Yuhi Sakaguchi

Software Engineer

Software Engineer in Japan with expertise in web development and modern technologies. Values teamwork and loves creative work.

Work

MoneyForward

Software Engineer

Developed accounting applications for mid-sized enterprises using modern technologies. Worked on both frontend and backend implementation, collaborating with Product Managers to define specifications and improve user experience. Performed performance optimizations to handle large-scale data using Ruby and Golang, languages I had not used before joining the company.

  • Developing APIs using Ruby on Rails and Golang

  • Performance optimization and system improvements

  • Contributing to large-scale financial technology product development, handling enterprise accounting data and implementing performance optimizations for high-volume transaction processing

  • Collaborating in cross-functional teams of dozens of engineers using Scrum methodology for agile product development

  • Actively leveraging generative AI tools like Claude Code and Cursor for enhanced productivity

  • Responding to customer inquiries to improve user experience

Freelance

Software Engineer

Based on web development, worked on anything software-related including IoT devices and iOS applications, actively taking on projects in various fields to build a solid foundation as a software engineer.

  • Web frontend development and iOS application development

  • Developed bowling pin detection software using Raspberry Pi and camera systems

  • End-to-end involvement from system design to implementation and operations

Education

Kyoto University

Computer Science

Master's Degree

Kyoto University

Science

Bachelor's Degree

Skills

Programming Languages

  • JavaScript
  • TypeScript
  • Python
  • Ruby
  • Go

Web Technologies

  • React.js
  • Next.js
  • Node.js
  • Ruby on Rails
  • HTML5
  • CSS3
  • Tailwind CSS

Databases

  • PostgreSQL
  • MySQL
  • MongoDB
  • Redis

Cloud & DevOps

  • AWS
  • Docker
  • Kubernetes
  • GitHub Actions

Development Tools

  • Claude Code
  • Cursor
  • Git

Languages

Japanese

Native

English

Professional working proficiency