John Mann
@StartupsAndCode
Ex-Microsoftee, sober coder, veteran, Christian, husband and dog-dad who talks about code, startups, AI and process. 🇺🇸
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Tech Leader: CTO @ Obsess 20+ years building/scaling web/mobile products and teams @ Microsoft, Huge, Consumer Edge Expert in cloud architecture (GCP/AWS) Full-stack dev (React/Python) Improved performance 70%+, cut costs 40%+, Team retention 90%+ Army vet, BS CSCI #Resume #Tech
I rarely repost, I'm not here to spread information if others, only document my own. I love that I use this as a public diary and brainstorm tool. Then grok helps me search it.
Here's a great way to use X. Post when you want to document something for yourself. That's it. If other's read it cool if not cool. Now you have grok to help review your tweets.
Things are getting interesting: My AI twin is live! Ask it anything. companion.napsterai.dev/john-mann-l76r… #Napster #DigitalTwin
Ok, in a weekend, I successfully built a new web application, deployed it, launched on product hunt. Migrated to a new hosting provider, updated SSL cert and all built with AI. Features are now longer the issue. Imagination is. Time to play again!
Today I have 462 followers today. I have a new goal. To meet them in real life. If you follow me and you are ever in NYC. I'll meet you for coffee because real life is always more engaging. I'm hoping to get down to 200 followers and have real connections with them.
Ok. Played with tempo, Replit, V0, kiro, Base44, cursor, Claude code, lovable, bolt, etc... It is crazy how fast I can build something and then forget where it was built. We need an AI tool to track the AI tools. 😂
Interesting take... Your thoughts? github.com/intltechventur…
I officially launched a new product from @StartupsAndCode: PTTrak - A personal trainer management platform. producthunt.com/products/pttra… @tempo_labs for the help on this. 🚀
Building PTTrak in Hours, Not Months: My Journey with Multiple AI Agents open.substack.com/pub/startupsan…
I'm currently on a personal journey. A little fitness, a little code, and a lot of prayer. Let's see what actually works for me. Not saying it'll work for you, but here we go.
Did a fun YouTube live last night. The problems with AI. It gets you 90% but that last 10% will break the first 90%.
Yes, it is 5:30am and I'm excited again about building things. It is not your setup, your tech stack, your experience... it is your passion that creates your future.
I just backed Mystery Puzzles: What you see is NOT what you build on @Kickstarter kickstarter.com/projects/odd-p…
I've been reading so much recently about AI and hallucinations... and how you can code in minutes... AI Prompting is about leadership, not the speed of the result. I wrote a quick post about how to actually prompt and chatbots are NOT agents, stop pretending you are an AI expert…
Midtown felt different on Sept 23. No stage. No slides. Just a velvet-wrapped room where 25 leaders cracked open the truth about AI adoption, what’s working, what’s failing, and what’s coming next. From productivity cliffs to digital twins that attend meetings in your voice, this…
Curious on how I maintain over 90% retention rate for multiple years? Here's a short guide on how I work. open.substack.com/pub/startupsan…
Give yourself space to solve. The best solutions come when you are quiet.
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