Freelancer profile translated to English.
Back to original languageAbout Théo
Fullstack software engineer in my 5th year at Epitech, after a year of academic exchange in Brazil. 5 years of development experience, 18 months of cumulative professional experience (3 internships: startup, scale-up, agency), several projects delivered to production.
My comfort zone is modern fullstack web development: Svelte/SvelteKit on the front-end, NestJS and Fastify on the back-end, TypeScript everywhere. But what I really enjoy is working across the entire stack — from low-level backend (Go, C, C++) to Kubernetes orchestration. I work best when I can see the whole system, from code to production.
Some notable experiences:
- At Juwa (fintech scale-up), I went from backend intern to head of development in 6 months. Redesigned the student dashboard in React, integrated AI automations (OpenAI), optimized Azure CI/CD (build time reduced from 15 min to 1 min).
- Pinea (pinea.be), my own brand of mousepads: fully developed e-commerce site solo with a real-time 3D configurator, Stripe payment, complete backoffice. Development, design, Blender 3D modeling — all done by hand.
- Vignoble du Haut Escaut: full website for a client (Svelte + Nest), with custom ticketing (QR codes, offline validation) used at an event with 500+ attendees.
- Netscope: multi-threaded Go agent for network scanning, orchestrated on Kubernetes with Grafana monitoring.
I speak French, English, and Portuguese, I work well in multicultural teams, and I am comfortable both working directly with clients and within a structured tech team (Agile, PRs, code reviews).
Available for contracting 2 days a week or more, remotely starting now, or on-site in Paris from July. Also open to well-defined one-off projects.
To discuss a mission: simply send me a message, I'll respond within 24 hours.
Portfolio
English
Native or bilingual
Portuguese
Conversational
French
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- JuwaHead of DevelopmentTECHJanuary 2025 - June 2025 (5 months)Lille, FrancePlatform connecting freelance students with companies, with a fund escrow system via Lemonway. Initially hired as a NestJS backend intern, I was promoted to Head of Development after a few weeks. I managed a team of front-end and back-end developers, organized sprints on Notion, supervised code reviews and deployments. I also led the complete redesign of the student dashboard (reconstruction of backend routes + React front-end adaptation), developed an AI automation system via the OpenAI API to automatically pre-select student profiles (reducing manual time from 4 hours to instant generation), and refactored the Azure CI/CD (optimized build from 15 minutes to 1 minute).Technologies: NestJS, Node.js, TypeScript, PostgreSQL, Prisma, React, Supabase, Azure, OpenAI API, Lemonway, Swagger, Notion
- PineaFounder & Fullstack DeveloperTECHJune 2025 - Today (1 year and 2 months)Lille, FranceCreation of a brand of customizable mousepads with a complete e-commerce site developed from scratch solo. Site with Svelte 5 front-end, NestJS + Fastify backoffice, real-time 3D configurator (3D model created on Blender, rendered with Threlte), customization system (size, thickness, image import, interactive 2D and 3D previews), Stripe payment integration, complete administrative panel (order management, automatic emailing, parcel shipping service API integration). Full design done with a collaborator.URL:Technologies: Svelte 5, SvelteKit, TypeScript, Tailwind CSS, NestJS, Fastify, Firebase, Threlte, Three.js, Blender, Stripe
- Vignoble du Haut EscautFreelance Fullstack Developer - Direct ClientTECHJune 2024 - Today (2 years and 2 months)Cambrai, FranceDevelopment of a complete website for a winemaker, in direct relation with the client. Dynamic product pages with a vintage system (switch between vintages by year while keeping previous ones), event calendar with online registration and administration panel, reservation system for an annual event with Stripe payment. Complete development of custom ticketing: QR code generation, offline validation, scanning panel. Ticketing used in production at an event with 500+ attendees. Page design done autonomously after on-site visits to understand client needs.Technologies: Svelte, SvelteKit, NestJS, TypeScript, Firebase, Stripe, QR codes
Recommendations
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Information Technology Expert DegreeEpitech Lille2027Diplôme d'Expert en technologie de l'information
- Baccalauréat série générale2022Baccalauréat série générale