19 years building software, now making invoicing stupidly simple
I wrote my first line of code at 9 (Pascal), started freelancing at 16, and entered AI in 2015 with TensorFlow. Today I lead AI Engineering at Atlax 360, building enterprise AI systems for fintech.
My career has taken me through BBVA, Santander, Bankinter, El Corte Inglés, and Decathlon — leading teams of 20+ engineers and architecting systems that handle millions of users. I've seen enterprise software at its best (scalability) and worst (complexity).
Quidbill exists because invoicing shouldn't require an accounting degree. After 19 years of building complex systems, I wanted to create something radically simple: professional invoices in 30 seconds.
I built Quidbill for developers, designers, and freelancers who value their time. Because the best software is the one that gets out of your way.
"I built Quidbill because I was tired of spending more time on invoicing than on actual work. Now I spend 30 seconds per invoice instead of 30 minutes."— Petru Arakiss
Started programming with Pascal — the beginning of a lifelong obsession
Started working with TensorFlow, diving deep into machine learning
Led teams of 20+ engineers at major European banks
Leading AI systems development for fintech at Atlax 360
Started building the radically simple invoicing tool
Join thousands of freelancers who've switched to faster, simpler invoicing.