Hi, I'm Alex. I build digital things — and collect mechanical ones.
est 1983 _ digital 1998 _ studio 2012
»Alexander impresses with above-average creativity and a deep understanding of products, processes and design. Innovative, structured and always with a strategic vision.«
— Peter Richarz, CEO of Dieter von Holtzbrinck Ventures
Building digital products by day, browsing Chrono24 by night.Alexander Kaiser and his team build digital products that are used by millions of people in Germany, for companies such as Worldline, HomeToGo, Wüstenrot, Volks- und Raiffeisenbanken, Burda and UNICEF.Together successful from day one: Since founding pooliestudios in 2012, one of the very first clients was the team behind MeinPraktikum.de. Together with the Embrace Group (Bertelsmann Investments), we’ve since helped build innovative platforms for digital recruiting — including today’s market leaders like Ausbildung.de, MeinPraktikum.de and trainee.de.In June 2022, pooliestudios became part of the publicplan group, an IT service provider for the digitalisation of public administration with a focus on open source-based software solutions.Before founding pooliestudios, Alexander worked for six years as an art director and product designer at Media Ventures GmbH, a venture capital company owned by Ströer. There he was involved in projects such as NEU.de, Weg.de and PKW.de.According to Handelsblatt, Alexander is one of the leading digital product designers and user interface experts in Germany.Where the nickname »poolie« comes from remains a secret 🤫
pooliestudios sold in 2022
Digital agency with offices in Cologne & Berlin.Nona / Nona Answers
Nona.de is a privacy-focused and ad-free search engine from Germany.kaliber.club
The exclusive watch club.
Without Etepetete.Daminik
A simple and scalable open source digital asset manager.

⏱️ Watches
A healthy obsession hobby

💳 kaliber.club:
The exclusive watch club. Without Etepetete.
Founded in May 2023 with the idea of offering a digital platform—alongside physical meetups and collaborations with brands and manufacturers—that provides a safe space for exchange, away from Instagram and similar platforms.Our members come from all walks of life, united by one common denominator: a passion for watchmaking.kaliber.club
🎥 MB Watches:
At the beginning of 2024, I sat down with Konstantin to talk about part of my watch collection. (In german)
🎥 Part II, a year later:
🎧 UhrTalk:
In episode 198 of the UhrTalk podcast, I talked with Raf about how i got into watches, what makes Chopard special and why the kaliber.club exists. (Also in german)