I build software for people who own excavators. Enterprise Java by day, B2B SaaS for construction by night. Boring industries, real revenue.

My startups and journey 👉
Joined August 2015
1/ On Aug 17 my site had ~540 daily impressions at an average position of 8. On Aug 18 it had ~5, at position 50. Same pages, same queries, down ~28 spots. Including my own brand name. That was day one of Google's August 2026 spam update.
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I set a 200 PLN monthly budget for Google Places lookups. I burned through it in eight days. Every investment in my database got a phone number pulled up front. Around 300 lookups a day, most of them for records nobody ever opened. Now I only ask when someone clicks.
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GDELT hands me every news article on earth, every 15 minutes. Send all of that to an LLM and you go broke before your first user. A dumb keyword filter kills ~99% of the stream for free. With LLM products the margin lives in the code you write before the API call.
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It’s true that, thanks to AI, I’ve recently built several business applications, which are genuinely useful and actually being used - ten times faster than before. But sometimes I feel sad, because I miss the days when I had to spend two days figuring out an algorithm myself :(.
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Most construction companies discover projects too late. So I built an AI system that scans the internet daily for new investments and potential contracts. It uses my own filtering engine + AI enrichment to surface opportunities early. Yesterday I spoke with several companies. A few already joined the pilot and now receive SMS alerts every day. The interesting part: I genuinely don’t know yet if this will help them win more contracts. But if it works… this probably expands far beyond construction. 👀
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I've finally finished the alpha version of my browser game, Lumina Clash, and you can now play! In the alpha version, I created a desktop-only version. If there's interest, I'll create a dedicated mobile version and release it on Google Play and the App Store. Send me any comments and suggestions!
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Yesterday, I launched a portal with local classifieds for my village and nearby areas. I'm glad that there's already been some activity and people have started posting announcements.
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Iss pro evo 1 na psx i chyba Jerzy Brzęczek w składzie Polski 😂
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Lumina Clash Build Report #8 👉mob waves 👉applying different textures to the surface 👉server- and client-side optimizations
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