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Full Stack DeFi Web Developer

Re7 Capital

United Kingdom

Remote

USD 130,000 - 150,000

Full time

2 days ago

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Job summary

A leading cryptoasset investment firm in London seeks a motivated Full Stack Web Developer to join their engineering team. You will take charge of developing user-friendly dApps, ensuring integration with smart contracts, and maintaining high security and performance standards. The role offers opportunities for professional growth in a rapidly evolving industry, featuring a remote-first setup.

Benefits

Dynamic and collaborative work environment

Opportunities for professional growth

Remote-first setup with team meetings

Competitive compensation package

Qualifications

5+ years of web development experience, with 3+ years in dApp development.
Proficient in integrating EVM and Non-EVM smart contracts.
Experience deploying applications on AWS.

Responsibilities

Develop and maintain responsive front-end interfaces using frameworks like React.
Integrate EVM and non-EVM smart contracts, ensuring security and data protection.
Collaborate with blockchain engineers and manage CI/CD pipelines.

Skills

JavaScript

TypeScript

PHP

React

Next.js

Docker

AWS

Git

DeFi concepts

Tools

Ethers.js

Web3.js

Node.js

Express

GitHub Actions

CloudFront

About Us

Re7 Capital is a London-based cryptoasset investment firm, leveraging our deep crypto network and proprietary data infrastructure to drive investment decisions across various DeFi and alpha strategies. Through Re7 Labs, we also collaborate with leading projects and blockchains to design DeFi ecosystems, provide on-chain risk curation, and deliver vault management services.

Our team combines expertise in investment management, data science, and crypto. To support our continued growth, we are seeking a motivated Full Stack Web Developer to join our engineering team. Reporting directly to the Head of Technology, you will take full ownership of our dApps, used to interact with our vault smart contracts.

Responsibilities

Develop and maintain responsive, user-friendly front-end interfaces using React, Next.js, Vue or similar frameworks
Integrate EVM and non-EVM smart contracts using libraries like Ethers.js, Web3.js, Viem, Starknet.js and wallet connectors such as ConnectKit and wagmi
Support wallet integrations including MetaMask, Argent X, and Braavos
Design and implement scalable back-end services and APIs using Node.js, Express, and related technologies
Collaborate with blockchain engineers to interact with smart contracts and on-chain data
Implement best practices for security, including wallet connectivity, transaction handling, and protection of user data
Deploy and maintain applications on AWS (EC2, Elastic Beanstalk, S3, CloudFront), with a focus on scalability, logging, and monitoring
Set up and manage CI/CD pipelines using GitHub Actions or similar tools to automate testing and deployment workflows
Deploy applications to decentralized hosting environments (e.g., IPFS, Fleek) as well as cloud-based infrastructure
Ensure performance optimization through CloudFront caching, invalidation strategies, and SSL/TLS management
Contribute to Whisk infrastructure and security, ensuring resilient and secure production deployments
Work closely with designers, PMs, and cross-functional teams to define and deliver new DeFi features and enhancements
Implement and maintain interactive UI elements and animations using modern HTML/CSS (including transitions, keyframes, and responsive styling) within PHP-based web applications

Requirements

Proficiency in JavaScript/TypeScript and PHP
5+ years of experience in web development, including 3+ years in dApp development
Hands-on experience integrating and interacting with both EVM and Non-EVM smart contracts
Familiarity with ConnectKit, wagmi, and Viem libraries for modern wallet connection flows
Experience deploying web applications on AWS using services like Elastic Beanstalk, EC2, and S3, with understanding of environment config, auto-scaling, and CloudWatch logging
Proficient in setting up CI/CD pipelines using GitHub Actions (or similar tools), including artifact packaging and automated deployment
Working knowledge of CloudFront, CDN behavior, cache invalidation, and AWS Certificate Manager
Familiarity with IAM roles, security groups, VPC setup, and cloud infrastructure security best practices
Experience with front-end frameworks (React, Next.js, Vue, etc.)
Comfortable working in Linux environments and using Git for version control
Understanding of DeFi concepts and major protocols (e.g., Uniswap, Aave, Curve)
Awareness of and ability to support Whisk infrastructure and security requirements
Basic knowledge of HTML5, CSS3, and animation techniques (e.g., transitions, keyframes, scroll-triggered effects), with the ability to integrate them into PHP-rendered views or templating engines

Benefits

A dynamic, collaborative, and highly technical work environment
Opportunities for professional growth in a rapidly evolving industry
Remote-first setup with regular opportunities to meet the team in person
Competitive compensation package

Application Process

Please submit the following:

Your resume
A cover letter explaining your interest in the role
Your response to the following technical challenge:

Challenge:

Describe a high-level architecture and solution for a dApp that supports both EVM and non-EVM wallets (e.g., MetaMask and Braavos). Include considerations for wallet detection, abstraction, and secure transaction signing.

Seniority level

Seniority level
Mid-Senior level

Employment type

Employment type
Full-time

Job function

Industries
IT Services and IT Consulting

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