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Full-Stack DeFi Web Developer

Re7 CapitalUnited Kingdom

5 days ago

Job type

Full-time

Temporary

Job description

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.

About Us

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

Mid-Senior level

Employment type

Full-time

Job function

Industries

IT Services and IT Consulting

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