Marc-Enzo Bonnafon contributed to the prebid/prebid-server-java repository by enhancing the Mobkoi bidder integration over a two-month period. He developed a targeted endpoint configuration using Java and YAML, improving routing specificity and reliability for ad serving within Prebidserver. His approach focused on configuration management, enabling smoother future integrations and reducing misrouting risks. In the following month, Marc-Enzo addressed maintainability by removing the endpoint override, enforcing the default endpoint, and simplifying the configuration logic. This backend development work reduced misconfiguration and runtime errors, resulting in a more stable and maintainable Mobkoi bidder integration for server-side bidding environments.