Hi, I'm Kenta Yamamoto, a senior software developer based in Tokyo with a proven track record in building scalable web apps using React, TypeScript, Node.js, and modern web technologies. I thrive in collaborative environments and enjoy solving complex problems, continuously learning new technologies, and contributing to innovative projects that push the boundaries of what's possible in full-stack development.

Kenta Yamamoto

Hi, I'm Kenta Yamamoto, a senior software developer based in Tokyo with a proven track record in building scalable web apps using React, TypeScript, Node.js, and modern web technologies. I thrive in collaborative environments and enjoy solving complex problems, continuously learning new technologies, and contributing to innovative projects that push the boundaries of what's possible in full-stack development.

Available to hire

Hi, I’m Kenta Yamamoto, a senior software developer based in Tokyo with a proven track record in building scalable web apps using React, TypeScript, Node.js, and modern web technologies.

I thrive in collaborative environments and enjoy solving complex problems, continuously learning new technologies, and contributing to innovative projects that push the boundaries of what’s possible in full-stack development.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Senior Software Engineer at Verizon Communications Inc
February 1, 2021 - January 1, 2022
Led development of mobile applications for iOS and Android using native languages and Flutter. Designed and implemented responsive web applications using HTML, CSS, JavaScript, and Node.js. Built reusable components and modules, improving application performance and maintainability. Collaborated with cross-functional teams to gather requirements and deliver product features. Created technical documentation including architecture diagrams, API references, and user manuals. Contributed to Linux server setup, deployment, and basic system maintenance. Presented technical updates and project progress to stakeholders.
Software Engineer at AXA Insurance
April 1, 2023 - November 1, 2023
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.
Senior Software Engineer at Network Solutions
April 1, 2020 - January 1, 2022
Built and managed a high-quality outbound pipeline targeting 300+ TPA prospects; conducted in-depth research to identify accurate contacts and organizational structures; identified and verified key decision-makers across Marketing, Client Experience, Operations, and Executive leadership, enriching CRM data to support precise outreach. Executed personalized outreach campaigns via email, phone, and LinkedIn, tailoring messaging to each prospect's needs, pain points, and competitive landscape. Consistently generated 5+ qualified meetings per week, contributing to top-of-funnel growth and enabling Account Executives to focus on presenting and closing deals. Maintained an 80%+ meeting show rate through disciplined follow-up and calendar management. Qualified leads by assessing fit, interest level, buying intent, and readiness, ensuring only high-value prospects were passed to the AE. Documented all outreach activity, engagement metrics, and qualification notes in the CRM (Salesforce/HubSpot
Software Developer at MarketJoy
July 1, 2021 - November 1, 2021
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
Senior Software Development Engineer at Verizon.com
January 1, 2023 - August 1, 2023
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

Education

Bachelor of Science at Nagoya University
January 11, 2030 - December 6, 2025
Bachelor of Science at Nagoya University
April 1, 2010 - July 1, 2014
Bachelor of Science in Computer Science (B.S. CS) at University of Tokyo
March 1, 2010 - August 1, 2014

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Financial Services, Telecommunications, Education, Computers & Electronics, Media & Entertainment