Web3 Developer

rio de janeiro, rio de janeiro, Brazil • Posted June 06, 2026

Job Type: Full-time
Location: rio de janeiro, rio de janeiro
Posted: June 06, 2026
Category: Other-General
Application Deadline: July 16, 2026

Role Description

**About the Role**
57BLOCKS is looking for a skilled **Web3 Developer** with hands-on experience in smart contract development, blockchain integrations, and test automation. This is a high-impact opportunity to work in a technically challenging environment, collaborating with distributed teams to build innovative decentralized solutions.
**Responsibilities**:
- Design, develop, and audit smart contracts using **Solidity**:
- Integrate Web3 protocols into existing systems
- AI integration into existing systems
- Automate unit and integration testing pipelines
- Contribute to the design and development of **Proof of Concepts (PoCs)**:
- Collaborate with technical teams to implement scalable blockchain solutions
- Maintain high code quality through best testing practices
- Work with blockchain technologies such as **Ethereum**, **Bitcoin**, or **EVM-based systems**
**Requirements**:
- Proven experience developing smart contracts with **Solidity**:
- ...

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