Senior QA Automation Engineer (AQA/SDET)
Crystal Intelligence1 month ago
Warsaw, PolandSenior
Responsibilities
- Design, develop, and maintain automated tests for backend, API, frontend, data-processing, integration, contract, and data-validation scenarios.
- Analyze failed tests and production-like issues using logs, metrics, monitoring dashboards, and API responses.
- Conduct code reviews and pioneer new testing approaches, architectures, and frameworks.
- Shape technical vision, make high-level trade-offs, and prioritize testing based on business needs, risks, and timelines.
- Define QA best practices, improve processes, maintain documentation, and produce clear defect reports.
- Evaluate and guide adoption of AI-assisted test generation, code review, automation frameworks, and no-code workflow automation.
- Collaborate with developers, business stakeholders, and cross-functional teams to improve testability, observability, and service reliability.
Requirements
- 5+ years of AQA/SDET experience testing complex backend, API, data-heavy, or distributed systems.
- Strong Java programming skills for test automation and hands-on experience building test automation frameworks.
- Solid SQL and PostgreSQL experience, including advanced queries, data validation, and investigation of data inconsistencies.
- Strong test design skills and understanding of backend architecture, environment-based configuration, service health checks, and deployment validation.
- Experience with Playwright, Postman, REST-assured, Allure, Git, and Scrum or another Agile delivery process.
- Hands-on experience with Cursor and Claude, including creating custom skills, agents, and rules for QA and development workflows.
- Hands-on experience with AI no-code tools and business process automation such as n8n.
- Proficiency in English.
- QA technical leadership experience, performance testing experience, and Python knowledge are preferred.
Benefits
- Fully remote role open to applicants anywhere in Europe.
About Crystal Intelligence
Crystal Intelligence builds blockchain analysis and transaction monitoring software for financial institutions, law enforcement agencies, and regulators. Offerings include a free blockchain explorer plus subscription SaaS and APIs for investigations and AML compliance using real-time on-chain intelligence; the privately held company was founded in 2016 and is headquartered in Amsterdam, Netherlands.