Developed and integrated a startup-time database seeding mechanism for the medhatelmasry/GoodBooks API project, addressing the need for consistent initial data across environments. Designed a dedicated DatabaseSeeder class and incorporated it into the application’s startup sequence via Program.cs, ensuring data is seeded automatically after EF Core migrations and only once per initialization. This solution, created through collaboration with other team members, resolved a tracked GitHub issue and streamlined environment setup for development, testing, and staging. The work demonstrated proficiency in C#, .NET, dependency injection, and database migrations, ultimately improving onboarding speed and maintaining data integrity across deployments.