Guillermo De Fermín
Staff Software Engineer at Taxfix
Madrid, Community of Madrid, Spain
Summary
👤
Senior🎓
Top SchoolGuillermo De Fermín is a Staff Software Engineer based in Madrid with 11 years of experience building reliable systems across research, startup and corporate environments. Currently at Taxfix, he combines deep practical skills in Typescript, Python and C++ with systems administration expertise on Linux and macOS to deliver production-ready software. He has a proven track record as a technical leader and founder, having served as CTO of a startup where he shipped a beta mobile app and hired and mentored engineers. Past work in robotics and aerospace-grade tooling (Aerostack and a cross-brand Porsche project) shows his comfort with low-level systems, AI components, and containerized CI/CD infrastructures. Colleagues describe him as curious and adaptable—he eagerly picks up new languages and tools and enjoys collaborating with diverse teams to solve hard engineering problems.
11 years of coding experience
7 years of employment as a software developer
Bachelor in Computer Science Engineering, Computer Science, Bachelor in Computer Science Engineering, Computer Science at Universidad Politécnica de Madrid
English, Spanish, Italian, German
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (143)
storybook10
ui-components10
testing10
material-ui10
ember10
google-maps10
isolation10
javascript10
react-components10
routers10
wpa10
internationalization10
mui10
localization10
html10
Programming languages (9)
Github contributions (5)
GuilleDF/dotfiles
Mar 2016 - Oct 2019
Contributions:53 pushes, 2 branches in 3 years 7 months
NedTeam/NedCore
Oct 2014 - Sep 2015
Contributions:49 commits, 41 pushes, 7 branches in 10 months
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