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QA Automation Engineer – Web3 (Europe)

Braintrust is hiring an experienced QA Automation Engineer to lead testing initiatives in the dynamic Web3 space.

This role offers a unique opportunity to work with decentralized finance protocols and blockchain-based applications within a fast-paced environment.

Join a leading private sector company where innovation meets quality assurance, ensuring secure and seamless user experiences for decentralized platforms.

Candidates will focus on manual and automated testing of smart contracts, wallet integrations, and complex on-chain interactions.

The position demands technical expertise in JavaScript, TypeScript, or Python, alongside a strong grasp of modern QA frameworks.

If you are looking for impactful career opportunities in the tech sector, this role provides the platform to grow and influence the future of Web3 development.

Private
full-time
Spain

Jobs Date Posted: 03 November, 2026
Jobs Last Date to Apply: 18 December, 2026
Industry: Software Engineering
Jobs Industry Type: Private
Job Hiring Organization: Braintrust
Experience Required (In months): 36
Occupational Category: Software Engineer
Employment Type: full-time
Advertisement Source: Eurojobs
Job Location: Castilla
Address Region: Castilla León
Country of Appointment: Spain
Employer Department: QA / Engineering
Employer Contact Phone: 92209423233
Employer Address: Castilla León, Spain
Work Hours: Standard Business Hours
🎓 Qualifications Required
BA
📌 Job Positions:

Further Details

Join a high-growth team as a QA Automation Engineer focusing on Web3 technologies and blockchain testing. Explore these urgent hiring with competitive benefits. This private company role in Spain offers competitive career development for professionals skilled in test automation, regression testing, and smart contract verification. Ideal for experts seeking international exposure and professional growth in one of the most exciting sectors of the digital economy. This position involves cross-functional collaboration and hands-on work with CEX integrations, wallet connections, and CI/CD pipelines. Develop your expertise using cutting-edge AI dev tools and blockchain explorers to maintain high standards of software excellence. Apply today to secure your place in a forward-thinking organization that values quality, precision, and technical innovation.

Senior QA Automation Engineer Opportunities

Braintrust is currently seeking a skilled QA Automation Engineer to focus on Web3 software testing. This position is perfect for professionals who want to work at the intersection of blockchain technology and automated quality assurance. Successful candidates will enjoy professional growth and exposure to international engineering standards.

  • Focus: Web3, Smart Contracts, and Blockchain integrations.
  • Tech Stack: TypeScript, JavaScript, Python, Playwright, Cypress.
  • Key Requirement: 3-5 years of hands-on software testing experience.

Detailed Job Positions Table:

Sr.#Job TitleRequired QualificationsLocationExperienceSalary RangeVacancies
1QA Automation EngineerBachelorSpain36 MonthsMarket Competitive1

Skills

  • Proficiency in TypeScript, JavaScript, or Python
  • Deep understanding of Web3 flows including wallet connections and transaction signing
  • Experience with manual and automated testing of mobile and web applications
  • Knowledge of smart contract testing and blockchain explorers
  • Experience with Playwright or Cypress automation frameworks
  • Familiarity with bug tracking tools like Linear or Jira

Duties and Responsibilities:

  • Design, execute, and maintain complex test cases for Web3 platforms
  • Own and manage daily regression testing and test account environments
  • Report and document reproducible bugs with clear evidence for the development team
  • Collaborate with international teams across different time zones
  • Validate third-party exchange integrations and on-chain behaviors
  • Utilize CI/CD pipelines and AI dev tools to optimize the testing lifecycle

How to apply

  • 💼 Ensure your CV is updated to reflect your experience with Web3 testing and automation tools.
  • 🎯 Prepare detailed examples of your work with Playwright, Cypress, or similar frameworks for the interview.
  • 🌐 Visit the official application page via the link provided below.
  • ⏳ Submit your application before the closing date of 18 December, 2026.
  • ✅ Complete all fields in the registration portal and attach your documentation.
  • 📩 Keep an eye on your email for further instructions regarding the assessment process.



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