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Lead QA Automation Engineer Location : New Belgrade Work Pattern : Hybrid (Ideally 3 days a week on-site) Reports to : QA Manager About Greencastle Digital Greencastle Digital is a forward-thinking company in the dynamic betting and gaming industry , with a newly established Development Centre in Belgrade. Our mission is to unite the brightest minds in digital technology, product development, customer experience, and marketing to deliver innovative solutions for clients across Europe. About the Role We are seeking a highly skilled Lead QA Automation Engineer to join our growing team in Belgrade. As the Lead QA Automation Engineer, you will take a leadership role in defining and executing the automation strategy for the team. You will be responsible for leading the development and maintenance of automated test frameworks, ensuring the quality and reliability of our software solutions across web, mobile, and gaming platforms. This position requires technical leadership, deep expertise in test automation, You will mentor a team of QA engineers, collaborate with cross-functional teams, and drive best practices in test automation. Key Responsibilities Leadership & Mentorship : Lead a team of senior and junior QA engineers, providing guidance, mentorship, and fostering a culture of continuous improvement in automation practices. Automation Framework Development : Design, develop, and maintain scalable and robust automated test frameworks using tools like Selenium, Appium, TestNG, Cucumber (BDD), JUnit, Sikuli, Playwright, and with expertise in Java and C#/.NET. API Testing : Develop and execute automated tests for RESTful APIs, ensuring full test coverage and reliability, particularly for game-related APIs and services. Test Strategy & Execution : Define and implement comprehensive test strategies for new and existing features across web, mobile, games, and backend services in the betting industry. Continuous Integration/Continuous Delivery (CI/CD) : Integrate automated tests into CI/CD pipelines using tools like Jenkins, Azure DevOps, or GitLab CI, enabling rapid and reliable software delivery. Collaboration : Work closely with developers, product managers, and other QA engineers to ensure quality is maintained throughout the development lifecycle. Code Quality & Best Practices : Write clean, maintainable, and well-documented test code following industry best practices. Promote code quality and adherence to automation standards. Defect Management : Lead the identification, documentation, and resolution of defects, ensuring thorough root cause analysis and preventative measures. Documentation & Reporting : Maintain comprehensive documentation for automation frameworks, test strategies, and processes to ensure transparency and knowledge sharing across teams. Continuous Improvement : Stay updated with the latest trends and technologies in automation and gaming quality assurance, and propose new tools and methodologies to improve testing efficiency. Required Qualifications Experience :  10+ years of hands-on experience in QA automation, with at least 3+ years in a leadership or senior technical role. Technical Expertise : Strong proficiency in Selenium WebDriver, Appium, TestNG, Sikuli (Java), and Playwright (C#/.NET). Extensive experience with BDD frameworks such as Cucumber and ReqnRoll. Expertise in API testing, using tools like RestAssured, Postman, or similar. Familiarity with CI/CD tools like Jenkins, Azure DevOps, or GitLab CI. Coding Skills : Advanced knowledge of Java and C#/.NET for test automation scripting. Familiarity with source control