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

bondex app; City Of London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading tech platform in London seeks an experienced Front-End Developer to enhance wallet and DEX functionalities. The role involves maintaining existing applications and developing new ones using React and TypeScript, with blockchain technologies and Web3 integrations. Candidates should have strong communication skills and be capable of managing tasks independently, ensuring high-quality work.

Qualifications

• At least 5 years of experience with Front-End technologies, focusing on React and TypeScript.
• Ability to architect secure, maintainable, and testable Front-End code.
• Experience with blockchain technologies and decentralized applications.

Responsibilities

• Be part of the Web Front-End team overseeing consumer web UIs like Wallet and DEX.
• Maintain and improve applications serving millions of users.
• Integrate Web2 and Web3 technologies to enhance functionalities.

Skills

React

TypeScript

Blockchain technologies

Cryptocurrency

Web3 development

Client-side signing

Communication skills

Tools

web3.js

ethers.js

Job description

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

Desirable

• 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