Hello. I’m Satoshi Ohmori, CEO of NAZACS Inc. Since discovering Ruby on Rails in 2011, I have supported web service development for both B2B and B2C markets for over 13 years. I specialize in organizing the technical challenges faced during application growth and driving improvements from both product and team perspectives.
Key Areas of Expertise
- Web service development with Ruby on Rails (2011–present) I have been continuously involved in production work since late 2012, accumulating expertise from Rails 3 through the current version. I have independently developed and operated 3 services including in-house products, and have been highly regarded for identifying and resolving performance bottlenecks.
- Large-scale product operations with Ruby (2011–present) I have used Ruby since the 1.8 series through the current version, with extensive experience in major version migrations and performance tuning. I can provide technical support that encompasses business process design and team building.
- Modern frontend development I have production experience with TypeScript, Vue.js, React, and Angular, along with extensive SSR/SSG experience using Next.js and Nuxt.js. I leverage modern build tools such as Vite and Bun. I have led teams in development combining Rails with SPAs, and have successfully delivered multiple projects from greenfield development to incremental adoption into existing applications.
- Building remote work environments I started working remotely in 2014 and have been fully remote since 2016. I have a track record in establishing collaboration environments for distributed team members and implementing document-driven operational improvements.
Specialties
Rails × JavaScript Frameworks
I specialize in dynamic UI development combining Rails with JavaScript frameworks. With experience in both SPA and hybrid configurations using Vue, Angular, and React, I can propose optimal architecture choices tailored to your requirements.
Performance Tuning
I drive response improvement and front-end performance optimization—essential during product growth—while visualizing progress through metrics like PageSpeed Insights and GTmetrix. I can handle everything from prioritizing initiatives to implementation and building continuous monitoring systems. I have multiple case studies where SEO and LCP improvements contributed to revenue growth and UX enhancement.
GitHub Activity
I actively contribute to the following OSS projects:
- RuboCop
- Kaminari
- DatabaseRewinder
- Oh My Zsh
- Homebrew / Homebrew Cask
- And many more