Leon Sandner
YouTube Creator
Content Feed
the reality of building a software startup with AI (tools, stack & lessons)
September 9, 2025
here's what building a SaaS with AI actually looks like from scratch. in this episode, I show you the real tools and tech stack I use to build my startup, what vibe coding means in practice, and the conversation that changed how I think about building. the biggest lesson isn't about the tech. connect with me as I build this startup in public: https://www.leonsandner.com/ instagram: https://www.instagram.com/leonsview/ linkedin: https://www.linkedin.com/in/leon-sandner/ // RESSOURCES apply for the publyc pilot program: https://www.publyc.app/pilot-program // CHAPTERS 0:00 intro 1:08 what happened since Taiwan 2:21 a new chapter 2:48 what is the sandbox? 4:16 empty space tour 4:54 how I got started with building 7:28 the importance of context engineering 8:43 impressions of my new life 9:20 deep dive into my AI coding tech stack 13:10 don't forget about grants 15:09 what's way more important than building 18:14 my vision with publyc 20:43 demo of what I've built 23:27 publyc pilot program 24:29 the 3 main takeaways in a nutshell Subscribe to follow the journey from the beginning :) #entrepreneur #entrepreneurship #business #businessvlog #buildinpublic #ai #vibecoding #saas #indiehacker