Add KA-NABELL/kahirokunn nomination for the EU seat (#1667)

elections/2025-SC-EU/candidate-kahirokunn.md

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+-------------------------------------------------------------
+name: Kahiro Okina
+
+ID: kahirokunn
+
+info:
+
+- affiliation: KA-NABELL
+
+-------------------------------------------------------------
+
+## Contributions to Knative
+
+- **Enhanced Knative Operator:** Expanded the configurable API surface of the Knative Operator, empowering users with greater flexibility and control over their deployments. [Explore my contributions](https://github.com/knative/operator/pulls?q=is%3Apr+author%3Akahirokunn+is%3Aclosed).
+
+## Why I'm running
+
+At KA-NABELL, Japan’s largest trading card e-commerce platform, I drive the evolution of our cloud-native infrastructure—built entirely on Knative. By leveraging Knative’s well-defined interfaces, we’ve transformed how our teams build, deploy, secure, and monitor both our management functions and microservices. This approach not only simplifies the complexities inherent in a distributed system but also delivers exceptional cost efficiency; for example, our microservices outside of business hours cost literally 0 dollars.
+
+Our deep integration with Knative has allowed us to standardize processes across our organization, providing a robust foundation that scales with our business. However, being a heavy user of Knative has also revealed opportunities for further innovation, such as the following:
+
+- **Enhanced Authentication & Session Management:** Advanced extensions that leverage Knative to streamline security and improve user experience.
+- **Optimized Workload APIs:** Designing scalable APIs that support high-demand operations while maintaining cost efficiency.
+- **Advanced HTTPRoute Extensions:** Crafting secure and efficient routing solutions to ensure seamless connectivity and service reliability.
+- **Innovative Cloud-Native Best Practices:** Pioneering strategies that harness the full power of Knative, driving continuous improvement in our platform’s agility and performance.
+- **Harmonizing Multi-Cluster & Multi-Environment Operations**: Innovating robust strategies to synchronize configurations and revisions across various environments, thereby empowering a more streamlined and resilient GitOps workflow.
+
+I look forward to serving as a bridge between our engineering teams and the broader user community, and contribute to the evolution of Knative by promoting continuous innovation from a unique perspective.