Full-Stack Developer Freelance Paris on Site H/F

collectivite

Important information

Contract type:

Freelance

Daily rate:

Salary according to profile

Location:

Paris, France

Starting date:

2 to 4 weeks

Work mode:

Onsite

Published on:

2 June 2026

What they need

is building an AI driven platform that lets traders and researchers design, backtest, and deploy algorithmic trading strategies directly on Web3. Builders sketch strategies in a visual editor or describe them in natural language. We translate ideas into a Strategy DSL, compile to Rust, validate on tick level data, and deploy to decentralized venues (starting with Drift on Solana), all in a wallet first, non custodial flow.

Founded by Bryan Sun (former quant at Jump Trading) and Bryan Hernandez (MIT), based in Paris.

We are looking for a product minded full stack engineer to own the web experience that powers our strategy lifecycle. You will build and maintain the app front end (strategy builder, backtesting dashboards, deployment workflows), contribute to admin tools and internal dashboards, and help evolve our public site and docs. You will integrate wallets and on chain providers, connect to supported DEX venues (beginning with Drift), and ship growth oriented features with a high degree of autonomy in an engineering first culture.

What you will do:

Build and maintain responsive web apps and admin dashboards with TypeScript, React, and Node.js.

Develop intuitive front end interfaces for our decentralized exchange.

Integrate Web3 tools and on chain providers into the platform.

Handle deployments (Vercel) and basic DevOps tasks.

Make autonomous design choices and influence product direction.

Format: freelance mission, full days on site in Paris. Initial mission of 3 to 6 months, with extension based on performance and project needs.

Profile wanted

1. 3 years minimum of full stack experience, sweet spot 5 to 6 years

2. Strong with TypeScript, React, Node.js (Rust a strong plus)

3. Comfortable with databases and deployment platforms like Vercel

4. Startup experience, a dev shop background, or serious side projects valued over big company track record

5. Web3, crypto, or trading affinity preferred

6. Available full days on site in Paris