Àlex Fiestas
CTO at Self-employed
Barcelona, Catalonia, Spain
Summary
👤
SeniorÀlex Fiestas is a veteran software leader and CTO with 17 years building startups, cloud services, and Open Source ecosystems from Barcelona. He combines hands-on engineering—spanning distributed systems, embedded, gaming and desktop software—with repeated founder-level experience creating and pivoting SaaS products. His work at EyeOS and Datract showcases expertise in containerized, multi-cloud deployments and production-scale data scraping/ML pipelines, while long-term KDE contributions (including Plasma and KDE Connect) reflect deep OS and UX integration knowledge. As a pragmatic hacker-for-hire and indie game co-founder, he moves comfortably between low-level refinements and product-driven features. He’s notable for pioneering container distribution across continents early on and for translating community-driven open source practices into commercial products.
17 years of coding experience
13 years of employment as a software developer
Github Skills (10)
plasmoid10
c-language10
xcb10
cprogramming-language10
qt10
kde-plasma10
dbus10
file-transfer9
user-interface9
qml7
Programming languages (21)
Github contributions (5)
KDE/kdeconnect-kde
Feb 2014 - May 2017
Multi-platform app that allows your devices to communicate
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:94 commits in 3 years 3 months
Contributions summary:Àlex's contributions primarily involve enhancing the KDE Connect KDE application. They focused on improving the user interface by addressing i18n implementation and adapting coding style. The user also worked on core functionality such as implementing file transfer jobs, adding device name settings, and calculating transfer speeds. Additionally, they addressed bugs related to package handling and integration with other systems.
app-platformwindowscommunicatelinuxandroid
KDE/plasma-desktop
Apr 2014 - Aug 2014
Plasma for the Desktop
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:7 commits in 4 months
Contributions summary:Àlex contributed to the Plasma Desktop environment by removing deprecated Solid interfaces and smart card reader usage. They refactored keyboard configuration code, porting the X11 helper for keyboard layout changes to xcb, and updated the code to use the correct DBUS service name for PlasmaShell. These changes focused on improving system integration, and user experience by addressing dependencies and ensuring proper operation of the keyboard layout OSD.
electronlinuxc-plus-pluschromeosdesktop
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.