Sukhraj Sidhu developed a startup-time database seeding mechanism for the medhatelmasry/GoodBooks repository, focusing on automating initial data population after migrations. He designed and implemented a DatabaseSeeder class in C# and integrated it into Program.cs using established dependency injection and data initializer patterns. This solution addressed a specific Github issue by ensuring the API database is seeded only once during initialization, reducing manual setup for development, testing, and staging environments. The work required cross-team collaboration, research, and validation, demonstrating proficiency in API development, EF Core migrations, and startup configuration. The result improved environment consistency and streamlined onboarding processes.