Senior Front-End Engineer - Crypto/Web3 ( Paris)

bondex app; Paris; Sur place; EUR 50 000 - 70 000; Plein temps

Résumé du poste

A leading blockchain technology company in France is seeking an experienced Front-End Developer to join their Web Front-End team. You will focus on technologies like React and TypeScript while enhancing user experiences in crypto solutions. Ideal candidates have at least 5 years of experience in front-end development, strong knowledge of blockchain technologies, and excellent collaboration skills. This role offers an opportunity to contribute to cutting-edge decentralized applications.

Responsabilités

• Be part of Web Front-End team overseeing Web UIs.
• Maintain and improve existing applications for millions of users.
• Integrate Web2 and Web3 technologies and APIs.
• Implement client-side signing for secure user experiences.
• Collaborate with designers, Back-End engineers, and stakeholders.
• Share knowledge and ensure task distribution among team members.
• Advocate for code quality, best practices, and drive technical discussions.

Connaissances

Front-End technologies expertise

React

TypeScript

Blockchain technologies

Web3 development

Client-side signing

Crypto transactions

Web3 libraries (web3.js, ethers.js)

Decentralized applications (dApps)

Excellent communication skills

Outils

Next.js

Browser extension development

Description du poste

Candidate requirements

These are the minimum requirements a candidate must meet to be considered for this role.

• At least 5 years of experience working with Front-End technologies, with a focus on React and TypeScript
• Ability to architect secure, maintainable, and testable Front-End code
• Experience with blockchain technologies, cryptocurrencies, and Web3 development
• Proficient in client-side signing and handling crypto transactions (e.g., Bitcoin, Ethereum)
• Familiarity with Web3 libraries (such as web3.js, ethers.js) and wallet integrations
• Experience with decentralized applications (dApps) and understanding of blockchain protocols
• Ability to independently manage the full lifecycle of tasks, and take ownership of the quality of your work
• You have excellent communication skills and collaborate effectively with team members across disciplines
• Hands-on experience with automated testing is a plus
• Knowledge of Next.js is a plus
• Knowledge of browser extension development is a plus

Job responsibilities

• You will be a part of Web Front-End team which oversees all Web UIs for consumer side of the business such as Wallet, DEX and crypto on-ramp
• Maintain and continuously improve existing applications serving millions of users, as well as develop new ones for cutting-edge crypto solutions
• Integrate both Web2 and Web3 technologies and APIs to enhance wallet and decentralized exchange (DEX) functionalities
• Implement client-side signing and crypto transactions to ensure secure and seamless user experiences
• Collaborate closely with designers, Back-End engineers, and business stakeholders to deliver a best-in-class user experience
• Proactively collaborate with team members, sharing knowledge and ensuring efficient task distribution
• Advocate for best practices, code quality, and test coverage, while driving technical discussions within the team