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Senior QA Engineer - Blockchain Testing - Windranger Labs
QA Engineer
Lead quality assurance for blockchain products, designing and executing tests for smart contracts and on‑chain infrastructure using Python, Solidity, and Ethereum tools.
About the role
Key Responsibilities
- Design, develop, and maintain automated test suites for smart contracts and blockchain protocols.
- Perform manual and automated functional, integration, and security testing of on‑chain assets and DeFi components.
- Collaborate with developers to review code, identify vulnerabilities, and propose remediation strategies.
- Integrate testing pipelines with CI/CD workflows and monitor test coverage metrics.
- Document test cases, results, and defect reports in a clear, traceable manner.
Requirements
- 5+ years of QA experience in software or blockchain environments.
- Strong proficiency in Solidity, Ethereum, and related smart contract frameworks.
- Hands‑on experience with Python, Node.js, and test automation tools (e.g., Truffle, Hardhat, Brownie).
- Knowledge of security best practices for smart contracts and blockchain systems.
- Excellent analytical, communication, and problem‑solving skills.
Skills
solidityethereumpython