About Selzee
Selzee is an AI ad generator. It does the creative research for your brand, finds the ads printing money for other brands right now, and recreates them for yours.
It was built by three people who ran the ads and the creative process for D2C e-commerce brands.
Why we built Selzee
Three of us ran the ads and the creative process for big D2C e-commerce brands. Selzee is what all that work turned into.
Same job, different seats
We each worked in and around big D2C e-commerce brands, answering for the ads and the creative behind them. One of us built things, one wrote the hooks, one watched the numbers.
The work we did by hand
Read the reviews. Save the competitor ads. Pull the best lines from customer comments. Write the brief, wait for the designer, then start again next week.
Where it kept breaking
Ads wore out faster than we could replace them. The research sat in a doc, and by the time new creative went live, the market had moved on.
So we built Selzee
It does the steps we used to do by hand. It reads your market, finds the angles and makes finished, on-brand ads. Everything we learned is in there.
Who builds Selzee
Meet the founders
Simon Beno
Co-founder, Selzee
Simon builds the product and the AI. He took the creative process the three of them ran by hand and turned it into software, from the first market scan to the finished ad. He came to it as an engineer: he wrote software at Siemens Healthineers and studied Management and Technology at the Technical University of Munich.
- Has worked with hundreds of D2C brands while building Selzee.
- Software developer at Siemens Healthineers (C#, C++), 2023.
- Studied Management and Technology at the Technical University of Munich, and Business Intelligence and Technology at Midland University (Dean's List).
- CS50x Harvard Computer Science certificate.
Marek Rezo
Co-founder & CMO, Selzee
Marek is the creative side: hooks, angles and what makes a person stop scrolling. He studied psychology at Comenius University in Bratislava and brings it to every ad. He still runs Selzee's own paid campaigns day to day.
- Runs Selzee's paid search and paid social campaigns day to day.
- Author of 38 Selzee guides on ad creative, hooks and paid social.
- Bachelor's degree in Psychology, Comenius University in Bratislava.
Marián Cabadaj
Co-founder, CFO & COO, Selzee
Marián covers performance, numbers and operations. He is the one asking what the creative actually returns, where the budget goes next and how to scale what works. He brought that habit from finance, at Swiss Re Asset Management and UniCredit Bank, and today he runs Selzee's finance and operations.
- Investment Manager Oversight Associate at Swiss Re, 2024 to 2026.
- Corporate Credit Support at UniCredit Bank Czech Republic and Slovakia, 2024.
- Master's in Financial Markets and Investments and Bachelor's in Finance, Banking and Investments, Bratislava University of Economics and Business.