Founder-led · AI-driven development
Founder-led engineering
for new products.
System Solutions Inc. is a custom software studio in Hamamatsucho, Minato-ku, Tokyo. We specialize in launching new web services and business systems, with the founder-engineer working directly with you from the planning stage. AI-driven development lets us deliver custom code at no-code prices and speed, and we cover AI agents, cloud infrastructure (AWS / Azure / GCP), and ongoing maintenance as one service.
Why us
Why clients choose System Solutions
We start from your business problem and combine AI, cloud, and applications in the form that actually solves it.
AI, cloud, and apps designed as one
From the cloud foundation that runs AI agents safely to business apps and operations — delivered as a working whole, not isolated parts.
Expertise we can teach
Our CEO has taught AWS and AI to more than 6,000 students on Udemy and personally handles requirements and design, explaining every decision.
Start small, ship for real
Validate impact with a 1–2 month PoC, then go to production and operations together. NDAs and no-training AI configurations are designed in from day one.
Services
What we do
AI agents, cloud foundations, web systems, consulting, and training — engage us for one piece or the whole.
AI Agent Development & Generative AI
From experimenting to running AI in production.
We design, build, and operate AI agents, automation systems, and RAG (internal knowledge search) that embed generative AI such as Claude and OpenAI models into real business workflows.
Learn moreCloud Infrastructure
AWS / Azure / GCP — as code, and secure by default.
We design, build, and operate cloud foundations on AWS / Azure / GCP using Infrastructure as Code (Terraform) and CI/CD as standard, optimizing for availability, security, and cost.
Learn moreWeb & Business System Development
Built from scratch around your operations.
End-to-end development of web applications and business systems (accounting, reservations, CRM, and more) with React / Next.js / Laravel / Python, from requirements through maintenance.
Learn moreIT Consulting & DX
A partner who understands the technology.
Hands-on consulting — IT strategy, DX programs, PMO support, and system assessments — delivered by engineers who can build what they recommend.
Learn moreAI Training & Claude Code Enablement
Taught by an instructor with 6,000+ students, tailored to your team.
Corporate training, seminars, and enablement on Claude Code, AI coding tools, and generative AI at work, delivered by our CEO — a Udemy instructor with more than 6,000 students.
Learn moreNot sure which fits?
Tell us the problem and we will propose the right combination. The first conversation is free.
Get in touch
Talks & Media
Talks and media
We share hands-on knowledge of AI agents, cloud, and Claude Code through talks, courses, and media appearances.
- Talk
AI BRIDGE KUMAMOTO 2026 — Bringing the power of AI to Kumamoto
「Running AI agents in cloud environments」
AI BRIDGE KUMAMOTO 2026
CEO Motoki Arai spoke at the Kumamoto-born AI event on how to run AI agents on cloud environments such as AWS: architecture, benefits, and security and operational considerations.
- Media
A CPA is stunned watching AI produce a quotation in seconds
YouTube channel “Inochan-sensei, the CPA who doesn't hold back” (134K subscribers)
Our CEO appeared on CPA YouTuber Yoshiro Inoshita's channel (134K subscribers), demonstrating AI-generated quotations and discussing cost reduction in software development and subsidy-backed system projects.
- Talk
Growing Claude Code into Your Own — Introduction to Agent Skills
MIRAICHI
Explained how Agent Skills work (folders + Markdown), how placement affects scope, designing name / description, and security considerations when importing external Skills.
Founder
An engineer who moves businesses forward with cloud and AI agents
CEO & Representative Director Motoki Arai
Motoki Arai is the CEO of System Solutions Inc. He is an engineer specializing in cloud infrastructure (AWS / Azure / GCP) and generative-AI / AI-agent adoption, and also serves as head of development at AITech, a construction-AI startup born from the University of Tokyo's Matsuo Lab. He is a Udemy instructor with 6,000+ students, a speaker at AI BRIDGE KUMAMOTO 2026, and a guest on a YouTube channel with 134,000 subscribers.
- 6,000+
- Udemy students
- 7
- Udemy courses
- 4.7
- Average rating
- 5+
- Industries served
News
News
- Talks & events
CEO Motoki Arai spoke at AI BRIDGE KUMAMOTO 2026 on running AI agents in the cloud
- Media
Our CEO appeared on the 134K-subscriber YouTube channel of CPA “Inochan-sensei”
- Talks & events
CEO Motoki Arai spoke at the MIRAICHI seminar “Introduction to Agent Skills”
- Press release
CEO Motoki Arai launched a new Udemy course, “Claude Code Essentials”
FAQ
Frequently asked questions
What does System Solutions Inc. do?
A Tokyo-based (Hamamatsucho, Minato-ku) software company founded in March 2026 that provides AI agent development, cloud infrastructure on AWS / Azure / GCP, web and business-system development, IT consulting, and AI training. CEO Motoki Arai is a Udemy instructor with more than 6,000 students.
Can AI agents be run safely in the cloud?
Yes. We build agent runtimes on AWS and other clouds with credential / IAM management, isolated execution, audit logs, and cost visibility. Running agents in the cloud instead of on laptops enables team sharing, privilege separation, always-on operation, and scale — the topic of our AI BRIDGE KUMAMOTO 2026 talk.
How do you price your services?
Typical ranges (excl. tax): new web service / MVP ¥1.5M–3M (6–8 weeks); business systems ¥3M–8M (2–4 months); AI agents, RAG, and workflow automation ¥1M–3M; cloud infrastructure on AWS etc. with IaC and CI/CD ¥1M–3M; maintenance from ¥50K/month; fractional CTO / advisory from ¥200K/month. AI-driven development lets us deliver custom code at no-code price levels. Development is fixed-price after requirements; advisory and PMO are monthly retainers. Initial consultation and quotes are free.
Do you work remotely and with clients outside Tokyo?
Yes, nationwide. Meetings are online by default (Google Meet / Zoom / Slack), with on-site visits available in the Tokyo area. We also speak at regional events such as in Kumamoto, and welcome overseas engagements.
Tell us about your challenge.
AI agents, cloud, or software — reach out by form or email. We work remotely with clients across Japan.
Initial consultation and quotes are free
Hamamatsucho Diamond Bldg. 2F, 2-2-15 Hamamatsucho, Minato-ku, Tokyo 105-0013, Japan