Senior Test Automation Engineer (AI Systems)

About this role

About Gramian Gramian Consultancy is a boutique consultancy specializing in IT professional services and engineering talent solutions. With a strong background in software engineering and leadership, we help companies build high-performing teams by matching them with professionals who truly fit their needs. About the Role Our client is a Big4 Consultancy group that works with leading financial institutions on AI-driven transformation, automation, advanced analytics, and financial crime prevention . Their work spans intelligent fraud detection, AML/KYC modernization, autonomous workflows, enterprise AI platforms, and the secure industrialization of AI in highly regulated environments. We are looking for a Senior Test Automation Engineer to design and execute automated testing strategies for complex AI-enabled applications. The role spans API testing, frontend automation, backend data flows, system integration, performance testing, and validation of LLM outputs and prompt behavior . CONTRACT: Contractor assignment, expected October 2026 – July 2027, with potential extension COMMITMENT: Full-time LOCATIONS: Europe-based, preferably CEE; remote, with potential future hybrid work in Prague PROCESS: Initial qualification followed by technical and client interviews NOTES: Fluent English is required. Responsibilities Design and maintain comprehensive automated testing strategies across frontend, backend, APIs, and data flows. Build and maintain automated test suites using Selenium, Playwright, Cypress , or comparable frameworks. Develop test approaches for validating LLM prompts, model outputs, consistency, and hallucination behavior . Execute system integration, regression, and end-to-end testing. Perform performance and load testing before production releases. Validate that automated workflows meet defined business rules and performance SLAs. Investigate defects, document reproducible bug reports, and support root-cause analysis. Collaborate closely with developers and platform teams on issue resolution. Maintain reliable regression coverage across evolving application releases. Contribute to test standards, quality gates, and release-readiness criteria. Requirements 5–10 years of professional QA, test automation, or software testing experience . Strong hands-on experience with Selenium, Playwright, Cypress , or similar automation frameworks. Proven experience testing complex web applications, APIs, and backend integrations . Experience designing and executing end-to-end, regression, and system integration tests. Hands-on experience with performance or load testing . Strong ability to investigate failures, identify root causes, and document defects clearly. Experience integrating automated testing into CI/CD pipelines. Fluent professional English .