David Portabella
Freelancer
Lausanne, Vaud, Spain
Summary
👤
Senior🎓
Top SchoolDavid Portabella is a freelance software engineer and PhD in Computer Science from EPFL with 11+ years building AI-driven systems, embedded devices, and data pipelines across startups and enterprise environments. He currently specializes in customizing chatbots and RAG pipelines for private company knowledge, combining hands-on prompt engineering with strong backend skills in Scala, Python and data engineering. His background spans signal processing and embedded firmware for medical devices and drones through to e‑commerce platform design and blockchain-based IP tooling, evidencing a rare full-stack fluency from microcontrollers to cloud services. A collaborative problem-solver who has lived and worked across Europe, Asia and South America, he pairs academic rigor with product-focused execution and is willing to relocate globally for the right opportunity.
11 years of coding experience
21 years of employment as a software developer
Start-up creation, ventureChallenge: Entrepreneurship, Business plan, Financing, Marketing, Start-up creation, ventureChallenge: Entrepreneurship, Business plan, Financing, Marketing at VentureLabPostgraduate School, Computer Science, Postgraduate School, Computer Science at EPFLUPC Universitat Politècnica de Catalunyacoursera
Catalan, Spanish, French, English, Portuguese
Stackoverflow
12,580reputation
1.5mreached
37answers
281questions
Github Skills (200)
jsoup10
document-management10
html10
dom10
text-editing10
css10
sublime10
restful10
playframework10
notebook10
ipython10
xss10
editing10
jupyterlab10
binder10
Programming languages (13)
Github contributions (5)
dportabella/DesktopKeyboard2Android
Oct 2015 - Mar 2021
Contributions:1 release, 1 review, 30 commits in 5 years 5 months
dportabella/spark-examples
May 2016 - Jul 2016
Contributions:11 commits, 4 pushes, 1 branch in 1 month
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