Web3 React Jobs in France

About Mangrove

Mangrove is an order book DEX allowing liquidity providers to attach smart contracts to their offers. Linking arbitrary code with on-chain trading unlocks a new design space for DeFi. We are backed by some of the best investors in the ecosystem and as a team, we value expertise, creativity, autonomy, and knowledge sharing.

🐒 Mangrove is looking to hire a senior Frontend/Blockchain Developer. This is a full-time position in Paris, however, remote can be an option.

What you’ll do

As a Frontend Developer at Mangrove, you will play a crucial role in building and optimizing the user interface for our decentralized exchange (DEX). You will be responsible for crafting seamless, intuitive, and high-performance experiences that enhance the usability and functionality of our platform.

We are looking for someone who can bridge design and development, with a strong understanding of DeFi, DEXs and advanced trading interfaces. They may also occasionally work on other aspects of the project if needed.

Requirements:

• Extensive experience in React, and modern frontend frameworks
• Strong experience building complex Web3 applications and interacting with smart contracts
• Deep understanding of DEX mechanics, perpetual trading, and DeFi protocols
• Experience in optimizing UI/UX for performance and accessibility
• Familiarity with blockchain infrastructure and EVM interactions
• Experience operating a live protocol/product
• Able to work within the CET (Central European Time) timezone for team meetings
• Excellent verbal and written communication in English

Bonus points:

• Experience with backend integrations and full-stack development
• Passion for DeFi, trading, and Web3 innovation
• Have teamwork, communication and organizational skills
• Willingness to constantly learn & improve, challenging yourself to stay at the top of your game

What does Mangrove offer?

• Significant ownership and autonomy in shaping our frontend and user experience
• Competitive annual salary + tokens
• Flexible schedule and remote-friendly environment
• The opportunity to work with a highly experienced and diverse team
• Team retreats held several times a year around the world
• Conferences and continuous learning opportunities
• Career growth and professional development within a cutting-edge DeFi project

Want to apply?

Fast & efficient hiring process :

1. Apply – Send us any project you’re proud of (GitHub, portfolio, CV, etc.)
2. Intro call – 20-min chat to discuss your experience & fit.
3. Technical test – A hands-on challenge tailored to frontend Web3 development.
4. Test review & final interview – Meet the team and dive deeper.
5. Offer & welcome to the team!

📩 Send your application to

Links

• Website
• Documentation
• Twitter
• LinkedIn
• GitHub

Equal Opportunity

Mangrove is committed to fostering a diverse and inclusive work environment. We encourage all types of profiles to apply and do not discriminate on the basis of race, national origin, religion, gender, sexual orientation, marital status, disability, social origin, or age.