01
Web 開発
Web Development
Production-grade websites and web apps in Next.js, React and TypeScript. Fast, accessible, and maintained long after launch.
Next.jsReactTypeScriptTailwind
Osaka · 大澤商事株式会社
Five IT services — web, mobile, AI deployment, server operations and network engineering. Alongside, an operating portfolio of solar and wind assets across three prefectures. One partner, end to end.
67+
Sites shipped
6 yrs
In the craft
2
Solar fields
1
Wind site
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私たちについて/ About
AnOsakacompanyengineeringandoperatingthesystemsthatbusinessesrelyon—digitalandphysical.
Build
End-to-end delivery across web, mobile, AI, server and network — designed once, maintained continuously.
Operate
From production servers to renewable-energy sites in three prefectures, we run what we build.
Stand behind
Multi-year support contracts, transparent reporting, and accountability that doesn't end at handover.
大澤 IT/ Practice 01
Five things,
done properly.
Scroll to advance
02
アプリ開発
App Development
Native iOS, Android and cross-platform mobile apps. Shipped to the App Store and Play Store, kept in sync with every OS update.
React NativeSwiftKotlinExpo
03
AI 導入
AI Deployment
On-premise and cloud LLM deployment — Ollama, vLLM and fine-tuned open-source models on your own hardware. Private, fast, fully under your control.
OllamavLLMLangChainPyTorch
04
サーバー保守
Server Maintenance
Linux servers, Docker and Kubernetes — monitoring, patching, backups, and 24/7 incident response so your team stays focused on the product.
LinuxDockerKubernetesGrafana
05
ネットワーク設計
Network Engineering
Office networks, site-to-site VPNs, firewalls and multi-branch routing. Designed for redundancy and speed, audited for security.
CiscopfSenseWireGuardZabbix
In memoriam
Ada Lovelace
1815 — 1852 · the first programmer
大澤 IT/ Practice 01
Five things,
done properly.
01
Web 開発
Web Development
Production-grade websites and web apps in Next.js, React and TypeScript. Fast, accessible, and maintained long after launch.
Next.jsReactTypeScriptTailwind
02
アプリ開発
App Development
Native iOS, Android and cross-platform mobile apps. Shipped to the App Store and Play Store, kept in sync with every OS update.
React NativeSwiftKotlinExpo
03
AI 導入
AI Deployment
On-premise and cloud LLM deployment — Ollama, vLLM and fine-tuned open-source models on your own hardware. Private, fast, fully under your control.
OllamavLLMLangChainPyTorch
04
サーバー保守
Server Maintenance
Linux servers, Docker and Kubernetes — monitoring, patching, backups, and 24/7 incident response so your team stays focused on the product.
LinuxDockerKubernetesGrafana
05
ネットワーク設計
Network Engineering
Office networks, site-to-site VPNs, firewalls and multi-branch routing. Designed for redundancy and speed, audited for security.
CiscopfSenseWireGuardZabbix
In memoriam
Ada Lovelace
1815 — 1852 · the first programmer
再生可能エネルギー/ Practice 02
Quietly powering
the grid on the side.
The studio funds a second life. Across two prefectures we operate a small portfolio of solar arrays and a single coastal wind site — maintenance, monitoring, and patient growth. The web work pays for the panels. The panels pay for the next ten years.
Solar capacity
1.8 MW
across 2 fields in Tochigi & Chiba
Wind capacity
600 kW
single coastal site, Ibaraki
Annual yield
~2.6 GWh
fed to the national grid
Households
≈ 720
powered for a full year
仕事の流れ/ Process
Four steps,
eight to twelve weeks.
01
聞く
Listen
Two weeks of conversations, audits and reading. We learn the business before we draw a single rectangle.
02
形作る
Shape
Narrative, structure, art direction. We argue about typography and image style until the foundation is honest.
03
作る
Build
Design and engineering happen in the same week. Motion is sketched in code, not in After Effects.
04
育てる
Tend
We keep your site fast and well-maintained for the next year. Same team. No handoff to someone else.
お問い合わせ/ Get in touch
Have a project
in mind?
Email
team@oo-sawa.co.jpStudio
〒541-0051\n大阪府大阪市中央区南船場 2-XX-X
Chuo-ku, Osaka, Japan
Hours
月 — 金 / 10:00 — 19:00 JST
We open three project slots a year. Tell us about the brief, the timeline, and whoever it's for — we reply within two working days.