I'm Rubén Sospedra, a full-stack engineer from Barcelona. I graduated in Political Science, then took a radical turn: a remote software internship. Computers and automation hooked me as a kid and never let go. For the past 13 years I have helped companies grow their products.
I co-founded a remote startup as CTO, owned developer experience for a 40-engineer org, and now set technical direction as a principal engineer. I stay close to the code: open source, conferences, teaching, writing. AI is a multiplier in my toolkit, not a crutch. The whole journey settled into one principle: know when to move fast and when to get it right. It's the skill behind every other skill.
Want more? Let's chat, read my user-guide manual, or sneak on what I use to work.
HighlightedExperience
Only the highlights. I worked at many companies over the years and never sat idle for more than a couple of months.Principal engineer
Digg, Jul 2025 ▸ present
Set technical direction across mobile, web, and backend for a team of 8. Led the mobile platform from concept to release: a cross-platform app with 4.8+ store ratings. Built an AI knowledge system and cut onboarding time by 60%.
Experience
Staff engineer & head of clients
Cameo, Oct 2019 ▸ Jul 2025
Led DX and client devops for 40 engineers: deploys went from under 12 a week to multiple daily. Led the iOS quality overhaul to a WWDC showcase: crash rate down from 2.1% to 0.3%, App Store rating up from 3.8 to 4.7.
Experience
Lead software engineer
FreeNOW, Mar 2018 ▸ Oct 2019
Engineered the internal tools behind 10x user growth across 9 markets. Architected a new driver registration flow: half the overhead, 5x the retention. Delivered regulation-compliant apps across complex legal standards.
Experience
Co-founder & CTO
Huballin, Dec 2013 ▸ Jan 2016
Built a B2B company from zero to $500k EBITDA. Hired and led the engineering team, set the technical culture, made every architectural decision. Balanced speed with quality under tight market constraints.