Freelancer profile translated to English.
Back to original languageAbout Gwendal
I specialize in the fullstack development of web applications, using React and Next.js with TypeScript.
I primarily work on very early-stage projects (idea, prototype, MVP) to quickly transform a vision into a functional product, testable by real users.
My areas of expertise include:
- Development of Artificial Intelligence Applications: I design AI tools tailored to your company's specific needs to automate tasks and refine decision-making.
- Development of SaaS Platforms: I build cloud-based platforms designed to scale and adapt to your company's growth.
- MVP Design: Creation of Minimum Viable Products that allow you to validate your ideas and gather user feedback.
Technologies I love to work with:
Frontend:
- React.js + Next.js
- TailwindCSS
- Libraries:
-- react-query (data fetching, synchronization, and caching)
-- zustand (state management)
-- react-hook-form (form validation)
-- zod (schema validation with a TypeScript approach)
-- radix-ui (unstyled accessible component primitives)
Backend:
- PostgreSQL (relational database)
- Vector database (for semantic search)
- Prisma (ORM)
- BullMQ (job and message queue for Node.js)
- tRPC (end-to-end typesafe API for TypeScript projects)
Artificial Intelligence:
- LLMs (GPT, LLaMA, etc.) → chatbots, AI assistants, text generation and analysis
- Real-time audio → interactive voice assistants
- Image generation → AI-powered image creation and understanding
- Semantic search & RAG → document chat, intelligent search engines
Storage:
- Cloudflare R2
- AWS S3
Payment:
- Stripe
- Paddle
- LemonSqueezy
Others:
- Turborepo
- TypeScript
French
Native or bilingual
English
Native or bilingual
Can work on-site
Annecy (up to 50km), Lyon (up to 10km)
Experience
- Presti - (Y Combinator 2024)Fullstack · React · Next.js · Typescript · Python · Artificial IntelligenceSOFTWARE PUBLISHINGMarch 2024 - Today (2 years and 2 months)Paris, FranceDevelopment of the Presti web application, a SaaS solution specializing in the creation of AI-generated product photos. Presti transforms simple product images into studio-quality visuals, reducing production costs and time while increasing online sales conversion rates.Frontend:- React.js + Next.js- Shadcn/ui- TailwindCSSBackend:- Supabase (open-source alternative to Firebase)- PostgreSQL (relational database)- BullMQ (job and message queue for Node.js)- tRPC (end-to-end typesafe API for TypeScript projects)- Python (image transformation before processing in AI models)Storage:- Supabase storagePayment:- StripeOthers:- TypeScript
- TenderCrunchFullstack · React · Next.js · Typescript · Artificial IntelligenceSOFTWARE PUBLISHINGJuly 2023 - December 2024 (1 year and 5 months)Lille, FranceDevelopment and deployment of TenderCrunch, a SaaS solution to accelerate RFP, RFI, and security questionnaire responses through an enriched knowledge base and AI.Frontend:- React.js + Next.js- TailwindCSSBackend:- PostgreSQL (relational database)- Vector database (for semantic search)- Prisma (ORM)- BullMQ (job and message queue for Node.js)- tRPC (end-to-end typesafe API for TypeScript projects)Artificial Intelligence:- OpenAI GPT-4 model- OpenAI ADA-002 model (vector embeddings for semantic search)Storage:- AWS S3Payment:- StripeOthers:- Turborepo (monorepo management tool)- TypeScript
- PaletteBrainFullstack · React · Electron · TypescriptSOFTWARE PUBLISHINGApril 2023 - Today (3 years and 2 months)Annecy, FranceDevelopment of PaletteBrain, a cross-platform desktop application built with Electron. PaletteBrain integrates ChatGPT functionalities into any application via a customizable keyboard shortcut. This application allows users to create specific task templates and assign dedicated shortcuts, optimizing daily efficiency and productivity.Tech Stack:- Electron- React.js- TailwindCSS- Vite- tRPC (end-to-end typesafe API for TypeScript projects)- Electron Store- OpenAI / Azure OpenAI- LemonSqueezy (license management)Others:- Turborepo (monorepo management tool)- TypeScript
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Education
- Master in MIAGE (Information Technology Methods Applied to Business Management)University of Bordeaux2018
- Bachelor's in MIAGE (Information Technology Methods Applied to Business Management)University of Bordeaux2016