We are seeking a Full-Stack Web3 Developer to bridge the gap between traditional web applications and decentralized networks. In this role, you will own the end-to-end development of decentralized applications (dApps), from crafting responsive user interfaces in React to building robust backend services and integrating smart contracts. The ideal candidate is fluent in the JavaScript/TypeScript ecosystem and possesses a deep understanding of blockchain fundamentals, wallet mechanics, and on-chain data flows.
Key Responsibilities
- Full-Stack Development: Design and build scalable, high-performance web applications using React (and Next.js) on the frontend and Node.js (Express/NestJS) on the backend .
- Web3 Integration: Implement seamless wallet connectivity (MetaMask, WalletConnect, Coinbase Wallet) and handle transaction lifecycles, including signing and error handling .
- Smart Contract Interaction: Integrate frontend and backend services with EVM-compatible smart contracts using libraries such as Ethers.js or Viem .
- Backend Services: Build and maintain APIs that index blockchain data, process transactions, and handle off-chain logic (e.g., user profiles, metadata caching) .
- Security & Best Practices: Ensure code quality and security, particularly regarding private key management (client-side vs. server-side) and protection against common vulnerabilities .
- Collaboration: Work closely with product managers and designers to translate requirements into technical specifications and deliver user-friendly Web3 experiences.
Required Qualifications
- Experience: 3+ years of professional software development experience, with at least 1 year of hands-on Web3 development .
- Frontend: Strong proficiency in React, Hooks, and modern state management (Context API, Redux, or Zustand) .
- Backend: Solid experience with Node.js and building RESTful APIs; familiarity with TypeScript is required .
- Blockchain: Practical experience with Ethereum (or other EVM chains) and a solid understanding of Solidity (reading and integrating, not necessarily writing from scratch) .
- Web3 Libraries: Proficiency with Ethers.js, Web3.js, or Viem .
Preferred (Nice to Have)
- Experience with Layer 2 solutions (Arbitrum, Optimism, Base, Polygon).
- Familiarity with The Graph protocol or custom blockchain indexers.
- Experience with account abstraction (ERC-4337) or smart wallets .
- Knowledge of DeFi protocols or NFT marketplaces (ERC-721/1155) .
- Prior experience in a startup environment or shipping production dApps .
What We Offer
- Compensation: Competitive base salary + equity/token incentives (if applicable).
- Benefits: Comprehensive health, dental, and vision insurance (US-friendly).
- Flexibility: Remote-first culture with flexible working hours.
- Growth: A learning budget for conferences and certifications (e.g., blockchain courses).
Skills Required
- 3+ years of professional software development experience
- At least 1 year of hands-on Web3 development experience
- Strong proficiency with React and Hooks
- Experience with modern state management such as Context API, Redux, or Zustand
- Solid experience with Node.js and building RESTful APIs
- Familiarity with TypeScript
- Practical experience with Ethereum or other EVM-compatible chains
- Solid understanding of Solidity for reading and integrating smart contracts
- Proficiency with Ethers.js, Web3.js, or Viem
- Experience with Layer 2 solutions such as Arbitrum, Optimism, Base, or Polygon
- Familiarity with The Graph protocol or custom blockchain indexers
- Experience with account abstraction, ERC-4337, or smart wallets
- Knowledge of DeFi protocols or NFT marketplaces using ERC-721 or ERC-1155
- Prior startup experience or experience shipping production dApps
What We Do
Ledgeroom is a full-service blockchain and cryptocurrency company. We develop custom software — including smart contracts, dApps, trading systems, and blockchain infrastructure — and provide cryptocurrency development services such as token creation and wallet integration. On the trading side, we operate crypto trading and staking solutions that help clients generate yield and manage digital assets securely. Whether you're launching a token, building a trading platform, or looking to stake assets, Ledgeroom delivers end-to-end blockchain expertise under one roof.
Why Work With Us
Ledgeroom is unique because we're the rare company that both builds blockchain software and operates in the crypto markets. We develop the trading and staking infrastructure we use — so our clients get engineering depth and market experience from a single partner.
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