Leonardo Donelli
Senior Software Engineer at Fresha
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolLeonardo Donelli is a Senior Software Engineer based in London with 13 years of experience building distributed, microservice-based web platforms and a strong preference for functional languages like Elixir. He has led technical launches and hiring for international expansions—scaling a UK subsidiary from a team of 4 to over 80 while helping deliver an MVP that sold 10,000+ policies in its first year. Comfortable across back-end and front-end stacks (Elixir, Python, TypeScript, React/Angular/Vue/Elm), he pairs pragmatic engineering with clear documentation and improved development practices. More recently he’s been applying AI and NLP techniques—RAG and LLM function-calling—to production chat platforms. An active open-source maintainer, he’s tackled nontrivial migrations and build-system overhauls (e.g., Strophe.js from Webpack to Rollup), reflecting both attention to detail and system-level thinking.
13 years of coding experience
10 years of employment as a software developer
University of Milan
English, Italian
Stackoverflow
2,866reputation
270kreached
74answers
8questions
python
top-5%
Github Skills (16)
xmpp10
localization10
javascript10
rollupjs10
odo10
python10
odoo10
babel-core9
nodejs9
babeljs9
html8
testing7
fibonacci6
shell6
android6
Programming languages (16)
Github contributions (5)
strophe/strophejs
Mar 2019 - Jul 2019
Strophe.js is an XMPP library for JavaScript
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:18 commits, 5 PRs, 23 comments in 3 months
Contributions summary:Leonardo primarily focused on migrating the project from Webpack to Rollup, a significant change in the build process, demonstrating proficiency in JavaScript build tools. They addressed dependencies, configuration, and build outputs. The user also updated the test setup and fixed indentation and other minor issues, indicating attention to detail and maintenance skills. Furthermore, they updated dependencies to support different JavaScript environments.
xmpp-libraryjavascriptxmppnodejs
OCA/l10n-italy
Jul 2014 - Dec 2015
Odoo Italian localization
Role in this project:Back-end Developer
Back-end DeveloperContributions:34 commits, 4 PRs, 14 comments in 1 year 5 months
Contributions summary:Leonardo primarily focused on enhancing the Italian localization module for Odoo. Their contributions included adding import guards to prevent initialization errors when external dependencies were missing and logging import errors for improved debugging. They also modified code, ensuring consistent quote usage, utilizing the new API, and making improvements to the FatturaPA module. The commits suggest a strong familiarity with the Odoo framework and its integration with external libraries.
pythonodooitalianerplocalization
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