# Naoyuki Yamamoto - Senior Full Stack Developer | React, AWS, LLM
Source: https://hello.cv/naoyuki
Düsseldorf

## Links
- Email
- Phone

## About
Highly accomplished Senior Full Stack Developer with 7 years of experience specializing in architecting and deploying scalable web products using React, Node.js, Python, AWS, and LLMs. Expertly delivered revenue-raising e-commerce and payment platforms through agile, AI-driven development, consistently focusing on tangible business value. Proven ability to lead complex migrations, optimize performance, and integrate advanced AI solutions to drive significant user engagement and conversion.

## Work
### Senior Full Stack Developer | Miva Labs
Led the design and development of scalable e-commerce platforms, migrating monolithic architectures to microservices and integrating advanced AI solutions to enhance user experience and conversion.
- Designed and developed a scalable e-commerce platform using React and Node.js microservices, ensuring high performance and reliability for critical business operations.
- Implemented an AI scoring engine that accurately predicts shopper preferences on a 1-100% scale, significantly enhancing personalized product recommendations and user engagement.
- Migrated a monolithic backend to a robust microservices architecture, deploying several microservices as serverless Lambda functions to ensure consistency and high availability for high-volume requests.
- Developed and deployed an AI-powered search query rewriting system, leading to improved search accuracy and conversion rates for the e-commerce platform.
- Managed and deployed critical infrastructure on AWS, implementing auto-scaling and monitoring solutions to ensure optimal performance and uptime.
### Full Stack Developer | IT Force
Engineered and deployed a high-traffic, end-to-end e-commerce platform with Python and Next.js, integrating AI-powered features and optimizing performance for a device-agnostic user experience.
- Engineered a high-traffic, end-to-end e-commerce platform using Python and Next.js, from initial architecture through production deployment, ensuring a resilient and device-agnostic user experience.
- Implemented an AI-powered recommendation system utilizing LLMs to generate personalized product suggestions, significantly enhancing search relevance and user engagement.
- Utilized LLMs for review summarization, generating concise pros/cons from thousands of user reviews to improve product understanding and decision-making.
- Optimized platform performance by implementing Redis caching, CDN (CloudFront), and advanced database query optimization, resulting in significant speed improvements.
- Built secure authentication and authorization systems using JWT, OAuth, and AWS Cognito, establishing robust role-based access for both users and administrators.
### Software Developer | CeleraOne
Contributed to core application development, collaborating on database design, query optimization, and code quality initiatives to enhance application responsiveness and streamline development workflows.
- Collaborated effectively with cross-functional teams using GitHub for version control, performing pull requests and code reviews to maintain high code quality and streamline development processes.
- Assisted in optimizing database design and query performance with Postgres, significantly enhancing application responsiveness and reducing load times for improved user experience.

## Education
### Nagoya Institute of Technology | Computer Science

## Skills
### Languages & Frameworks
- JavaScript
- TypeScript
- Python
- React.js
- Next.js
- Node.js
- Django
- FastAPI
### DevOps & Tools
- AWS
- Docker
- Kubernetes
- Vercel
- OpenAI
- Anthropic
- LangChain
### Testing
- Jest
- Cypress
- Postman

## Source
Read this profile on Hello.cv: https://hello.cv/naoyuki
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