Queryna
SaaSA clearer view of your marketing. Connect analytics, search, tracking, and ads to find what changed, what broke, and what to fix next.
queryna.comSoftware engineer.
Always building.
Hi, I’m Okan. I turn the things I’m curious about into useful products — from software for other builders to a guide for starting over in Spain.
Explore my projects
Based in Madrid, Spain
Things I’m building
Different ideas. The same itch to make something useful.
Sidefold
Creator toolsTurn your knowledge and creative work into digital products. Publish guides, ebooks, photo stories, and downloads from your own storefront.
sidefold.coSpain Nomad Book
Independent guideThe guide I wish I’d had when moving to Spain. My experience with the Digital Nomad Visa, organized into practical steps, examples, and templates.
spainnomadbook.comPower Window
Web appFind the cheapest time to use electricity in Spain. Plan appliance use and EV charging around hourly prices from Red Eléctrica.
powerwindow.energyAnd a few things with the source open.
Smaller tools, experiments, and work in Go.
A little
about me.
Türkiye → MadridI like understanding how things work.
Then making them work a little better.
I’m a software engineer from Türkiye, now living in Madrid. My background is in backend development, including work at FairMoney. Alongside that work, I build products around problems I run into myself.
I moved to Spain in January 2025 and handled my own Digital Nomad Visa application. Turning that experience into Spain Nomad Book is a good example of how these projects begin: something is harder to figure out than it should be, so I try to make it clearer.
Outside software, I’m usually reading, running, or cycling. If you’re in Madrid, you might find me around Parque del Oeste.
More about my background on LinkedInSomething on your mind?
A project, a question, or just a hello. I’d love to hear it.