Takano Masanori

Masanori Takano

I hold CISSP certification and serve as CTO at NEARIZE. My independent work includes security consulting and ongoing advisory, alongside app, web, and AI development.

Security consulting, from priorities to implementation.

I combine the systematic knowledge behind CISSP with CTO experience and hands-on work across apps, frontend, backend, and infrastructure. I help set priorities around your business goals and budget, then support implementation through focused improvements or ongoing advisory.
Explore security consultingSee my work
SECURITY CONSULTINGAn independent service by Masanori Takano

CISSP / CTO / Hands-on engineer

Security advice.
Hands-on implementation.

For small businesses and web development teams

I apply CISSP knowledge and CTO experience across apps, frontend, backend, and infrastructure. We can work on a specific improvement or an ongoing advisory basis, with your business goals, budget, and development priorities in view.

Explore security services

Choose your first task for AI

About 3 minutes · No sign-up · Japanese

AI workflow scorecard

Answer six questions to score a task out of 100 and see what to prepare before trying AI.

Try the free scorecard (Japanese)Practical guide · No sign-up · Japanese

Five criteria for choosing your first task

See worked examples for reports and customer inquiries, plus a plan for testing AI over 30 days.

Read the guide (Japanese)
NEW SERVICEAI TRAINING FOR BUSINESSOnline across Japan

Generative AI training for teams

AI training built around
your team's work.

Bring your emails, meeting notes, proposals, and internal policies. Your team practices with its own tasks, guided by a working CTO and engineer.

  • Practice with your own tasks
  • Decide what data is safe to enter
  • Discuss a follow-up pilot project
Explore AI training (Japanese)

Engineering consulting

Hands-on support for Rails upgrades, mobile app modernization, and sign-up and payment flows.

Rails upgradesUpgrade legacy Rails applications in stages, including gems, CI, tests, and deprecated APIs.Details in Japanese →Mobile app modernizationMigrate legacy iOS and Android screens to SwiftUI and Jetpack Compose, one step at a time.Details in Japanese →Sign-up and payment flowsFind friction in sign-up, purchase, and payment flows, then address one issue in 30 days. Published case studies cover Amazon Pay and PayPay integration.Details in Japanese →
Zenn

What's New

Recent writing on engineering and AI, published in Japanese.

All articles (Japanese)

Technical capabilities 🧑‍💻

Mobile app development📱

SwiftReact Native

Frontend development💻

ReactNext.jsRemix

Backend development

railsnodejs

Infrastructure

awsdynamodbecsfirebase

Other expertise

threejscisspbluetooth
Awards 🏆
MAMORIO, which I helped develop, won a Special Prize at the Ruby biz Grand Prix 2019. The recipient was MAMORIO Inc., the company’s name at the time.
Ruby biz Grand Prix 2019 award results (Japanese)Masanori Takano at the Ruby biz Grand Prix 2019 ceremony (Japanese award page)
Recorded when I was 10 kg heavier 😅

Projects

MAMORIO

mamorioTag
MAMORIO pairs Bluetooth tags with a smartphone app to help people keep track of their belongings.
The app alerts users when they leave an item behind. If it is lost, other users passing nearby can help report its location, while AR helps with searching at close range. The tag is designed to fit discreetly in a wallet. More than 500,000 units have been sold in Japan.
Visit website
Technologies
swiftrailsawskotlindynamodbpostgresqlibeacon

MAMORIO Biz

mamorio_biz
MAMORIO Biz uses Bluetooth tags and sensors to track company assets. Sensors installed in offices or factories monitor tagged items around the clock. Administrators can also manage access permissions for individual users. Event-based notifications flag items that have not been detected for a set period or have passed a specified location.
Visit website
Technologies
ibeaconreactjsnodejs

Rokudenashiko Museum

6d745 museum
An interactive 3D museum featuring work by Japanese feminist artist Rokudenashiko. Visitors can explore a gallery built with Three.js, talk to AI characters, comment on artworks, and play a trial game based on her experience of incarceration. The museum also includes an online store for art and merchandise, with PayPal checkout.
Visit website
Technologies
chatgptnextjsfirebasethreejspaypal

AInalyze

AInalyze overview
Explore large codebases with AI
AInalyze reviews a repository and summarizes its structure and potential improvements, helping you decide where to investigate next.
It connects to GitHub, supports multiple AI models, and works from a smartphone.
AInalyze mobile interface
Start a free trial
Technologies
chatgptremix

CodingX

CodingX command deck session detail
AI coding agents running in the cloud
CodingX connects AI agents with GitHub, Slack, and AWS. It creates a cloud development environment for each task, loads the repository, and runs a coding agent to implement changes.
Tasks can be sent from a computer, smartphone, or Slack. Each environment can be discarded after use, keeping work separated between tasks.
An API also supports recurring tasks triggered by Cron or other schedulers.
Technologies
anthropicgithubawsecsnodejsslack

Contact

Tell me what you are working on and where you need help. You do not need a finished brief. Use the form below or send me an email to discuss security, ongoing advisory, or development work.
Send an inquiry

Opens the English Google Form in a new tab.

Email metakamasa1222@gmail.com