Senior Test Automation Engineer (C# / .NET) Full time employee Hybrid Position - Monterrey - MX attending the office 2 days per week. The company provides a comprehensive and competitive benefits package for its employees. Legal Benefits Christmas Bonus: 15 days Vacation: 12 initial days (with gradual increase based on seniority) Vacation premium: 25% Profit Sharing (PTU) Social Security: IMSS, Infonavit, and Afore (SAR) Remote Work Expense Allowance: $750 MXN monthly Above-Law Benefits Major Medical Insurance (employee and family group: spouse and children) Life Insurance for employee Dental Plan (employee and family group: spouse and children) Savings Fund: 2% of gross monthly base salary (capped) Grocery vouchers: $2,000 MXN monthly We're looking for a Senior Test Automation Engineer with a strong software development background to join our team in Monterrey. In this role, you will not only write tests but also develop hybrid cloud applications (SaaS, PaaS, IaaS). You will be responsible for the quality, scalability, and performance of our web APIs and services using a modern Microsoft stack. Key Responsibilities Automation Development: Design and develop high-quality, reusable test automation for Web APIs, UI, and performance using C# and Selenium. Cloud & DevOps: Leverage Azure Test Plans and build YAML pipelines in Azure DevOps to support CI/CD. Agile Excellence: Work within Agile + SAFe methodologies to deliver high-quality products on time. Must-haves -Bachelor's degree in Engineering or Computer Science. -Minimum of 5 years of experience with .NET Framework, .NET Core, and C#. -At least 2 years as a Sr in roles focused on software quality and automated test frameworks. -Fluent conversational English is mandatory.