Justyna

I'm a solo Rails 8 developer shipping 6+ products with AI agents

I'm a solo Rails 8 developer shipping 6+ products with AI agents

I'm Justyna, a Rails developer from Poznań, Poland. Over the past months I've shipped multiple production apps — all solo, all Rails 8, all with AI-assisted development (Claude Code + OpenAI).

CramZap
Upload a PDF, get an interactive quiz powered by AI. Preview and edit questions, track your score, share with a link. Built for students, language learners, and professionals prepping for certifications. No account needed to try.
Launched
SnipeSale
Deal aggregator that scans 98+ indie shops daily for promotions. Users submit their favorite niche retailers, follow them, and get email alerts when new deals drop. 17,000+ active deals, completely free.
Launched

Recent activity

Stop Spamming Reddit for MRR. It’s Killing Your Brand (You need Claude Code for BuildInPublic instead)

Stop Spamming Reddit for MRR. It’s Killing Your Brand (You need Claude Code for BuildInPublic instead)

Stop Spamming Reddit for MRR. It’s Killing Your Brand (You need Claude Code for BuildInPublic instead)

Tip: Build open-source software to grow your audience and your revenue