👋 Hello Dev.to!
Hi, I'm Umitomo 🐠 from Japan 🇯🇵
I work as an in-house systems engineer, mainly focusing on IT infrastructure and security.
💼 What I do
In my daily work, I handle IT infrastructure and security operations.
Outside of work, I enjoy building things as a hobby and have been learning:
- SwiftUI (iOS development)
- Web development (Remix, Cloudflare)
- Cybersecurity (TryHackMe)
🚀 What I'm building
🌐 Web Development
I built a personal blog using Remix + Cloudflare + microCMS.
Since I plan to publish articles on Dev.to, I'm thinking about turning it into a portfolio site using React Router v7.
📱 iOS Development
I'm currently learning SwiftUI through tutorials.
I'd love to build apps that I can enjoy with my kids.
🎯 Why I'm here
I chose Dev.to because:
- I want to challenge myself to write in English
- I like the culture where it's okay to share not only tutorials but also personal learning journeys
I feel it's a great place to grow as a developer while sharing my progress.
✍️ What I’ll write about
- My journey from infrastructure to development
- Development logs and technical notes
- Security learning and experiments
🌱 My goal
I'm starting small, but I want to stay consistent and keep learning step by step.
🙌 Nice to meet you!
Feel free to connect with me!








