Senior Full-Stack Developer Crypto Payments
We are looking for a senior full-stack developer to improve an existing e-commerce application and integrate cryptocurrency wallet and payment functionality. The application is already working, so the focus is on understanding the current codebase, modernising it without a full rewrite, and improving the architecture, APIs, validation, performance, error handling, and existing payment flow.
You will integrate browser wallets such as MetaMask and Rabby, add EVM testnet payments, implement backend transaction verification, connect payments to orders, and handle all transaction states. The stack includes React, TypeScript, Node.js, Express, SQLite, REST APIs, and Ethereum tools such as ethers.js, viem, wagmi, and WalletConnect. Strong experience with e-commerce payments, Web3 integrations, transaction security, and maintaining existing applications is required.
Budget range:
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About the client
I am a Senior Software Engineer and Technical Recruiter at Averiq Labs, with a strong focus on software engineering and building high-performing technical teams. You’re currently working on growing Averiq Labs’ presence on LinkedIn, recruiting senior full-stack developers, and improving the company’s professional brand.
- Hiring as
- Individual
- Experience level
- Junior, mid-level, senior
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