Web 3 Engineer

About the role

We're building Web3 payment infrastructure that lets users and merchants move value across multiple blockchains. We're looking for a Web3 + Full Stack Engineer who can own features end-to-end — from on-chain integration through backend services to the user-facing product.

What you'll work on

• Build and maintain integrations with multiple blockchains (e.g. Bitcoin, Ethereum and other EVM chains) — transaction construction, broadcasting, and confirmation handling.
• Write, test, and deploy smart contracts (Solidity or equivalent) for deposits, withdrawals, and on-chain logic.
• Design and build backend services and APIs — ledger logic, merchant payment endpoints, webhooks — that connect on-chain activity to the rest of the product.
• Build frontend features for the wallet, merchant dashboard, or checkout flows (React or similar), consuming the APIs and on-chain data you build.
• Own features across the stack: from a contract or chain integration through the API layer to the UI a user or merchant actually touches.
• Write tests covering blockchain-specific edge cases (chain reorgs, stuck transactions, gas estimation) as well as standard backend/frontend test coverage.
• Monitor and maintain blockchain nodes and related infrastructure as needed.
• Collaborate with product, design, and security on features that handle real funds.

What we're looking for

Must-have

• Experience building on at least one major blockchain platform (Ethereum/EVM, Bitcoin, Solana, etc.), including writing and testing smart contracts if EVM-based.
• Solid understanding of blockchain fundamentals: wallets, transactions, gas/fees, confirmations, and finality.
• Full-stack development experience: backend (Node.js, Go, Python, Rust, or similar) and frontend (React or similar), building and consuming APIs across both.
• Understanding of common security pitfalls in Web3 development (reentrancy, front-running, key management, etc.).
• Comfortable working with Git, CI/CD, and standard software engineering practices.
• Ability to work independently across the stack without needing every layer handed off by a specialist.

Nice-to-have

• Experience with multi-chain integrations (more than one blockchain in production).
• Familiarity with wallet SDKs, RPC providers, or indexing tools (e.g. The Graph).
• Experience with payment systems, exchanges, or custodial platforms.
• Exposure to Layer 2s, cross-chain bridges, or account abstraction.
• Mobile development experience (iOS/Android), if the product includes a mobile wallet.
• Contributions to open-source Web3 projects.

Pay: ₦2,800,000.00 - ₦4,200,000.00 per hour

Work Location: Remote