Freelancer profile translated to English.
Back to original languageAbout Jonathan
Senior Full-Stack Developer (6 years) + CTO & co-founder of Datalyse, I support startups, scale-ups, and SMEs on two complementary axes:
• Interactive 3D Web Expert (Three.js / React Three Fiber / WebGL / custom GLSL shaders) — product configurators, immersive experiences, 3D data-viz, digital twins, high-end e-commerce. Top of class at GOBELINS for this specialty.
• Multi-tenant SaaS Technical Lead — Next.js / Nuxt / React Native on the front-end, Django / Node / Supabase / PostgreSQL on the back-end. Architecture from scratch, CI/CD, scalability, GDPR security. 3 years as Lead Dev on Datalumni (SaaS deployed in over 40 universities) then CTO at Datalyse (management platform for local authorities).
What I bring concretely:
- Clean deliverables, tests, documentation, no hidden debt.
- Ability to take a project from 0 to production — scoping, architecture, development, deployment, maintenance.
- Rare hybrid profile: I can both deliver a demanding 3D interface AND set up the SaaS architecture that supports 10k users.
- CTO as a Service role possible for long-term missions (roadmap, tech recruitment, architecture choices).
Available remotely from Pays de Gex (01, France) — 20 mins from Geneva. Occasional on-site interventions possible on the Lyon ↔ French-speaking Switzerland (Geneva, Lausanne, Nyon) axis.
Let's discuss your project — I respond within 24 business hours.
French
Native or bilingual
English
Fluent
Can work on-site
Gex (up to 50km), Genève (up to 50km), Lausanne (up to 50km)
Experience
- DatalyseCTO & Co-founderPUBLIC SECTORSeptember 2024 - Today (1 year and 11 months)Gex, FranceCo-founder and CTO of Datalyse — a management platform for local authorities (dashboards, KPIs, data-viz). The product helps authorities make decisions based on their internal data AND open-source data.My responsibilities:- Technical architecture from scratch: Nuxt 3 (front-end), Django + DRF (back-end), PostgreSQL, Docker, CI/CD GitHub Actions.- Design and implementation of a custom "time intelligence" DSL for backend KPI calculators.- GDPR compliance, security, local authority standards.- Tech lead of a team of 3 (Lili, Thomas + myself), leading the weekly stand-up "Mêlée Hebdo".- Product roadmap, architecture choices, tech recruitment, co-founder relations.Stack: Nuxt 3, Vue 3, TypeScript, Django, DRF, PostgreSQL, Docker, GitHub Actions, Sentry.
- FreelanceFull-Stack DeveloperSeptember 2024 - Today (1 year and 11 months)Gex, FranceFull-stack and 3D web missions for startups, agencies, and SMEs: web/mobile applications, showcase websites, e-commerce, interactive 3D configurators, WebGL immersive experiences.Typical scope: technical scoping, architecture, front-end + back-end development, mobile integration (React Native), CI/CD, deployment, production maintenance. Capable of taking a project from scratch to launch, or joining an existing team.Specialties: Three.js / React Three Fiber / custom GLSL shaders, Next.js / Nuxt 3 / React, Django / Node, Supabase / PostgreSQL, Docker, Vercel.
- DatalumniFull-Stack DeveloperJanuary 2021 - August 2024 (3 years and 7 months)Annecy, FranceDatalumni offers an alumni network management SaaS platform for educational institutions and companies. Front-end and back-end development of the platform, writing technical documentation, maintenance and bug fixes, adding new features, analysis and processing of technical requirements. Technologies: Nuxt, Django, PostgreSQL, Docker.
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Education
- BTS S IO Software Development OptionSt-Michel2017BTS S IO option développement logiciel
- Multi-support Computer Science Development LicenseIUT2022Licence dév informatique multisupport