Principal Software Development Engineer in Test / Mitikah (CDMX) Responsibilities Design, develop, document, and maintain tools, test cases, and automation design for current and next‑generation software platforms. Collaborate with Product Management, software engineering, DevOps, and other technical teams in release planning and coordination. Interpret functional requirements and designs to plan, develop, write, execute, and automate functional and data‑validation test plans. Work with engineering and infrastructure teams on strategy and maintenance of required TDD/CI/CD development and QA environments. Provide feedback and influence the design process to help build a testable platform, applications, and data models. Design and build quality, performance, and reliability from day one. Drive effective technical execution and communication as a member of Agile scrum teams. Document and communicate module and automation framework functions, interfaces, performance criteria, test cases, and results to diverse audiences. Estimate effort, schedule, and develop tasks according to agreed scope and development milestones to meet overall project timelines. Conduct defect management activities, including problem identification, issue research, analysis, and documentation. Work closely with the development team for unit‑test reviews, issue diagnosis, resolution, and closure. Lead or assist in data analysis to determine data health and consistency or the root cause of issues. Lead the technical vision of the assigned product. Train engineers on new tools, methodologies, and technologies; mentor engineers to foster personal and professional growth. Identify areas of improvement and drive/implement solutions to enhance efficiency and quality. Identify technical solutions to problems and conduct POCs for new tools and applications. Qualifications BS in Computer Science or a related field, or 8 years of technical experience as an SDET or similar role. 8+ years of applied professional experience in an object‑oriented programming language. Knowledge of complete development lifecycle, including code standards/reviews, source control processes, building, and testing. Languages: Java, C#, Kotlin/Swift, Python. Automation: Selenium/WebDriver, Appium, TestNG/JUnit/xUnit, REST Assured/HTTP client libraries. Mobile: XCTest/XCUITest, Espresso, device farms (e.g., SauceLab). Experience implementing software test automation into CI/CD processes (Jenkins, GitHub Actions, Docker, Kubernetes, Linux, Git, Maven/Gradle, etc.). Quality Intelligence: dashboards/metrics, AI/ML‑assisted test generation & failure analysis. Experience designing and implementing mobile applications for iOS and Android. Experience designing, implementing, maintaining, and scaling test automation frameworks with focus on extensibility, scalability, maintainability, and high performance. Strong experience in developing and implementing end‑to‑end test strategies. Prior work experience and understanding of Agile. Excellent verbal and written communication skills and ability to interact effectively across all levels. Ability to take a proactive, problem‑solving/troubleshooting approach to identifying and solving problems. Experience with AI/ML‑driven testing platforms and predictive analytics. Partner with DevOps to optimize pipeline reliability and speed, including test parallelization, containerization, and environment as code. Drive engineering excellence via clean automation patterns, code reviews, and metrics (coverage, pass rate, MTTR) and continuous improvement. Nice to Have Experience with microservice architecture. Experience with backend testing (API testing). Experience with Jenkins or other CI/CD tools. #J-18808-Ljbffr