Pablo Fernández Ruiz

Software Developer

I'm a software developer focused on developer tools and data systems. I care about performance, design, and building products that feel solid and intentional, from backend to the final user experience.

I'm currently working on different projects with a range of clients, and I have a keen interest in web scraping.

You can find my code on GitHub, reach me on @pablofdrz, or write me to email. Always open to conversations about engineering and thoughtful product building.

Selected Projects

whatswebA browserless WhatsApp Web SDK for Node.js, built on the native Multi-Device protocol.

microvmRun untrusted code — Go, Python, TypeScript, Rust — in Firecracker microVMs on your own hardware. Written entirely in Go.

WOCWOC (Wake On Call) for Docker apps behind Traefik: idle containers are stopped, and the first request starts them again in about a quarter of a second.

skew-routerSkew protection for self-hosted Next.js on Kubernetes: every open browser tab keeps talking to the build that served it, across deploys and rollbacks.

pixel-mascotProcedural pixel-art mascots for the web, in the style of the old Office assistants: no sprites, every frame computed from distance functions. Eleven characters, 23 gestures and 28 accessories.

Selected Projects

Recent Thoughts

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Redesigning Secondbook to Sell More10/28/2026

Secondbook's redesign went live today. Every change, from the deal cards to a logo that knows the date, has one job: selling more bookings.

DesignDesign SystemsMarketplacesConversionAnimation

A Website That Does Its Own SEO10/25/2026

Google says to review every AI-written page by hand. I'm building a loop that won't: it reads my analytics, edits my sites and measures what worked.

SEOAI AgentsAnalyticsAutomationSearch Console

Five Analytics Tools, One Report10/25/2026

Same site, same 28 days: 229 visitors, 30,121 visits, 7 clicks. How one command joins five analytics tools into a weekly report, critical first.

AnalyticsSEOGoSelf-hostingGoogle APIs