Guillaume Dumas

Full-stack developer, frontend leaning · Grenoble, France · Open to remote work

"As long as i'm alive, there is infinite chances" - Monkey D. Luffy

About me

I'm a full-stack developer who leans frontend. I work mainly with React, Next.js and TypeScript, and I'm comfortable following a feature through APIs, backend logic and PostgreSQL.

My recent work has focused on trading and prediction-market interfaces: live data, charts, payment flows, wallet interactions and responsive product states. I completed the 42 Lyon Common Core after a first career in high-end leatherwork.

I'm currently looking for a full-time role in Grenoble or with a remote team.

Portfolio · CV · LinkedIn

Professional experience

Company	Role	Work
Jupiter	Frontend Consultant	Jupiter Predict: activity, discovery and leaderboard screens, chart behaviour, payment UI and responsive states
Adrena	Frontend Intern	Adrena: roughly 30 merged PRs across trading UI, Jupiter swaps, staking, mobile fixes and API work
Versus	Founder & Developer	Built and tested a real-time betting product
42 Lyon	Common Core Graduate	C, C++, Unix, networking, graphics, Docker and TypeScript projects
Magicake	Founder	Product, operations and community
Doge Capital	Board Member	Community and strategy

Featured projects

Jupiter Predict Frontend work on a live prediction-market product inside a large React and TypeScript codebase. Stack: TypeScript, React, Tailwind CSS, Solana, charts	Adrena Trading UI, token selection, staking and ALP screens, Jupiter swaps, campaign interfaces and mobile fixes. Stack: TypeScript, React, Tailwind CSS, Web3.js, APIs
Portfolio and Demo Lab Interactive market charts, protocol data, wallet flows and other small product demos built to show the work rather than describe it. Stack: Next.js, React, TypeScript, GSAP, Three.js	ft_transcendence A multiplayer Pong platform with tournaments, chat and a TypeScript single-page application. Stack: TypeScript, Node.js, WebSockets, Docker

Main tools

TypeScript React Next.js Tailwind CSS Node.js Fastify PostgreSQL REST APIs WebSockets Docker Solana Web3.js C C++

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Let's connect

For frontend, product or full-stack roles: