Blockchain Consultant

About the role

This role involves leading the quality assurance efforts for blockchain-based systems. Responsibilities include developing and implementing test strategies, plans, and cases. The consultant will perform various types of testing, such as functional, integration, system, regression, and performance testing, specifically for blockchain platforms and decentralized applications (DApps). A key aspect is validating smart contracts for correctness, security, gas efficiency, and adherence to business logic.

The position also requires testing core blockchain operations, including node setup, network configurations, consensus mechanisms, and the transaction lifecycle. The consultant will conduct API testing for blockchain services and their integrations with external systems. Identifying, logging, tracking, and verifying defects using appropriate management tools is an ongoing task. Collaboration with blockchain developers, architects, and DevOps teams is essential across the entire software development lifecycle.

Success in this role means ensuring high quality and security standards for all blockchain deployments. This includes participating in security testing, such as vulnerability assessments and basic penetration testing for smart contracts. The consultant will also support User Acceptance Testing (UAT), production validation, and post-deployment monitoring. Adherence to quality standards, best practices, and relevant regulatory requirements is crucial for all testing activities.

The annual salary for this full-time remote position is 120,000 USD.

Skills that matter here

• Blockchain technologies: This role requires a deep understanding of blockchain to design and execute effective test strategies for various platforms and DApps.
• Smart contracts: The consultant will be responsible for validating smart contracts for correctness, security, and business logic compliance.
• Ethereum: Experience with major blockchain platforms like Ethereum is necessary for testing and validating blockchain operations.
• Truffle: Familiarity with blockchain testing tools such as Truffle is expected for hands-on testing of smart contracts and platforms.
• API testing: The role involves conducting API testing for blockchain services and their integrations with off-chain systems.
• CI/CD: Knowledge of CI/CD pipelines and DevOps practices is relevant for collaborating with development teams and streamlining testing processes.

Who this role suits

• A person with a strong background in quality assurance who has specialized in blockchain environments.
• Someone who is meticulous in identifying and tracking defects, ensuring thorough validation of complex systems.
• An individual who enjoys collaborating closely with technical teams, including developers and architects.
• A candidate who is proactive in ensuring security and compliance within decentralized applications.

From the employer

• Design, develop, and execute test strategies, test plans, and test cases for blockchain-based systems.
• Perform functional, integration, system, regression, and performance testing of blockchain platforms and DApps.
• Validate smart contracts for correctness, security vulnerabilities, gas optimization, and compliance with business logic.
• Test blockchain operations including node setup, network configurations, consensus mechanisms, and transaction lifecycle.
• Conduct API testing for blockchain services and integrations with off-chain systems.
• Identify, log, track, and verify defects using defect management tools.
• Collaborate closely with blockchain developers, architects, and DevOps teams throughout the SDLC.
• Participate in security testing, including vulnerability assessment and basic penetration testing for smart contracts.
• Support UAT, production validation, and post-deployment monitoring.
• Ensure adherence to quality standards, best practices, and regulatory requirements (where applicable).

• Strong experience in QA / Software Testing with focus on Blockchain technologies.
• Hands-on experience testing smart contracts (e.g., Solidity, Vyper).
• Knowledge of major blockchain platforms such as: Ethereum / Polygon / BSC / Hyperledger Fabric / Corda (any one or more).
• Experience with blockchain testing tools such as: Truffle, Hardhat, Ganache, Remix, Foundry (or similar).
• Experience with API testing tools (Postman, REST clients).
• Familiarity with CI/CD pipelines and DevOps practices.
• Knowledge of test automation frameworks is a plus.

• Full-time remote position.
• Salary: 120,000 USD per year.