Elias Hernandis
Senior Software Engineer at Negative Epsilon SL
Madrid, Community of Madrid, Spain
Summary
👤
Senior🎓
Top SchoolElias Hernandis is a Senior Software Engineer and serial founder with 11 years of experience building production-grade web and payments systems from Madrid. As co-founder and former CTO of Festea, he led design and backend ownership of a cashless payments platform and PWA used across major festivals, handling thousands of orders and integrations with payment providers and CRMs. He pairs strong mathematical training (Mathematics & Computer Engineering) with practical expertise in Python, Django, Docker, PostgreSQL, and cloud deployment patterns, having also run an IT consultancy that supported €2M+/year e-commerce platforms. His background in data engineering and experimentation at Cabify informs a metrics-driven approach to product decisions and scalable ETL pipelines. Now at Factorial, he continues to bridge hands-on backend development with architecture and DevOps discipline. Colleagues describe him as an entrepreneurial engineer who turns ambiguous event-scale requirements into reliable, deployable systems.
11 years of coding experience
2 years of employment as a software developer
Mathematics & Computer Engineering Generalist, Mathematics & Computer Engineering Generalist at Universidad Autónoma de MadridBachelor's degree Mathematics and Computer Science, Bachelor's degree Mathematics and Computer Science at Utrecht UniversityTetuan Valley
Spanish, English
Stackoverflow
1,699reputation
65kreached
8answers
5questions
Github Skills (73)
texlive10
javascript10
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nodejs10
mruby10
react10
markdown9
latexmk9
xetex9
ruby9
css9
packaging9
tex9
pedigree9
Programming languages (10)
Github contributions (5)
knifecake/django-anchor
Jul 2024 - Feb 2025
Attach files to Django models, inspired by Ruby on Rails' Active Storage.
Contributions:3 releases, 16 PRs, 84 pushes in 6 months
attachmentsdjangostorage
knifecake/leapdna-website
Jan 2021 - Nov 2021
The website and API for the leapdna project.
Contributions:17 commits, 12 PRs, 14 pushes in 10 months
forensic-geneticsapistatisticsdna
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