Worked on enhancing DNS access for multitenant Kubernetes deployments by implementing Multitenancy DNS Access Port Support in the deckhouse/deckhouse repository. Focused on updating Helm templates and resource files to enable both TCP and UDP traffic on ports 53 and 5353, the changes improved DNS reliability and tenant isolation while reducing manual configuration overhead. Collaborated cross-team to address DNS access issues in the default project template, ensuring scalable and robust deployments. Leveraged skills in Infrastructure as Code and YAML to deliver these improvements, demonstrating a practical approach to multitenancy architecture and DNS port handling within a complex cloud-native environment.