Kenta Yamamoto

Developed and maintained mobile apps using native languages and Flutter. Maintained and enhanced core insurance policy management system built on Java and SQL. Migrated legacy modules to modern REST API architecture, reducing errors by 30%. Implemented secure coding standards and improved data access control. Improved system performance by optimizing SQL queries and refactoring outdated code. Worked closely with product owners in an Agile/Scrum team to deliver bi-weekly releases. Contributed to early-stage AI automation tools for internal operations.

Designed and optimized relational database structures to support large-scale enterprise applications used across Verizon’s internal platforms. Developed complex SQL queries, stored procedures, triggers, and views to streamline data processing and improve application performance. Conducted in-depth query optimization and indexing strategies, reducing execution time and improving overall system responsiveness. Created data models and schema designs that supported new application features, ensuring scalability, stability, and maintainability. Collaborated with backend and API teams to integrate database logic into microservices and internal tools. Implemented ETL workflows to clean, transform, and load large data sets for reporting, analytics, and operational use. Performed data integrity checks, database migrations, and version control of schema updates across multiple environments. Supported production environments by diagnosing database-related incidents and monitoring performance me

Designed and provisioned cloud infrastructure using Terraform, enabling reproducible environments and reducing manual configuration errors. Configured and optimized CDNs (CloudFront/FASTLY) to improve global content delivery, reduce latency, and enhance website performance. Deployed and managed AWS services including EC2, S3, Lambda, API Gateway, CloudFront, and RDS to support scalable, production-ready web applications. Created automated CI/CD pipelines using GitHub Actions, integrating linting, testing, build steps, and multi-environment deployments. Implemented multi-language localization for websites/apps using i18n frameworks, improving accessibility for global audiences. Set up and analyzed A/B tests (feature variants, UI changes, funnels) using tools such as Optimizely or Google Optimize. Collaborated closely with design teams using Figma, translating prototypes and design systems into pixel-perfect, responsive front-end components. Built and maintained interactive front-end fea