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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Test Engineer - **Company:** It Lab - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Business Logic, Automation of Tests, Microsoft Azure, Boost (C++ Libraries), Cloud Computing, Code Coverage, Software Quality, Continuous Integration, Distributed Systems, Fraud Prevention and Detection, Load Testing, Regression Testing, Selenium, Software Quality Assurance (SQA), Software Testing Automation Framework, Data Streaming, System Integration Testing, Systems Integration, Test Data, Web Applications, Performance Testing, Large Language Models, Cypress (Programming Language), Backend, Git, Bug Reporting, Playwright, Front End Software Development, Microservices - **Published:** September 17, 2026 - **Apply:** https://www.buscojobs.com.es/senior-test-engineer-en-madrid-ID-371815420 ## About the Role 5-10 years of experience in QA engineering, test automation, or software quality assurance Strong experience designing and implementing automated test strategies for complex web applications and distributed systems Hands-on expertise with test automation frameworks such as Selenium, Playwright, or Cypress Experience testing APIs, frontend interfaces, backend workflows, and end-to-end system integrations Familiarity with performance testing, regression testing, and release validation in enterprise environments Experience validating AI/LLM-driven systems, including prompt behavior, output quality, and response consistency, is strongly preferred Hands-on experience with Git, CI/CD pipelines, defect tracking, and automated test reporting Prior engagement in large-scale enterprise environments and mission-critical systems Candidate must be located in an EU member country Excellent communication skills in English Nice to Have Experience in fintech or financial services Familiarity with cloud platforms such as AWS or Azure Experience working with test data validation, backend integrations, and microservices-based architectures ## Description At IT Labs, we work with premier global consulting organizations to help Tier 1 banks and insurance companies transform operations through AI, automation, and advanced analytics, with a special focus on Anti-Financial Crime.Our client's expertise includes AI-driven fraud prevention, Anti-Money Laundering (AML), and Know Your Customer (KYC) solutions-designing and implementing intelligent systems that enhance detection, automate investigations and due diligence, boost efficiency, and help institutions stay ahead of regulatory change.You'll work at the intersection of business transformation, data science, AI engineering, cloud technologies, and financial services, tackling complex challenges with innovative technology for banking and insurance clients across Europe.Help enable leading consulting organizations to deliver advanced solutions to top global banks and insurers-as they use AI to safeguard millions of customers and vast financial assets.If ensuring the quality, reliability, and performance of intelligent enterprise platforms excites you, we want you on our team.ResponsibilitiesDesign, document, and execute comprehensive automated testing strategies spanning APIs, frontend applications, backend services, and data flowsCreate and maintain reliable automated test scripts using frameworks such as Selenium, Playwright, or CypressDevelop verification frameworks for validating LLM prompt behaviors, model outputs, response consistency, and hallucination ratesExecute system integration testing, regression testing, and performance/load testing ahead of platform releasesValidate end-to-end workflows and automated actions against defined business logic, system behavior, and performance SLAsDocument detailed bug reports, analyze issues to identify root causes, and collaborate closely with developers on resolutionContribute to quality standards, test coverage practices, release readiness processes, and continuous improvement of QA methodologiesIntegrate test automation into CI/CD pipelines and support quality assurance across cloud-hosted applications and servicesRequired Skills & Experience5-10 years of experience in QA engineering, test automation, or software quality assuranceStrong experience designing and implementing automated test strategies for complex web applications and distributed systemsHands-on expertise with test automation frameworks such as Selenium, Playwright, or CypressExperience testing APIs, frontend interfaces, backend workflows, and end-to-end system integrationsFamiliarity with performance testing, regression testing, and release validation in enterprise environmentsExperience validating AI/LLM-driven systems, including prompt behavior, output quality, and response consistency, is strongly preferredHands-on experience with Git, CI/CD pipelines, defect tracking, and automated test reportingPrior engagement in large-scale enterprise environments and mission-critical systemsCandidate must be located in an EU member countryExcellent communication skills in EnglishNice to HaveExperience in fintech or financial servicesFamiliarity with cloud platforms such as AWS or AzureExperience working with test data validation, backend integrations, and microservices-based architecturesWorking ConditionsFull-time (40 hours/week)Individual Contract or B2B arrangementPaid Time Off (PTO) providedRemote/Hybrid workOur valuesWe are a company that seeks the best for both our employees and clients, reaching beyond expectations in turning dreams into reality.Our way of working is rooted in our core values (Integrity, Excellence, Proactivity, Innovation, and People), with an expectation that our future colleagues will make these their second nature in their everyday work and life.We don't ask for perfection, but we do appreciate people motivated to better themselves in every conceivable aspect.About IT LabsFounded in ****, IT Labs is an international software tech company, specializing in purpose and process-driven teams for high-performance, innovation, transformation, and efficiency.Our HQ is in Palm Beach Gardens, Florida, and we have teams around the world - the UK, the Netherlands, Brazil, Argentina, Serbia, Croatia, BIH, Montenegro, North Macedonia, and the Middle East.We are constantly growing, and we would love for you to become part of our team!#J-*****-Ljbffr ## 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