During November 2024, Jiulong Wang focused on backend development and DevOps for the Flagsmith/flagsmith repository, addressing a critical authentication issue affecting Google OAuth in unified Docker deployments. He restored the OAuth flow by configuring the Cross-Origin-Opener-Policy header through the DJANGO_SECURE_CROSS_ORIGIN_OPENER_POLICY setting, ensuring compatibility whether the frontend was hosted independently or within the unified image. This Python and YAML-based solution reduced user login failures and support overhead while improving deployment reliability. Jiulong also documented the security header changes and deployment guidance in Markdown, supporting future maintenance and audit needs. His work demonstrated depth in configuration management and deployment stability.