Collaborate closely with blockchain engineering teams in an agile, remote environment to ensure the quality and reliability of backend services, APIs, and blockchain integrations.
Design, implement, and execute manual and automated test suites covering backend services, APIs, and platform workflows.
Perform API testing and validation using tools such as Postman, curl, or similar.
Validate blockchain transaction lifecycles, including wallet interactions and on-chain verification using block explorers and testnets.
Investigate and troubleshoot system behavior using logs, API responses, and blockchain explorers.
Take ownership of testing tasks within sprint cycles and actively participate in agile ceremonies

5+ years of experience in Software Quality Assurance with a strong emphasis on backend and API testing.
Experience working in fintech or other regulated environments.
Solid understanding of REST APIs and HTTP-based services.
Proficiency using API testing tools such as Postman, curl, or similar.
Hands-on experience testing microservices or distributed systems.
Experience implementing test automation frameworks (Playwright, Selenium, Cypress, or similar).
Understanding of blockchain fundamentals, including transactions, wallets, and smart contracts.
Experience using block explorers and testnets during testing.
Experience working with JIRA or similar issue-tracking tools.
Strong analytical and debugging skills with a proactive approach to identifying issues.
Ownership mindset and ability to work independently in a remote engineering environment.
Comfort leveraging AI-assisted development and testing tools to improve productivity and quality.
Nice to Have: Experience with Ethereum and smart contract tooling such as Solidity, Hardhat, or Foundry.
Experience integrating automated tests into CI/CD pipelines.
Prior experience testing blockchain infrastructure, smart contracts, or Web3 platforms.

QA Engineer

Key skills