Senior Test Automation Engineer (AI Systems)

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 flowsBuild and maintain automated test suites using Selenium, Playwright, Cypress, or comparable frameworksDevelop test approaches for validating LLM prompts, model outputs, consistency, and hallucination behaviorExecute system integration, regression, and end-to-end testingPerform performance and load testing before production releasesValidate that automated workflows meet defined business rules and performance SLAsInvestigate defects, document reproducible bug reports, and support root-cause analysisCollaborate closely with developers and platform teams on issue resolutionMaintain reliable regression coverage across evolving application releasesContribute to test standards, quality gates, and release-readiness criteria Requirements 5-10 years of professional QA, test automation, or software testing experienceStrong hands-on experience with Selenium, Playwright, Cypress, or similar automation frameworksProven experience testing complex web applications, APIs, and backend integrationsExperience designing and executing end-to-end, regression, and system integration testsHands-on experience with performance or load testingStrong ability to investigate failures, identify root causes, and document defects clearlyExperience integrating automated testing into CI/CD pipelinesFluent professional English