As a member of the Platform Squad, my primary focus was on facilitating the merger of the CodinGame for Work and Coderpad web applications. Our objective was to transition from two independent systems to a unified platform. I actively contributed to this initiative by implementing new functionalities and updating existing ones. ∎ SSO Update and Testing: Updating and testing of the Single Sign-On (SSO) mechanism after migrating from a local identification system to a third-party identification service using AWS Cognito. ∎ User Data Synchronization: Implemented mechanisms to ensure seamless synchronization of user deletions and creations between both applications, as well as with AWS Cognito. ∎ UI Enhancements: Contributed to the development of new user interface elements, ensuring coherence between the frontend codebases of both applications. ∎ Migration to New Identification System: Spearheaded the migration of users to the new identification system, ensuring minimal disruption to user experience. ∎ Collaborative Processes: Actively participated in code reviews, technical kickoff meetings, and design sessions.Technologies and Tools: ∎ Main: Java JEE, JUnit, Ruby On Rails, React, Material UI, PostgreSQL, AWS ∎ Others: Eclipse, VSCode, LaunchDarkly, Gitlab, Asana