replace CRE (Conversion Rate Experts agency) for Brainly throughout their expansion phase from 300 to 400 Million Active Users (MAUs). From Beyond Entrepreneurship 2.0, I'll remind you of the most important business metric that's often forgotten on executive meetings, what's the percentage of key seats you have filled with the right people in your organization.

I built the early stage of my career on data analytics, AB testing, user research, and project management, the building blocks of conversion optimization. If you are a founder willing to evolve testing because you believe in the aggregation of marginal gains, an investor running due diligence on a new acquisition prospect, an agency Head Of that offers conversion services, a specialist looking for tactical and method advice — I can mentor and share personal first hand experience with you.

After moving to Product, I worked closely with product designers and art directors. Those experiences honed my intuition for great design, UI solutions, component work, interactions, and user experience. After many hours of Balsamiq napkin sketch and Maze tests, if you're looking for design critique, optimizing existing experiences from 1 to 100, or a leader creating net new experiences from 0 to 1 — I can mentor and share first-hand experience.

I covered a lot of mileage in all things Reforge and had the privilege to learn from very experienced Product VPs along the journey. Mentees often bring questions on product rituals, artifacts, and ways of working cross-functionally to master shaping the product, shipping the product, and syncing the people.

My career grew with a UX flavor after going through Reforge's User Insights for Product Development program. I got to chance to work and learn from Sr. researchers from Slack and Facebook. At Money.ca I had the pleasure of working with Mindberry on a year-long research discovery program that started our continuous discovery practice. If you are looking for design/prototype critique, trying to design a usability test for a relevant decision — I can mentor and share personal experience.

Went through Ed Donner and Product School material on Claude Code for PMs, then led one of the "super builder" teams at a major portfolio company as an experiment of how fast a small unit can move if everybody ships code.

Supported the migration of a major Hungarian e-commerce platform to Shopify Plus during its initial launch in Europe. Then built and managed a data platform for a portfolio company's numerous search-first products.

I'm a power user of obsidian and received positive community feedback from my capturing system. I use multiple advanced features and maintain an Obsidian Publish as my open knowledge base for the community. Check it here https://positive-experiments.com/KnowledgeBase/Content/Capturing+systems

Audit the technical SEO side of your website, understand the performance of your organic traffic efforts, study content and keyword gaps to move faster than the competition. I'm happy to support you with ahrefs!

Delegate and manage with confidence following a strong and repeatable process. Project management is where I'm able to add the most from my engineering background to the marketing world.

Google Analytics is a lovely platform but harmful to your decision making when set up wrongly. Count on me for supporting your analytics health-check, setting goals and funnels. GA is my bread and butter for conversion research.

I'm an enthusiast of storytelling with data. Data Studio will help us to power not only great-looking dashboards but interactive analysis that tells your team a growth story.

My favorite tool. I worked on multiple tracking plans to support PPC teams with conversion tracking, behavior data (events) for better remarketing, automation, and funnel mapping. Tag Manager allows us to learn from user's interactions without messing with coding.

Both Hotjar and SessionCam are my go-to qualitative tools for understanding the first level of WHY something is happening after we see WHAT is happening (from data tools). Heatmaps and recordings with auto taggings are my bread and butter to QA experiments in production, analyse behavior in particular funnel segments and all that jazz.

Extensive use of Jira Product Discovery and Jira Cloud for all things Product Management and delivery sprints. Ran countless backlog refinements, sprint plannings, and product roadmap.

Connected multiple sources using Facebook Ads, Google Ads, and Shopify connectors (for Shopify Revenue and AOV true value) for a single source of truth Google Data Studio dashboard for Shopify Plus accounts