Freelancer profile translated to English.

Description

Full Stack Developer with 7 years of experience on critical systems, SaaS products, and serverless platforms.

Specialized in SvelteKit, React, and Node.js. Top 20 of promotion at École 42. Currently CTO co-founder of Zonor, a live music event management platform in France.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Clermont-Ferrand (up to 10km), Issoire (up to 20km)

ITSF
Full Stack Developer
TELECOMMUNICATIONS
July 2015 - August 2018 (3 years and 1 month)
Lyon, France
• • Founding member of a tech expert group created by Xavier Niel — sole client: Salt Telecom (Switzerland)
• • Delivered 2 projects with high legal and security constraints: number portability between Swiss operators and Legal Interception
• • Design and implementation of critical REST APIs consumed in production 24/7 by a national operator
Stack: JavaEE, Hibernate, React, MariaDB, REST APIs
Java React.js MariaDB JavaScript Hibernate
Viaco
Senior / Lead Full Stack Developer
CIVIL ENGINEERING
December 2018 - December 2019 (1 year)
Lyon, France
• • Architected and developed a construction platform from scratch: subcontractor management and digital construction site board
• • Full serverless deployment (AWS Lambda, KeyCloak, ElasticSearch) — from technical choice to production launch
• • Mentored a junior developer for complete autonomy on the entire project
Stack: NodeJS, AWS Lambda, KeyCloak, PostgreSQL, ElasticSearch, React
Node.js AWS Lambda PostgreSQL React.js Elasticsearch
Zonor
CTO & Co-founder
CULTURE
January 2024 - May 2026 (2 years and 4 months)
Clermont-Ferrand, France
• • Co-founded and architected a SaaS platform for live music event management in France, from scratch
• • Complete technical leadership: infrastructure choices, product roadmap, feature-by-feature development
• • Modern end-to-end stack: SvelteKit, Supabase / PostgreSQL, Drizzle ORM, deployment
Svelte PostgreSQL Typescript TailwindCSS Supabase

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Bachelor of Computer Science
École 42
Bachelor of Computer Science
Master 2 Aging Biology
Université Paris Diderot
Master 2 Biologie du Vieillissement

Stelio Buono

Confirmed Full Stack Developer

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