Web3 QA Automation Engineer - Europe

Further Details

Secure a pivotal role as a Web3 QA Automation Engineer in Aragón, Spain, through JR Spain, representing the Braintrust client. This position demands a robust understanding of both manual and automated testing methodologies, with a specific focus on Web3 technologies. The ideal candidate will contribute to the rigorous testing of blockchain applications, ensuring seamless user experiences and robust security. This role is perfect for a QA professional with a proven track record in designing and executing comprehensive test cases, including regression testing. You will be instrumental in identifying and reporting bugs, collaborating with international teams, and driving the quality of innovative Web3 solutions. This is a prime opportunity for career advancement in the rapidly evolving blockchain industry.

Web3 QA Automation Engineer - Europe

JR Spain is actively seeking a skilled Web3 QA Automation Engineer to join their team, representing the Braintrust client in Aragón, Spain. This role is crucial for ensuring the quality and reliability of cutting-edge Web3 applications. The position requires a professional with a strong foundation in quality assurance principles and a passion for the blockchain ecosystem.

This is an excellent opportunity for individuals with 3-5 years of experience in QA, proficient in both manual and automated testing. The role involves in-depth testing of Web3 flows, including wallet integrations and smart contract functionalities, contributing to the development of secure and user-friendly decentralized platforms. Strong communication skills and the ability to work collaboratively with global teams are essential.

• Job Title: Web3 QA Automation Engineer
• Location: Aragón, Spain
• Experience: 3-5 years in QA/quality engineering
• Key Skills: Web3 flows, smart contract testing, automated testing (TypeScript, JavaScript, Python), bug reporting
• Client: Braintrust
• Employer: JR Spain
• Application Deadline: 18 December 2026

Skills

• 3-5 years in QA/quality engineering
• Hands-on with manual and automated testing
• Solid test-case design and execution
• Experience with core Web3 flows (wallet connections, transaction signing)
• Smart contract and wallet testing experience
• Experience testing third-party/exchange integrations
• Clear, reproducible bug reporting and tracking
• Strong written English communication
• Scripting ability in TypeScript, JavaScript, or Python

Duties and Responsibilities:

• Conduct manual and automated testing of web and mobile applications
• Design, execute, and maintain test cases, including regression sweeps
• Test core Web3 functionalities such as wallet connections and transaction signing
• Verify smart contract interactions and on-chain/off-chain behavior
• Test third-party and exchange integrations end-to-end
• Set up and manage test accounts, credentials, and environments
• Report bugs clearly and reproducibly in Linear or Jira
• Collaborate effectively with international teams across different time zones

How to apply

• 💼 Prepare your application: Ensure your CV and any relevant certifications are up-to-date.
• 🔎 Review requirements: Confirm you meet the 3-5 years of QA experience, hands-on automated testing skills, and specific Web3 knowledge.
• 🎯 Highlight Web3 expertise: Emphasize your experience with wallet connections (MetaMask, Trust Wallet, WalletConnect), transaction signing, smart contract testing, and third-party integrations.
• 🎓 Showcase scripting skills: Detail your proficiency in TypeScript, JavaScript, or Python for test automation.
• 📝 Document your experience: Be ready to provide clear, reproducible bug reports and evidence of your test case design and execution.
• 🌐 Apply online: Visit the provided application link to submit your candidacy.
• ⏳ Submit before the deadline: Ensure your application is received by 18 December 2026.
• 👉 Click here to apply:https://eurojobs.com/jobs/36956767/apply