Krasimir

@krasimir.bsky.social

Senior engineer. Book author. Speaker. Serial SaaS builder.

Posting this to mark the day I wrote my first skill. Not gonna lie. It’s fun. And honestly a bit mind-blowing. Natural language is becoming part of everything. The clearer you express your thinking, the better the software behaves. New advice for 2026: read more books and expand your vocabulary. 📚

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Just recently I wanted to write a script that uploads a directory to S3. I decided to use Copilot. It's my attempt to prove two things: (a) that AI can't (still) replace me as a senior software engineer and (b) that it still makes sense to learn programming. krasimirtsonev.com/blog/article...

Nice try dear AI. Now let's talk about production.

Nice try dear AI. Now let's talk about production. / Just recently I wanted to write a script that uploads a directory to S3. I decided to use Copilot. I have been using it for a while. This article i...

krasimirtsonev.com

🤦 Remember that quote from Brian Kernighan: "Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it."

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Let’s be real, friends — most days we just… write code (or stare at it until it fixes itself) 🙂 P.S. And yes, of course I generated the version on the right with my personal AI assistant. It knows me a little too well, doesn’t it? 😄

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🏁 Wrapped up my final workshop of the year - the grand finale of “Krasimir talks about SSR until someone stops him.” See you in 2026 — and yes, you can hire me to bring this workshop to your event. 🚀

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JavaScript has its 30th birthday today! 🎂 I'm attaching a function that calculate its age 😂. In its lifetime it has given us: - Pop-up ads 👀 - jQuery magic ✨ - Callbacks 😵 - Promises 🙂 - async/await 😍 - ... and React hydration errors 🤬 What a journey. Happy 30th Birthday, you chaotic legend!

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🚀 Had a blast at #JSTalks2025! MC-ing, a talk, an AI panel, and tons of great JavaScript vibes. Huge thanks to Mihail Mateev, Piya Khongcharoen & team for the flawless event. Saw old friends, made new ones — can’t wait for next year! 🙌

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🚀🤩 I'll be leading a free online workshop on 4th of December as part of React Advanced Conference. We'll be exploring server-side rendering. Don’t miss out – grab your conference ticket to attend here reactadvanced.com P.S. By the way, you could attend remotely!

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🚀🎊 Hey, world. I'm starting the week with a huge announcement. I'm turning a new page in my career. I'm now a proffesional "vibe code restoration specialist". I'm here now to read, understand and fix the code that AI generates. Wish me luck🤞.

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Spent the weekend testing React Server Components support across popular frameworks 👉 rsc.krasimirtsonev.com Results: ✅ Next.js, Vite, Waku (100%) ⚠️ Forket, Parcel, ReactRouter, RedwoodSDK (83%) Tests: rsc.krasimirtsonev.com#testcases Know another RSC-ready lib? Ping me! #ReactJS #javascript

React Server Components support

Can I use React Server Components (RSCs) today. A project that shows the support of RSCs across the frameworks and libraries.

rsc.krasimirtsonev.com