Senior QA Automation Engineer

Crystal Intelligence provides blockchain analytics and decision-intelligence software for crypto compliance, transaction monitoring, investigations, and risk management. Its clients include banks, payment providers, crypto exchanges, VASPs, regulators, law-enforcement agencies, and digital-asset businesses.

Amsterdam, NL
About Crystal Intelligence

Crystal Intelligence operates a blockchain intelligence platform combining cross-chain analytics, AI, and verified entity attribution. Its products support transaction monitoring, sanctions and wallet screening, AML compliance, blockchain investigations, case management, risk analysis, stablecoin market intelligence, and audit-ready reporting across more than 330 blockchains. The company also provides investigative services, advisory support, and crypto compliance and investigation training for financial institutions, crypto-native companies, VASPs, regulators, law-enforcement bodies, legal teams, and other organizations managing digital-asset risk.

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Skills

About the Role

You will design, develop, and maintain automated tests for backend, API, frontend, and data-processing systems. You will investigate failures, review code, prioritize testing, improve QA practices, evaluate AI tools, collaborate on service reliability, and maintain test documentation and defect reports.

Requirements

  • 5+ years of AQA/SDET experience testing complex backend, API, data-heavy, or distributed systems
  • Understanding of SOLID principles and design patterns applied to test frameworks
  • SQL and PostgreSQL experience, including advanced queries and data validation
  • Test design skills
  • Understanding of backend architecture, environment configuration, service health checks, and deployment validation
  • Java skills for test automation
  • Experience with test automation tools and frameworks such as Playwright, Postman, REST-assured, and Allure
  • Experience with Git
  • Experience working in Scrum or another Agile delivery process
  • Experience with Cursor and Claude, including custom skills, agents, and rules
  • Experience with AI no-code tools and business process automation such as n8n
  • English proficiency

Responsibilities

  • Design, develop, and maintain automated tests for backend, API, frontend, and data-processing systems
  • Create test coverage for edge cases
  • Analyze failed tests and production-like issues using logs, metrics, dashboards, and API responses
  • Conduct code reviews
  • Pioneer testing approaches, architectures, or frameworks
  • Establish technical vision and make cross-project trade-offs
  • Prioritize testing efforts based on business needs, risks, and timelines
  • Identify and implement QA process improvements and best practices
  • Evaluate and drive adoption of AI tools for QA and development workflows
  • Define guidelines for AI tool use in QA
  • Collaborate to improve service testability, observability, and reliability
  • Maintain test documentation, automation coverage notes, and defect reports

Benefits

  • Fully remote work