Hello from around the world ☕️ ☀️
We are a rare combo of siblings in technology, and we found in Substack a place to keep some of the interesting conversations we have as we go places and meet people.
Expect a mix of short interviews with industry leaders, our experience building products, running experiments, and investing in the stock market.
Marina Ostrowski
Open-minded Brazilian and hard-working Polish. Conversion specialist and product enthusiast, passionate about bringing joy through technology and making projects that make life easier through the chaos of the 21st century. She works at AWA Digital, where she improves user experience through research and testing across various industries and countries. Outside of Experimentation, she's passionate about games, art, and literature, is neurodivergent, and advocates for diversity.
To see her babbling about life, check marinaostrowski.pl.
She’s two clicks away on LinkedIn.
John Ostrowski
John Ostrowski, Polish Brazilian, Director of Product with a background in mechanical engineering, and a passion for building products and portfolios that compound over time. At Moneywise and Money.ca, he leads the news product and experimentation across personal finance content, bridging the gap between reading experience and monetization. Outside of Product, he's an investor with a long-term mindset — a lens that shapes how he builds, communicates, and bets on what matters.
For PJ's thoughts on life, check positivejohn.com. For his money moves, check eToro.
He’s two clicks away on LinkedIn or GrowthMentor.
