Mariusz Kozieł - Wizards and Kings

This special episode was recorded from the Buzzsprout podcast booth on Day 1 of Rails World 2025 in Amsterdam. Our guest, Mariusz Kozieł, is the CEO of Visuality, a Ruby on Rails agency based in Poland. We chat about Mariusz' career progression from developer, to engineering manager, to CTO, and now CEO. We also talk about his and Visuality's efforts to foster technical community with the Ruby Community Conference and Ruby Europe.

Thank you to Buzzsprout for sponsoring the Rails World Podcast program, and for providing us the opportunity to attend and record! 🙏

Related Links

Mariusz on Twitter
Mariusz on LinkedIn

Visuality website
Visuality on Twitter
Visuality on LinkedIn

Ruby Europe website
Ruby Europe on Twitter

Ruby Community Conference

Creators and Guests

Jeremy Smith
Host
Jeremy Smith
Designer & Rails dev • Co-organizing: https://t.co/q8XwVUrgxU • Studio: https://t.co/ZrmGeEnhcI • Side project: https://t.co/X0kD85uiQf • Newsletter: https://t.co/IaoJVazkkr
Jess Brown
Host
Jess Brown
Indie rails dev since 08, currently building CSePub & TRACT. Co-host https://t.co/TpDORNDqZV. Family of 4, also interested in faith, crossfit, cycling, RV'ing, finance
Mariusz Kozieł
Guest
Mariusz Kozieł
CEO (ex-CTO) at Visuality, Founder of Ruby Europe and Ruby Community Conference
Mariusz Kozieł - Wizards and Kings
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