Flexible support across generative AI adoption, technical consulting, architecture, implementation, and code and security reviews.
Early-stage questions are welcome, in Japanese or English. In-person meetings are available in Tokyo.
I help small and midsize businesses and development teams plan practical generative AI adoption, select tools, run proofs of concept, and establish internal security and usage guidelines. Support can also include system design, implementation, code reviews, and ongoing technical advisory.
I adapt global software products for Japanese enterprises, covering local business, security, and operational requirements, integration design, and implementation.
Technical articles, books, talks, training, and YouTube partnerships focused on AI development, security, and open source.
Direct support from pdfme's creator for fit assessment, integration architecture, templates, plugins, and operations.
pdfme — An open-source PDF generation library built with TypeScript. GitHub 4.7K stars (as of July 2026) and npm 464K weekly downloads across five core packages (as of July 2026).
labelmake.jp — A PDF label creation service for address labels and barcodes.
YouTube @kyohei_dev (10.8K subscribers as of July 2026), covering security, AI development tools, open source, and engineering careers.
Sponsored work includes CodeRabbit, NearStream, Hostinger, and Tech-Go.
Organizer of Sancha.dev, an engineering community in the Sangenjaya area of Tokyo.
Open-Source Developer / Developer Advocate. I help companies solve technical challenges at a global technology company, following years of building and launching web products. I also build pdfme, an open-source PDF generation library.
I write, speak, and create videos about software development and security in the AI era, guided by the belief that developers should own the security of their code.
February 2023 – Present
Developer Advocate / Solution Engineer
Technical consulting and problem-solving across the Wix platform, centered on Wix Developers.
January 2021 – January 2023
Software Engineer
Developed the project management product Backlog.
August 2018 – January 2021
Software Engineer
Launched and developed the gig-work matching platform Sharefull.
April 2016 – August 2018
Software Engineer
Developed the HR management system HITO-Link.
Tell us what you are trying to achieve and where things stand today. We will reply with availability and a suggested next step.