Developed a comprehensive end-to-end testing suite for the archivesspace/archivesspace repository, focusing on core entities such as Accessions, Agents, Digital Objects, Locations, and Resources. Leveraged Cucumber and Selenium WebDriver to implement behavior-driven development practices, enabling automated validation of create, edit, delete, and management workflows. The work included setting up a dedicated testing environment and integrating linting to enforce code quality standards. By expanding test coverage and automating critical user flows in Ruby on Rails, this effort enhanced release quality, reduced regression risk, and accelerated feature validation, contributing to more robust and maintainable application development processes within the project.